(cid:22)(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 (cid:1) Complete PWM Power Control Circuitry D, DB, N, NS, PW, OR J PACKAGE (cid:1) (TOP VIEW) Completely Synchronized Operation (cid:1) Internal Undervoltage Lockout Protection (cid:1) CT 1 16 REF Wide Supply Voltage Range RT 2 15 SCP (cid:1) Internal Short-Circuit Protection ERROR 1IN+ 3 14 2IN+ ERROR (cid:1) Oscillator Frequency...500 kHz Max AMPLIFIER 1 1IN– 4 13 2IN– AMPLIFIER 2 (cid:1) Variable Dead Time Provides Control Over 1FEEDBACK 5 12 2FEEDBACK Total Range 1DTC 6 11 2DTC (cid:1) 1OUT 7 10 2OUT Internal Regulator Provides a Stable 2.5-V GND 8 9 VCC Reference Supply (cid:1) Available in Q-Temp Automotive FK PACKAGE HighRel Automotive Applications (TOP VIEW) Configuration Control / Print Support Qualification to Automotive Standards F P T T C E C R C N R S description 3 2 1 20 19 1IN+ 4 18 2IN+ The TL1451A incorporates on a single monolithic chip all the functions required in the construction 1IN– 5 17 2IN– of two pulse-width-modulation (PWM) control NC 6 16 NC circuits. Designed primarily for power-supply 1FEEDBACK 7 15 2FEEDBACK control, the TL1451A contains an on-chip 2.5-V IDTC 8 14 2DTC regulator, two error amplifiers, an adjustable 9 10 11 12 13 oscillator, two dead-time comparators, undervol- toaugtpeu lto tcrkaonusti sctoirrc uciirtrcyu, itasn.d dual common-emitter OUT GND NC V CCOUT 1 2 The uncommitted output transistors provide common-emitter output capability for each controller. The internal amplifiers exhibit a common-mode voltage range from 1.04 V to 1.45 V. The dead-time control (DTC) comparator has no offset unless externally altered and can provide 0% to 100% dead time. The on-chip oscillator can be operated by terminating RT and CT. During low V conditions, the undervoltage CC lockout control circuit feature locks the outputs off until the internal circuitry is operational. The TL1451AC is characterized for operation from –20°C to 85°C. The TL1451AQ is characterized for operation from –40°C to 125°C. The TL1451AM is characterized for operation from –55°C to 125°C. AVAILABLE OPTIONS PACKAGED DEVICES SMALL SMALL SMALL CHIP CERAMIC TA PLASTIC DIP TSSOP OUTLINE OUTLINE (N) OUTLINE (PW)† CARRIER DIP (D) (DB)† (NS) (FK) (J) –20°C to 85°C TL1451ACD TL1451ACDB TL1451ACN TL1451ACNS TL1451ACPW — — –40°C to 125°C TL1451AQD — — — — — — –55°C to 125°C — — — — — TL1451AMFK TL1451AMJ †The DB and PW packages are only available left-end taped and reeled (add LE suffix, i.e., TL1451ACPWLE). Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet. (cid:10)(cid:21)(cid:18)(cid:7)(cid:8)(cid:20)(cid:1)(cid:15)(cid:18)(cid:19) (cid:7)(cid:6)(cid:1)(cid:6) (cid:23)(cid:24)(cid:25)(cid:26)(cid:27)(cid:28)(cid:29)(cid:30)(cid:23)(cid:26)(cid:24) (cid:23)(cid:31) !(cid:27)(cid:27)"(cid:24)(cid:30) (cid:29)(cid:31) (cid:26)(cid:25) #!$%(cid:23) (cid:29)(cid:30)(cid:23)(cid:26)(cid:24) &(cid:29)(cid:30)"’ Copyright  1999, Texas Instruments Incorporated (cid:10)(cid:27)(cid:26)&! (cid:30)(cid:31) (cid:26)(cid:24)(cid:25)(cid:26)(cid:27)(cid:28) (cid:30)(cid:26) (cid:31)#" (cid:23)(cid:25)(cid:23) (cid:29)(cid:30)(cid:23)(cid:26)(cid:24)(cid:31) #"(cid:27) (cid:30)(" (cid:30)"(cid:27)(cid:28)(cid:31) (cid:26)(cid:25) (cid:1)")(cid:29)(cid:31) (cid:15)(cid:24)(cid:31)(cid:30)(cid:27)!(cid:28)"(cid:24)(cid:30)(cid:31) (cid:18)(cid:24) #(cid:27)(cid:26)&! (cid:30)(cid:31) (cid:26)(cid:28)#%(cid:23)(cid:29)(cid:24)(cid:30) (cid:30)(cid:26) (cid:17)(cid:15)(cid:2)(cid:13)(cid:10)(cid:21)-(cid:13)./(cid:5).(cid:5)0 (cid:29)%% #(cid:29)(cid:27)(cid:29)(cid:28)"(cid:30)"(cid:27)(cid:31) (cid:29)(cid:27)" (cid:30)"(cid:31)(cid:30)"& (cid:31)(cid:30)(cid:29)(cid:24)&(cid:29)(cid:27)& *(cid:29)(cid:27)(cid:27)(cid:29)(cid:24)(cid:30)+’ (cid:10)(cid:27)(cid:26)&! (cid:30)(cid:23)(cid:26)(cid:24) #(cid:27)(cid:26) "(cid:31)(cid:31)(cid:23)(cid:24), &(cid:26)"(cid:31) (cid:24)(cid:26)(cid:30) (cid:24)" "(cid:31)(cid:31)(cid:29)(cid:27)(cid:23)%+ (cid:23)(cid:24) %!&" !(cid:24)%"(cid:31)(cid:31) (cid:26)(cid:30)("(cid:27)*(cid:23)(cid:31)" (cid:24)(cid:26)(cid:30)"&’ (cid:18)(cid:24) (cid:29)%% (cid:26)(cid:30)("(cid:27) #(cid:27)(cid:26)&! (cid:30)(cid:31)0 #(cid:27)(cid:26)&! (cid:30)(cid:23)(cid:26)(cid:24) (cid:30)"(cid:31)(cid:30)(cid:23)(cid:24), (cid:26)(cid:25) (cid:29)%% #(cid:29)(cid:27)(cid:29)(cid:28)"(cid:30)"(cid:27)(cid:31)’ #(cid:27)(cid:26) "(cid:31)(cid:31)(cid:23)(cid:24), &(cid:26)"(cid:31) (cid:24)(cid:26)(cid:30) (cid:24)" "(cid:31)(cid:31)(cid:29)(cid:27)(cid:23)%+ (cid:23)(cid:24) %!&" (cid:30)"(cid:31)(cid:30)(cid:23)(cid:24), (cid:26)(cid:25) (cid:29)%% #(cid:29)(cid:27)(cid:29)(cid:28)"(cid:30)"(cid:27)(cid:31)’ www.ti.com 1

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:22) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 functional block diagram VCC RT CT 11 9 2 1 2 DTC 14 10 ERROR IN+ + 2 OUTPUT AMPLIFIER 2 IN– 13 – 12 2 FEEDBACK Oscillator PWM 1/2 Vref COMP 5 1 FEEDBACK Reference 16 REF 12 kΩ Voltage 15 SCP 170 kΩ UVLO R R S 3 ERROR IN+ + AMPLIFIER 1 IN– 4 – 71 OUTPUT PWM COMP 6 1 DTC 8 GND COMPONENT COUNT Resistors 65 Capacitors 8 Transistors 105 JFETs 18 2 www.ti.com

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 absolute maximum ratings over operating free-air temperature range† Supply voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 V CC Amplifier input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 V I Collector output voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 V O Collector output current, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 mA O Continuous power total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, T C suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20°C to 85°C A Q suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 125°C M suffix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C Storage temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C stg Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C †Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. DISSIPATION RATING TABLE TA ≤ 25°C DERATING FACTOR TA = 70°C TA = 85°C TA = 125°C PACKAGE POWER RATING ABOVE TA = 25°C POWER RATING POWER RATING POWER RATING D 1088 mW 8.7 mW/°C 696 mW 566 mW 218 mW DB 775 mW 6.2 mW/°C 496 mW 403 mW — N 1000 mW 8.0 mW/°C 640 mW 520 mW — NS 500 mW 4.0 mW/°C 320 mW 260 mW — PW 838 mW 6.7 mW/°C 536 mW 436 mW 168 mW FK 1375 mW 11.0 mW/°C 880 mW 715 mW 275 mW J 1375 mW 11.0 mW/°C 880 mW 715 mW 275 mW recommended operating conditions MIN MAX UNIT Supply voltage, VCC 3.6 50 V Amplifier input voltage, VI 1.05 1.45 V Collector output voltage, VO 50 V Collector output current, IO 20 mA Current into feedback terminal 45 µA Feedback resistor, RF 100 kΩ Timing capacitor, CT 150 15000 pF Timing resistor, RT 5.1 100 kΩ Oscillator frequency 1 500 kHz C suffix –20 85 Operatingg free-air temperature,, TAA Q suffix –40 125 °C M suffix –55 125 www.ti.com 3

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:22) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 electrical characteristics over recommended operating free-air temperature range, V = 6 V, CC f = 200 kHz (unless otherwise noted) reference section TL1451AC PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Output voltage (pin 16) IO = 1 mA 2.4 2.5 2.6 V TA = –20°C to 25°C –0.1% ±1% OOuttpputt voollttaaggee cchhaannggee wiitthh tteemmppeerraatturree TA = 25°C to 85°C –0.2% ±1% Input voltage regulation VCC = 3.6 V to 40 V 2 12.5 mV Output voltage regulation IO = 0.1 mA to 1 mA 1 7.5 mV Short-circuit output current VO = 0 3 10 30 mA †All typical values are at TA = 25°C. undervoltage lockout section TL1451AC PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Upper threshold voltage (VCC) 2.72 V Lower threshold voltage (VCC) 2.6 V IIOO((reff)) = 00.11 mmAA, TTAA = 2255°°CC Hysteresis (VCC) 80 120 mV Reset threshold voltage (VCC) 1.5 1.9 V †All typical values are at TA = 25°C. short-circuit protection control section TL1451AC PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Input threshold voltage (SCP) TA = 25°C 0.65 0.7 0.75 V Standby voltage (SCP) No pullup 140 185 230 mV Latched input voltage (SCP) No pullup 60 120 mV Input (source) current VI = 0.7 V, TA = 25°C –10 –15 –20 µA Comparator threshold voltage (FEEDBACK) 1.18 V †All typical values are at TA = 25°C. oscillator section TL1451C PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Frequency CT = 330 pF, RT = 10 kΩ 200 kHz Standard deviation of frequency CT = 330 pF, RT = 10 kΩ 10% Frequency change with voltage VCC = 3.6 V to 40 V 1% TA = –20°C to 25°C –0.4% ±2% FFrreeqquueennccyy cchhaannggee wwiitthh tteemmppeerraattuurree TA = 25°C to 85°C –0.2% ±2% †All typical values are at TA = 25°C. 4 www.ti.com

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 dead-time control section TL1451AC PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Input bias current (DTC) 1 µA Latch mode (source) current (DTC) TA = 25°C –80 –145 µA Latched input voltage (DTC) IO = 40 µA 2.3 V Zero duty cycle 2.05 2.25 IInnppuutt tthhrreesshhoolldd vvoollttaaggee aatt ff = 1100 kkHHzz ((DDTTCC)) VV Maximum duty cycle 1.2 1.45 †All typical values are at TA = 25°C. error-amplifier section TL1451AC PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Input offset voltage VO (FEEDBACK) = 1.25 V ±6 mV Input offset current VO (FEEDBACK) = 1.25 V ±100 nA Input bias current VO (FEEDBACK) = 1.25 V 160 500 nA 11..0055 CCoommmmoonn-mmooddee iinnpuutt vvoollttaaggee rraannggee VVCCCC == 33..66 VV ttoo 4400 VV ttoo VV 1.45 Open-loop voltage amplification RF = 200 kΩ 70 80 dB Unity-gain bandwidth 1.5 MHz Common-mode rejection ratio 60 80 dB Positive output voltage swing Vref–0.1 V Negative output voltage swing 1 V Output (sink) current (FEEDBACK) VID = –0.1 V, VO = 1.25 V 0.5 1.6 mA Output (source) current (FEEDBACK) VID = 0.1 V, VO = 1.25 V –45 –70 µA †All typical values are at TA = 25°C. output section TL1451AC PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Collector off-state current VO = 50 V 10 µA Output saturation voltage IO = 10 mA 1.2 2 V Short-circuit output current VO = 6 V 90 mA †All typical values are at TA = 25°C. pwm comparator section TL1451AC PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Zero duty cycle 2.05 2.25 IInnppuutt tthhrreesshhoolldd vvoollttaaggee aatt ff = 1100 kkHHzz ((FFEEEEDDBBAACCKK)) VV Maximum duty cycle 1.2 1.45 †All typical values are at TA = 25°C. total device TL1451AC PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Standby supply current Off-state 1.3 1.8 mA Average supply current RT = 10 kΩ 1.7 2.4 mA †All typical values are at TA = 25°C. www.ti.com 5

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:22) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 electrical characteristics over recommended operating free-air temperature range, V = 6 V, CC f = 200 kHz (unless otherwise noted) reference section TL1451AQ, TL1451AM PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX TA = 25°C 2.40 2.50 2.60 OOuttpputt voollttaaggee ((ppiinn 1166)) IIO = 11 mmAA TA = MIN and 125°C 2.35 2.46 2.65 VV Output voltage change with temperature –0.63% *±4% TA = 25°C 2.0 12.5 IInnpuutt vvoollttaaggee rreegguullaattiioonn VVCCCC = 33..66 VV ttoo 4400 VV TA = 125°C 0.7 15 mmVV TA = MIN 0.3 30 TA = 25°C 1.0 7.5 OOuuttpuutt vvoollttaaggee rreegguullaattiioonn IIOO = 00..11 mmAA ttoo 11 mmAA TA = 125°C 0.3 14 mmVV TA = MIN 0.3 20 Short-circuit output current VO = 0 3 10 30 mA *These parameters are not production tested. †All typical values are at TA = 25°C unless otherwise indicated. undervoltage lockout section TL1451AQ, TL1451AM PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX TA = 25°C 2.72 UUppeerr tthhrreesshhoolldd vvoollttaaggee ((VVCCCC)) TA = 125°C 1.70 VV TA = MIN 3.15 TA = 25°C 2.60 LLoowweerr tthhrreesshhoolldd vvoollttaaggee ((VVCCCC)) TA = 125°C 1.65 VV TA = MIN 3.09 TA = 25°C 80 120 HHyysstteerreessiiss ((VVCCCC)) TA = 125°C 10 50 mmVV TA = MIN 10 60 TA = 25°C 1.50 Reset threshold voltagge ((VCCCC)) TA = 125°C 0.95 V TA = MIN 1.50 †All typical values are at TA = 25°C unless otherwise indicated. 6 www.ti.com

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 short-circuit protection control section TL1451AQ, TL1451AM PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX TA = 25°C 650 700 750 IInnpuutt tthhrreesshhoolldd vvoollttaaggee ((SSCCPP)) TA = 125°C 400 478 550 mmVV TA = MIN 800 880 950 Standby voltage (SCP) 140 185 230 mV TA = 25°C 60 120 LLaattcchheedd iinnpuutt vvoollttaaggee ((SSCCPP)) TA = 125°C 70 120 mmVV TA = MIN 60 120 Equivalent timing resistance 170 kΩ Comparator threshold voltage (FEEDBACK) 1.18 V †All typical values are at TA = 25°C unless otherwise indicated. oscillator section TL1451AQ, TL1451AM PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX TA = 25°C 200 FFrreeqquueennccyy CCRRTTT === 11330033 00kk ΩΩpFF, TA = 125°C 195 kkHHzz TA = MIN 193 Standard deviation of frequency CT = 330 pF, RT = 10 kΩ 2% TA = 25°C 1% FFrreeqquueennccyy cchhaannggee wwiitthh vvoollttaaggee VVCCCC = 33..66 VV ttoo 4400 VV TA = 125°C 1% TA = MIN 3% Frequency change with temperature 1.37% *±10% *These parameters are not production tested. †All typical values are at TA = 25°C unless otherwise indicated. dead-time control section TL1451AQ, TL1451AM PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX TA = 25°C 1 IInnpputt bbiiaass ccurrrreenntt ((DDTTCC)) µAA TA = MIN and 125°C 3 Latch mode (source) current (DTC) –80 –145 µA TA = 25°C 2.30 LLaattcchheedd iinnpuutt vvoollttaaggee ((DDTTCC)) TA = 125°C 2.22 2.32 VV TA = MIN 2.28 2.40 Zero duty cycle 2.05 *2.25 IInnppuutt tthhrreesshhoolldd vvoollttaaggee aatt ff = 1100 kkHHzz ((DDTTCC)) VV Maximum duty cycle *1.20 1.45 *These parameters are not production tested. †All typical values are at TA = 25°C unless otherwise indicated. www.ti.com 7

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:22) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 error-amplifier section TL1451AQ, TL1451AM PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX TA = 25°C ±6 IInnpuutt ooffffsseett vvoollttaaggee VVOO ((FFEEEEDDBBAACCKK)) = 11..2255 VV TA = 125°C ±10 mmVV TA = MIN ±12 TA = 25°C ±100 IInnpuutt ooffffsseett ccuurrrreenntt VVOO ((FFEEEEDDBBAACCKK)) = 11..2255 VV TA = 125°C ±100 nnAA TA = MIN ±200 TA = 25°C 160 500 IInnpuutt bbiiaass ccuurrrreenntt VVOO ((FFEEEEDDBBAACCKK)) = 11..2255 VV TA = 125°C 100 500 nnAA TA = MIN 142 700 11..0055 CCoommmmoonn-mmooddee iinnpuutt vvoollttaaggee rraannggee VVCCCC == 33..66 VV ttoo 4400 VV ttoo VV 1.45 TA = 25°C 70 80 OOpeenn-lloooop vvoollttaaggee aammplliiffiiccaattiioonn RRFF = 220000 kkΩΩ TA = 125°C 70 80 ddBB TA = MIN 64 80 Unity-gain bandwidth 1.5 MHz Common-mode rejection ratio 60 80 dB Positive output voltage swing 2 V Negative output voltage swing 1 V TA = 25°C 0.5 1.6 OOuuttpuutt ((ssiinnkk)) ccuurrrreenntt ((FFEEEEDDBBAACCKK)) VVIIDD = –00..11 VV,, VVOO = 11..2255 VV TA = 125°C 0.4 1.8 mmAA TA = MIN 0.3 1.7 TA = 25°C –45 –70 Output ((source)) current ((FEEDBACK)) VIIDD = 0.1 V,, VOO = 1.25 V TA = 125°C –25 –50 µµA TA = MIN –15 –70 †All typical values are at TA = 25°C unless otherwise indicated. output section TL1451AQ, TL1451AM PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Collector off-state current VO = 50 V 10 µA TA = 25°C 1.20 2.0 OOuuttpuutt ssaattuurraattiioonn vvoollttaaggee TA = 125°C 1.60 2.4 VV TA = MIN 1.36 2.2 Short-circuit output current VO = 6 V 90 mA †All typical values are at TA = 25°C unless otherwise indicated. pwm comparator section TL1451AQ, TL1451AM PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Zero duty cycle 2.05 *2.25 IInnppuutt tthhrreesshhoolldd vvoollttaaggee aatt ff = 1100 kkHHzz ((FFEEEEDDBBAACCKK)) VV Maximum duty cycle *1.20 1.45 *These parameters are not production tested. †All typical values are at TA = 25°C unless otherwise indicated. 8 www.ti.com

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 total device TL1451AQ, TL1451AM PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP† MAX Standby supply current Off-state 1.3 1.8 mA Average supply current RT = 10 kΩ 1.7 2.4 mA †All typical values are at TA = 25°C unless otherwise indicated. PARAMETER MEASUREMENT INFORMATION Test S1 Input VCC = 5 V RL CPE 0.47 µF 4.7 kΩ OUT1 RL 4.7 kΩ OUT2 16 15 14 13 12 11 10 9 TL1451A 1 2 3 4 5 6 7 8 CT RT 330 pF 10 kΩ Test Input Figure 1. Test Circuit Oscillator Triangle Waveform Error Amplifier Output 2.0 V Dead-Time Input Voltage 1.6 V 1.4 V Short-Circuit Protection 1.25 V Comparator Input Voltage H PWM Comparator Output Voltage L Dead Time 100% H Output Transistor Collector Waveform L 0.6 V Protection Enable Terminal Waveform 0 V tpe† Short-Circuit Protection H Comparator Output L 3.6 V Power Supply Voltage 2.8 V TYP 0 V †Protection Enable Time, tpe = (0.051 x 106 x Cpe) in seconds Figure 2. TL1451A Timing Diagram www.ti.com 9

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:22) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS TRIANGLE OSCILLATOR FREQUENCY OSCILLATOR FREQUENCY VARIATION vs vs TIMING RESISTANCE FREE-AIR TEMPERATURE 1 M 3 VCC = 5 V VCC = 3.6 V y – Hz TA = 25°C n – % 2 CRTT == 1303 0k ΩpF equenc 100 k CT = 150 pF Variatio 1 ÎfosÎc = Î200 ÎkHzÎÎÎÎÎÎÎÎ Fr y ator uenc ÎÎÎÎÎÎÎÎÎÎÎÎ e Oscill CT = 1500 pF or Freq 0 ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ gl 10 k at –1 ÎÎÎÎÎÎÎÎÎÎÎÎ an cill Tri Os ÎÎÎÎÎ fosc – fosc CT = 15000 pF ∆afosc – fosc –2 1 k –3 1 k 4 k 10 k 40 k 100 k 400 k 1 M –25 0 25 50 75 100 RT – Timing Resistance – Ω TA – Free-Air Temperature – °C Figure 3 Figure 4 TRIANGLE WAVEFORM SWING VOLTAGE TRIANGLE WAVEFORM PERIOD vs vs TIMING CAPACITANCE TIMING CAPACITANCE 2.6 102 VCC = 5 V VCC = 5 V 2.4 RT = 5.1 kΩ RT = 5.1 kΩ – V TA = 25°C TA = 25°C ge 2.2 µsuS a – Volt 2 od 101 g eri n P wi 1.8 m S r orm 1.6 vefo ef Wa v Wa 1.4 gle 100 e n ngl 1.2 Tria a Tri 1 0.8 10–1 101 102 103 104 105 101 102 103 104 105 CT – Timing Capacitance – pF CT – Timing Capacitance – pF Figure 5 Figure 6 10 www.ti.com

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS REFERENCE OUTPUT VOLTAGE VARIATION REFERENCE OUTPUT VOLTAGE VARIATION vs vs FREE-AIR TEMPERATURE FREE-AIR TEMPERATURE V 30 V 30 – m VCC = 3.6 V – m VCC = 40 V n II(ref) = 1 mA n II(ref) = 1 mA atio 20 atio 20 ari ari V V ge 10 ÎÎÎÎÎ ge 10 ÎÎÎÎÎ a a olt ÎÎÎÎÎÎÎÎÎÎÎÎ olt ÎÎÎÎÎÎÎÎÎÎÎ V V put 0 ÎÎÎÎÎÎÎÎÎÎÎÎ put 0 ÎÎÎÎÎÎÎÎÎÎÎ ut ut O ÎÎÎÎÎÎÎÎÎÎÎÎ O ÎÎÎÎÎÎÎÎÎÎÎ e e nc –10 ÎÎÎÎÎÎÎÎÎÎÎÎ nc –10 ÎÎÎÎÎÎÎÎÎÎÎ e e er ÎÎÎÎÎÎÎ er ÎÎÎÎÎÎ ef ef R R Á– Á– 20 Á– Á– 20 Áavref O(ref)Á Áavref ÁO(ref) Á∆VÁ– 30 Á∆VÁ– 30 ÁÁ – 25 0 25 50 75 100 ÁÁ – 25 0 25 50 75 100 TA – Free-Air Temperature – °C TA – Free-Air Temperature – °C Figure 7 Figure 8 REFERENCE OUTPUT VOLTAGE DROPOUT VOLTAGE VARIATION vs vs SUPPLY VOLTAGE FREE-TEMPERATURE 3 1.1 TA = 25°C II(ref) = 1 mA V e – 2.5 1 g V ut Volta 2 ation – 0.9 utp ari O V erence 1.5 Voltage 0.8 Ref 1 out 0.7 ÁÁVref – O(ref)ÁÁ0.5 Drop 0.6 V ÁÁ 0 0 5 10 15 20 25 30 35 40 – 25 0 25 50 75 100 VCC – Supply Voltage – V TA – Free-Air Temperature – °C Figure 9 Figure 10 www.ti.com 11

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:22) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS UNDERVOLTAGE LOCKOUT HYSTERESIS CHARACTERISTICS UNDERVOLTAGE LOCKOUT CHARACTERISTIC 6 3.5 300 Voltage – V 45 TA = 85°C TA = 25°C TA = –20°C hold Voltage – V 3.235 (TLherfet sShcoTalhlder )Vesohltoalgde V –oVltTaHge –VTL 220500 sis Voltage – mV ctor hres 2.75 (Left Scale) 150 yster ÁÁÁÁÁÁVCE – Output ColleVCE 321 7I,O180 =5 1V0R LmI =AV DIOE Undervoltage Lockout T 22.2.525 H(Ryisgthetr eSsciasl eV)oltage 105000 Undervoltage Lockout H 0 0 1 2 3 4 5 –25 0 25 50 75 100 VCC – Supply Voltage – V TA – Free-Air Temperature – °C Figure 11 Figure 12 SHORT-CIRCUIT PROTECTION CHARACTERISTICS 1.30 3 V e – V ge – g a olta 1.25 Short-Circuit Protection 2.5 Volt old V L(Raitgchht RSecsaelet )Supply Voltage pply h u s S r Thre 1.20 2 Reset parato Short-Circuit Protection Latch Com 1.15 Comparator Threshold Voltage 1.5 S – (Left Scale) R 1.10 1 – 25 0 25 50 75 100 TA – Free-Air Temperature – °C Figure 13 12 www.ti.com

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS PROTECTION ENABLE TIME vs PROTECTION ENABLE CAPACITANCE 18 15 s – e m Ti 12 e bl a n E 9 n o cti e ot 6 r P – pe pe tt 3 0 0 50 100 150 200 250 CPE – Protection Enable Capacitance – µF SCP Vref 15 16 170 kΩ Vref Vref Short-circuit Protection 12 kΩ Comparator S R CPE Protection U.V.L.O. ERROR AMP 1 Latch ERROR AMP 2 + 1.25 V – Figure 14 www.ti.com 13

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:22) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS ERROR AMP MAXIMUM OUTPUT VOLTAGE SWING OPEN-LOOP VOLTAGE AMPLIFICATION vs vs FREQUENCY FREQUENCY 2.25 90 V – VCC = 5 V VCC = 5 V wing 2 TA = 25°C – dB 80 TA = 25°C e S 1.75 on 70 ag ati ut Volt 1.12.55 mplific 5600 Outp ge A m 1 a 40 u olt m V xi 0.75 p 30 a o M o mp 0.5 n-L 20 e A p or 0.25 O 10 r r E 0 0 1 k 10 k 100 k 1 M 10 M 100 1 k 10 k 100 k 1 M 2 M f – Frequency – Hz f – Frequency – Hz Figure 15 Figure 16 GAIN (AMPLIFIER IN UNITY-GAIN CONFIGURATION) vs FREQUENCY 10 VCC = 5 V TA = 25°C 5 0 B d – ain –5 G – G –10 –15 –20 1 k 10 k 100 k 1 M 10 M f – Frequency – Hz Figure 17 14 www.ti.com

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS CLOSED-LOOP GAIN AND PHASE SHIFT vs FREQUENCY 70 VCC = 5 V CX: 47 pF Rref = 150 Ω 470 pF 60 Cref = 470 pF 4700 pF TA = 25°C Phase Shift B 50 d (Right Scale) Gain – 40 C(Lleofst eSdc-aLloeo)p Gain 0–°10° hift Loop 30 ––2300°° hase S d- P e –40° s o Cl 20 –50° –60° 10 –70° –80° 0 –90° 100 1 k 10 k 100 k 1 M f – Frequency – Hz Vref + – 39 kΩ Cx Rref Cref 39 kΩ Test Circuit Figure 18 www.ti.com 15

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:22) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS CLOSED-LOOP GAIN AND PHASE SHIFT vs FREQUENCY 70 VCC = 5 V CX: 47 pF Rref = 15 Ω 470 pF 60 Cref = 470 pF 4700 pF TA = 25°C Phase Shift B 50 d (Right Scale) – 0° Gain 40 C(Lleofst eSdc-aLloeo)p Gain –10° hift Loop 30 ––2300°° hase S d- P e –40° s o Cl 20 –50° –60° 10 –70° –80° 0 –90° 100 1 k 10 k 100 k 1 M f – Frequency – Hz Vref + – 39 kΩ Cx Rref Cref 39 kΩ Test Circuit Figure 19 16 www.ti.com

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS CLOSED-LOOP GAIN AND PHASE SHIFT vs FREQUENCY 70 VCC = 5 V CX: 47 pF Rref = 15 Ω 470 pF 60 Cref = 470 pF 4700 pF TA = 25°C B 50 d Phase Shift Gain – 40 C(Lleofst eSdc-aLloeo)p Gain (Right Scale) 0–°10° hift Loop 30 ––2300°° hase S d- P e –40° s o Cl 20 –50° –60° 10 –70° –80° 0 –90° 100 1 k 10 k 100 k 1 M f – Frequency – Hz Vref + – 39 kΩ Cx Rref Cref 39 kΩ Test Circuit Figure 20 www.ti.com 17

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:22) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS CLOSED-LOOP GAIN AND PHASE SHIFT vs FREQUENCY 70 VCC = 5 V Cref = 470 pF 60 TA = 25°C B 50 d – 0° Gain 40 Closed-Loop Gain –10° hift Loop 30 (Left Scale) P(Rhiagshet SSchaiflte) ––2300°° hase S d- P e –40° s o Cl 20 –50° –60° 10 –70° –80° 0 –90° 100 1 k 10 k 100 k 1 M f – Frequency – Hz Vref + – 39 kΩ Cref 39 kΩ Test Circuit Figure 21 18 www.ti.com

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS OUTPUT SINK CURRENT vs COLLECTOR OUTPUT SATURATION VOLTAGE 120 TA = –20°C 110 TA = 25°C 100 A 90 TA = 85°C m – 80 nt e 70 r r u C 60 k n Si 50 put 40 ut O 30 20 VCC = 3.6 V 10 0 0 5 10 15 20 Collector Output Saturation Voltage – V Figure 22 MAXIMUM OUTPUT VOLTAGE SWING vs FREE-AIR TEMPERATURE VO(ref) –0.01 1 Vref V V g – VO(ref) –0.02 0.9 g – 33 kΩ n n wi wi S Maximum Output Voltage S + e e ag VO(ref) –0.03 Swing (Right Scale) 0.8 ag 33 kΩ – olt olt RL V V put VO(ref) –0.04 0.7 put 100 kΩ Out Out Vvom – 1 m m ximu VO(ref) –0.05 MVoalxtaimgeu mSw Oinugtp (uRtight Scale) 0.6 ximu VRCL C= =1 030.6 k VΩ Ma Ma VOM+1 = 1.25 V – VO(ref) –0.06 0.5 – VOM –1 = 1.15 V (Right Scale) M M VOM –1 = 1.35 V (Left Scale) O O V V TEST CIRCUIT VO(ref) –0.07 –25 0 25 50 75 100 TA – Free-Air Temperature – °C Figure 23 www.ti.com 19

(cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:22) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS OUTPUT TRANSISTOR ON DUTY CYCLE STANDBY CURRENT vs vs DEAD-TIME INPUT VOLTAGE SUPPLY VOLTAGE 0 10 VRCT C= =1 03k.6Ω V 2 TA = 25°C – % CT = 330 pF mA ycle 20 nt – 1.75 C 30 e uty Curr 1.5 n” D 40 dby 1.25 O 50 n “ a sistor 60 y) – St 1 n b 0.75 ut Tra 70 Stand 0.5 Outp 80 ÁÁCC (CC 90 ÁÁII 0.25 100 0 0 0.5 1 1.5 2 2.5 3 3.5 4 0 10 20 30 40 Dead-Time Input Voltage – V VCC – Supply Voltage – V Figure 24 Figure 25 STANDBY CURRENT MAXIMUM CONTINUOUS POWER DISSIPATION vs vs FREE-AIR TEMPERATURE FREE-AIR TEMPERATURE 1200 W Average Supply Current m 1100 2 VCC = 6 V, RT = 10 kΩ, n – 1000 16-Pin N Plastic Dip – mA 11.7.55 CT = 330 pF ssipatio 890000 T12h5e°rCm/aWl Resistance rent Stand-By Current, VCC = 40 V, No Load er Di 700 ur 1.25 w ply C 1 Stand-By Current, VCC = 3.6 V, No Load us Po 650000 16-Pin NS Plastic SO p o u u ÁÁÁÁIICC – SCC 00.7.55 m Contin 430000 Thermal Re2s5is0t°aCn/cWe u 200 m 0.25 xi 100 a M 0 0 –25 0 25 50 75 100 –25 0 25 50 75 100 TA – Free-Air Temperature – °C TA – Free-Air Temperature Figure 26 Figure 27 20 www.ti.com

(cid:22) (cid:1)(cid:2)(cid:3)(cid:4)(cid:5)(cid:3)(cid:6) (cid:7)(cid:8)(cid:6)(cid:2) (cid:10)(cid:8)(cid:2)(cid:11)(cid:12)(cid:13)(cid:14)(cid:15)(cid:7)(cid:1)(cid:16)(cid:13)(cid:17)(cid:18)(cid:7)(cid:8)(cid:2)(cid:6)(cid:1)(cid:15)(cid:18)(cid:19) (cid:20)(cid:18)(cid:19)(cid:1)(cid:21)(cid:18)(cid:2) (cid:20)(cid:15)(cid:21)(cid:20)(cid:8)(cid:15)(cid:1)(cid:11) (cid:22) SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999 APPLICATION INFORMATION VCC 220 kΩ 150 Ω 470 Ω L1 0.47 µF 50 kΩ 33 kΩ 330 pF 33 kΩ R1 R3 R2 Step-Up C2 Output 33 kΩ 33 kΩ R4 C1 500 pF Vref 16 15 14 13 12 11 10 9 TL1451A 1 2 3 4 5 6 7 8 470 Ω 470 Ω C5 R5 500 220 Ω 1 µF L2 pF R6 Step-Down C4 Output 33 kΩ 470 Ω R7 33 kΩ NOTE A: Values for R1 through R7, C1 through C4, and L1 and L2 depend upon individual application. Figure 28. High-Speed Dual Switching Regulator www.ti.com 21

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) TL1451ACD ACTIVE SOIC D 16 40 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 TL1451AC & no Sb/Br) TL1451ACDBR ACTIVE SSOP DB 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 T1451A & no Sb/Br) TL1451ACDBRG4 ACTIVE SSOP DB 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 T1451A & no Sb/Br) TL1451ACDR ACTIVE SOIC D 16 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 TL1451AC & no Sb/Br) TL1451ACN ACTIVE PDIP N 16 25 Green (RoHS NIPDAU N / A for Pkg Type -20 to 85 TL1451ACN & no Sb/Br) TL1451ACNSR ACTIVE SO NS 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 TL1451A & no Sb/Br) TL1451ACPW ACTIVE TSSOP PW 16 90 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 T1451A & no Sb/Br) TL1451ACPWR ACTIVE TSSOP PW 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 T1451A & no Sb/Br) TL1451ACPWRG4 ACTIVE TSSOP PW 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 T1451A & no Sb/Br) TL1451AQD ACTIVE SOIC D 16 40 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 TL1451AQ & no Sb/Br) TL1451AQDR ACTIVE SOIC D 16 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 TL1451AQ & no Sb/Br) TL1451CN ACTIVE PDIP N 16 25 Green (RoHS NIPDAU N / A for Pkg Type -20 to 85 TL1451CN & no Sb/Br) TL1451CNS ACTIVE SO NS 16 50 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 TL1451 & no Sb/Br) TL1451CNSR ACTIVE SO NS 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 TL1451 & no Sb/Br) TL1451INSR ACTIVE SO NS 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -20 to 85 TL1451I & no Sb/Br) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. OTHER QUALIFIED VERSIONS OF TL1451A : •Automotive: TL1451A-Q1 •Enhanced Product: TL1451A-EP NOTE: Qualified Version Definitions: •Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects •Enhanced Product - Supports Defense, Aerospace and Medical Applications Addendum-Page 2

PACKAGE MATERIALS INFORMATION www.ti.com 12-Feb-2019 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) TL1451ACDBR SSOP DB 16 2000 330.0 16.4 8.35 6.6 2.5 12.0 16.0 Q1 TL1451ACDR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 TL1451ACNSR SO NS 16 2000 330.0 16.4 8.1 10.4 2.5 12.0 16.0 Q1 TL1451ACPWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 TL1451AQDR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 TL1451CNSR SO NS 16 2000 330.0 16.4 8.1 10.4 2.5 12.0 16.0 Q1 TL1451INSR SO NS 16 2000 330.0 16.4 8.1 10.4 2.5 12.0 16.0 Q1 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 12-Feb-2019 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) TL1451ACDBR SSOP DB 16 2000 367.0 367.0 38.0 TL1451ACDR SOIC D 16 2500 333.2 345.9 28.6 TL1451ACNSR SO NS 16 2000 367.0 367.0 38.0 TL1451ACPWR TSSOP PW 16 2000 367.0 367.0 35.0 TL1451AQDR SOIC D 16 2500 350.0 350.0 43.0 TL1451CNSR SO NS 16 2000 367.0 367.0 38.0 TL1451INSR SO NS 16 2000 367.0 367.0 38.0 PackMaterials-Page2

None

None

PACKAGE OUTLINE PW0016A TSSOP - 1.2 mm max height SCALE 2.500 SMALL OUTLINE PACKAGE SEATING PLANE C 6.6 TYP 6.2 A 0.1 C PIN 1 INDEX AREA 14X 0.65 16 1 2X 5.1 4.55 4.9 NOTE 3 8 9 0.30 B 4.5 16X 0.19 1.2 MAX 4.3 0.1 C A B NOTE 4 (0.15) TYP SEE DETAIL A 0.25 GAGE PLANE 0.15 0.05 0.75 0.50 0 -8 DETA 20AIL A TYPICAL 4220204/A 02/2017 NOTES: 1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side. 4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side. 5. Reference JEDEC registration MO-153. www.ti.com

EXAMPLE BOARD LAYOUT PW0016A TSSOP - 1.2 mm max height SMALL OUTLINE PACKAGE 16X (1.5) SYMM (R0.05) TYP 1 16X (0.45) 16 SYMM 14X (0.65) 8 9 (5.8) LAND PATTERN EXAMPLE EXPOSED METAL SHOWN SCALE: 10X SOLDER MASK METAL UNDER SOLDER MASK OPENING METAL SOLDER MASK OPENING EXPOSED METAL EXPOSED METAL 0.05 MAX 0.05 MIN ALL AROUND ALL AROUND NON-SOLDER MASK SOLDER MASK DEFINED DEFINED (PREFERRED) SOLDE15.000R MASK DETAILS 4220204/A 02/2017 NOTES: (continued) 6. Publication IPC-7351 may have alternate designs. 7. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com

EXAMPLE STENCIL DESIGN PW0016A TSSOP - 1.2 mm max height SMALL OUTLINE PACKAGE 16X (1.5) SYMM (R0.05) TYP 1 16X (0.45) 16 SYMM 14X (0.65) 8 9 (5.8) SOLDER PASTE EXAMPLE BASED ON 0.125 mm THICK STENCIL SCALE: 10X 4220204/A 02/2017 NOTES: (continued) 8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 9. Board assembly site may have different recommendations for stencil design. www.ti.com

None

MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,65 0,15 M 0,22 28 15 0,25 0,09 5,60 8,20 5,00 7,40 Gage Plane 1 14 0,25 A 0°–(cid:1)8° 0,95 0,55 Seating Plane 2,00 MAX 0,05 MIN 0,10 PINS ** 14 16 20 24 28 30 38 DIM A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 4040065/E 12/01 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion not to exceed 0,15. D. Falls within JEDEC MO-150 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265

None

IMPORTANTNOTICEANDDISCLAIMER TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources. TI’s products are provided subject to TI’s Terms of Sale (www.ti.com/legal/termsofsale.html) or other applicable terms available either on ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2020, Texas Instruments Incorporated