5-V Low Drop Fixed Voltage Regulator TLE 4271-2 Features • Output voltage tolerance ≤ ±2% (cid:127) Low-drop voltage (cid:127) Integrated overtemperature protection (cid:127) Reverse polarity protection (cid:127) Input voltage up to 42 V P-TO220-7-11 (cid:127) Overvoltage protection up to 65 V ( ≤ 400 ms) (cid:127) Short-circuit proof (cid:127) Suitable for use in automotive electronics ^ (cid:127) Wide temperature range (cid:127) Adjustable reset and watchdog time (cid:127) Green Product (RoHS compliant) (cid:127) AEC Qualified Functional Description P-TO220-7-12 The TLE 4271-2 is functional and electrical identical to TLE 4271. The device is a 5-V low drop fixed voltage regulator. The maximum input voltage is 42 V (65 V, ≤ 400 ms). Up to an input voltage of 26 V and for an output current up to 550 mA it regulates the output voltage within a 2% accuracy. The short circuit protection limits the output current of more than 650 mA. The IC can be switched off via the inhibit input. An integrated watchdog monitors the P-TO263-7-1 connected controller. The device incorporates overvoltage protection and temperature protection that disables the circuit at overtemperature. Type Package TLE 4271-2 PG-TO220-7-11 TLE 4271-2 S PG-TO220-7-12 TLE 4271-2 G PG-TO263-7-1 Data Sheet 1 Rev. 2.7, 2007-06-25

TLE 4271-2 PG-TO220-7-11 PG-TO220-7-12 PG-TO263-7-1 1 7 Ι RO D Q 1 7 1 7 INH GND WI AEP01938 Ι RO D Q Ι RO D Q INH GND WI INH GND WI AEP01939 AEP02017 Figure 1 Pin Configuration (top view) Table 1 Pin Definitions and Functions Pin Symbol Function 1 I Input; block to ground directly on the IC with ceramic capacitor. 2 INH Inhibit 3 RO Reset Output; the open collector output is connected to the 5 V output via an integrated resistor of 30 kΩ. 4 GND Ground 5 D Reset Delay; connect a capacitor to ground for delay time adjustment. 6 WI Watchdog Input 7 Q 5-V Output; block to ground with 22 µF capacitor, ESR < 3 Ω. Data Sheet 2 Rev. 2.7, 2007-06-25

TLE 4271-2 Circuit Description The control amplifier compares a reference voltage, which is kept highly accurate by resistance adjustment, to a voltage that is proportional to the output voltage and drives the base of a series transistor via a buffer. Saturation control as a function of the load current prevents any over-saturation of the power element. The reset output RO is in high-state if the voltage on the delay capacitor C is greater or D equal V . The delay capacitor C is charged with the current I for output voltages UD D D greater than the reset threshold V . If the output voltage gets lower than V (‘reset RT RT condition’) a fast discharge of the delay capacitor C sets in and as soon as V gets D D lower than V the reset output RO is set to low-level. LD The time for the delay capacitor charge from V to V is the reset delay time t . UD LD D When the voltage on the delay capacitor has reached V and reset was set to high, the UD watchdog circuit is enabled and discharges C with the constant current I . If there is D DWD no rising edge observed at the watchdog input, C will be discharge down to V , then D LDW reset output RO will be set to low and C will be charged again with the current I until D DWC V reaches V and reset will be set high again. D UD If the watchdog pulse (rising edge at watchdog input WI) occurs during the discharge period C is charged again and the reset output stays high. After V has reached V , D D UD the periodical behavior starts again. Internal protection circuits protect the IC against: (cid:127) Overload (cid:127) Overvoltage (cid:127) Overtemperature (cid:127) Reverse polarity Data Sheet 3 Rev. 2.7, 2007-06-25

TLE 4271-2 Saturation Temperature Control and Sensor Protection Circuit 1 7 Ι Q Control Amplifier Buffer 3 Bandgap RO Adjustment + Reference - Reset Generator 5 D 6 Watchdog WI 2 4 INH GND AEB01940 Figure 2 Block Diagram Data Sheet 4 Rev. 2.7, 2007-06-25

TLE 4271-2 Table 2 Absolute Maximum Ratings T = -40 to 150 °C j Parameter Symbol Limit Values Unit Notes Min. Max. Input Voltage V -42 42 V – I Voltage V – 65 V t ≤ 400 ms I Current I – – mA internally limited I Inhibit Voltage V -42 42 V – INH Voltage V – 65 V t ≤ 400 ms INH Current I – – mA internally limited INH Reset Output Voltage V -0.3 42 V – RO Current I – – mA internally limited RO Reset Delay Voltage V -0.3 7 V – D Current I -5 5 mA – D Watchdog Voltage V -0.3 7 V – W Current I -5 5 mA – W Output Voltage V -1.0 16 V – Q Current I -5 – mA internally limited Q Ground Current I -0.5 – A – GND Temperatures Junction temperature T – 150 °C – j Storage temperature T -50 150 °C – stg Data Sheet 5 Rev. 2.7, 2007-06-25

TLE 4271-2 Table 3 Operating Range Parameter Symbol Limit Values Unit Notes Min. Max. Input voltage V 6 40 V – I Junction temperature T -40 150 °C – j Thermal Resistance Junction ambient R – 65 K/W – thja – 70 K/W PG-TO263-7-1 Junction case R – 3 K/W – thjc Z – 2 K/W t < 1 ms thjc Data Sheet 6 Rev. 2.7, 2007-06-25

TLE 4271-2 Table 4 Characteristics V = 13.5 V; -40 °C ≤ T ≤ 125 °C; V > V (unless otherwise specified) I j INH U,INH Parameter Symbol Limit Values Unit Test Condition Min. Typ. Max. Output voltage V 4.90 5.00 5.10 V 5 mA ≤ I ≤ 550 mA; Q Q 6 V ≤ V ≤ 26 V I Output voltage V 4.90 5.00 5.10 V 26 V ≤ V ≤ 36 V; Q I I ≤ 300 mA Q Output current I 650 800 – mA V = 0 V Qmax Q limiting Current I – – 6 µA V = 0 V; I = 0 mA q INH Q consumption I = I q I Current I – 800 – µA V = 5 V; I = 0 mA q INH Q consumption I = I q I Current I – 1 1.5 mA I = 5 mA q Q consumption I = I - I q I Q Current I – 55 75 mA I = 550 mA q Q consumption I = I - I q I Q Current I – 70 90 mA I = 550 mA; V = 5 V q Q I consumption I = I - I q I Q Drop voltage V – 350 700 mV I = 550 mA1) dr Q Load regulation ∆V – 25 50 mV I = 5 to 550 mA; Q Q V = 6 V I Supply voltage ∆V – 12 25 mV V = 6 to 26 V Q I regulation I = 5 mA Q Power supply Ripple PSRR – 54 – dB f = 100 Hz; r rejection V = 0.5 Vpp r Data Sheet 7 Rev. 2.7, 2007-06-25

TLE 4271-2 Table 4 Characteristics (cont’d) V = 13.5 V; -40 °C ≤ T ≤ 125 °C; V > V (unless otherwise specified) I j INH U,INH Parameter Symbol Limit Values Unit Test Condition Min. Typ. Max. Reset Generator Switching threshold V 4.5 4.65 4.8 V – RT Reset high voltage V 4.5 – – V – ROH Saturation voltage V – 60 – mV R = 30 kΩ; RO,SAT intern 1.0 V ≤ V ≤ 4.5 V Q Saturation voltage V – 200 400 mV I = 3 mA2); RO,SAT R V = 4.4 V Q Reset pull-up R 18 30 46 kΩ internally connected to Q Lower reset timing V 0.2 0.45 0.8 V V < V LD Q RT threshold Charge current I 8 14 25 µA V = 1.0 V D D Upper timing V 1.4 1.8 2.3 V – UD threshold Delay time t 8 13 18 ms C = 100 nF D D Reset reaction time t – – 3 µs C = 100 nF RR D Overvoltage Protection Turn-off voltage V 40 44 46 V – I, ov Inhibit Turn-on voltage V 1.0 2.0 3.5 V V = high (> 4.5 V) U,INH Q Turn-off voltage V 0.8 1.3 3.3 V V = low (< 0.8 V) L,INH Q Inhibit current I 8 12 25 µA V = 5 V INH INH Watchdog Upper watchdog V 1.4 1.8 2.3 V – UDW switching threshold Lower watchdog V 0.2 0.45 0.8 V – LDW switching threshold Discharge current I 1.5 2.7 3.5 µA V = 1 V DWD D Charge current I 8 14 25 µA V = 1 V DWC D Watchdog period t 40 55 80 ms C = 100 nF WD,P D Data Sheet 8 Rev. 2.7, 2007-06-25

TLE 4271-2 Table 4 Characteristics (cont’d) V = 13.5 V; -40 °C ≤ T ≤ 125 °C; V > V (unless otherwise specified) I j INH U,INH Parameter Symbol Limit Values Unit Test Condition Min. Typ. Max. Watchdog trigger t 30 45 66 ms C = 100 nF WI,tr D time see diagram Watchdog pulse V 5 – – V/µs from 20% to 80% V WI Q slew rate 1) Drop voltage = V - V (measured when the output voltage has dropped 100 mV from the nominal value I Q obtained at 13.5 V input) 2) Test condition not applicable during delay time for power-on reset. Data Sheet 9 Rev. 2.7, 2007-06-25

TLE 4271-2 Ι Ι Ι 1 7 Q 1000 µ F 470 nF 22 µ F TLE 4271-2 Ι 2 3 RO VΙ VQ 5 6 4 Ι Ι V INH D GND V VD CD VWI RO AES01941 Figure 3 Test Circuit 1 7 Input 5 V-Output 470 nF Input 2 TLE 4271-2 e.g. KL 15 22 µ F Reset 3 5 to MC 100 nF 4 6 Watchdog Signal from MC AES01942 Figure 4 Circuit Data Sheet 10 Rev. 2.7, 2007-06-25

TLE 4271-2 Application Description The IC regulates an input voltage in the range of 6 V < V < 40 V to V = 5.0 V. Up to I Qnom 26 V it produces a regulated output current of more than 550 mA. Above 26 V the save- operating-area protection allows operation up to 36 V with a regulated output current of more than 300 mA. Overvoltage protection limits operation at 42 V. The overvoltage protection hysteresis restores operation if the input voltage has dropped below 36 V. The IC can be switched off via the inhibit input, which causes the quiescent current to drop below 10 µA. A reset signal is generated for an output voltage of V < 4.5 V. The Q watchdog circuit monitors a connected controller. If there is no positive-going edge at the watchdog input within a fixed time, the reset output is set to low. The delay for power-on reset and the maximum permitted watchdog-pulse period can be set externally with a capacitor. Design Notes for External Components An input capacitor C is necessary for compensation of line influences. The resonant I circuit consisting of lead inductance and input capacitance can be damped by a resistor of approx. 1 Ω in series with C. An output capacitor C is necessary for the stability of I Q the regulating circuit. Stability is guaranteed at values of C ≥ 22 µF and an ESR of Q < 3 Ω. Reset Circuitry If the output voltage decreases below 4.5 V, an external capacitor C on pin D will be D discharged by the reset generator. If the voltage on this capacitor drops below V , a DRL reset signal is generated on pin RO, i.e. reset output is set low. If the output voltage rises above the reset threshold, C will be charged with constant current. After the power-on- D reset time the voltage on the capacitor reaches V and the reset output will be set high DU again. The value of the power-on-reset time can be set within a wide range depending of the capacitance of C . D Reset Timing The power-on reset delay time is defined by the charging time of an external capacitor C which can be calculated as follows: d t = C × ∆V/I (1) D D D Definitions: (cid:127) C = delay capacitor D (cid:127) t = reset delay time D (cid:127) I = charge current, typical 14 µA D (cid:127) ∆V = V , typical 1.8 V UD (cid:127) V = upper delay timing threshold at C for reset delay time UD D Data Sheet 11 Rev. 2.7, 2007-06-25

TLE 4271-2 The reset reaction time t is the time it takes the voltage regulator to set the reset out rr LOW after the output voltage has dropped below the reset threshold. It is typically 1 µs for delay capacitor of 47 nF. For other values for C the reaction time can be estimated d using the following equation: t ≈ 20 s/F × C (2) RR d V Ι t V INH V U, INH V L, INH <t t V RR Q V RT t t V RR D dV Ι D = dt C V D UD V LD V D, SAT t V RO t D V RO, SAT t Poweron Thermal Voltage Drop Undervoltage Secondary Load Shutdown Reset Shutdown at Input at Output Spike Bounce AET01985 Figure 5 Time Response Data Sheet 12 Rev. 2.7, 2007-06-25

TLE 4271-2 Watchdog Timing VWΙ VΙ V Q V tWΙ, tr tWD, P D V UDW V LDW t V WD, L R (V -V ) (V -V )(Ι +Ι ) (V -V ) UDW LDW UDW LDW DWC DWD UDW LDW tWΙ, tr= Ι CD; tWD, P = Ι .Ι CD; tWD, L= Ι CD DWD DWC DWD DWC AES03078 Figure 6 Time Response, Watchdog Behavior Data Sheet 13 Rev. 2.7, 2007-06-25

TLE 4271-2 Typical Performance Characteristics Output Voltage V versus Output Voltage V versus Q Q Temperature T Input Voltage V (V = V) j I INH I AED01928 AED01929 5.2 12 V V V Q V Q 5.1 10 V = 13.5 V I 5.0 8 4.9 6 R = 25Ω L 4.8 4 4.7 2 4.6 0 -40 0 40 80 120 ˚C160 0 2 4 6 8 V 10 T j VΙ Data Sheet 14 Rev. 2.7, 2007-06-25

TLE 4271-2 Output Current Limit I versus Output Current I versus Q Q Temperature T Input Voltage V j I 1200 AED01930 1.2 AED01931 mA I I A Q max Q 1000 1.0 800 0.8 T = 125 ˚C 600 0.6 j 25 ˚C 400 0.4 200 0.2 0 0 -40 0 40 80 120 ˚C160 0 10 20 30 40 V 50 T V j I Current Consumption I versus Current Consumption I versus q q Output Current I Output Current I Q Q AED03076 AED03077 6 80 mA Ι mA Ι q q 70 5 60 4 50 3 40 V = 13.5 V Ι 30 2 V = 13.5 V Ι 20 1 10 0 0 0 20 40 60 80 mA 120 0 100 200 300 400 mA 600 Ι Ι Q Q Data Sheet 15 Rev. 2.7, 2007-06-25

TLE 4271-2 Current Consumption I versus Drop Voltage V versus q dr Input Voltage V Output Current I I Q AED02755 AED01934 120 800 mV I mA q V Dr 700 100 600 80 500 R = 10Ω Tj= 125 C L 60 400 300 40 R = 20Ω 200 Tj= 25 C L 50Ω 20 100 0 0 0 10 20 30 40 V 50 0 200 400 600 mA 1000 V Ι I Q Inhibit Current I versus Output Voltage V versus INH Q Inhibit Voltage V Inhibit Voltage V INH INH AED01944 AED01945 12 6 Ι µA INH, high V Ι V INH Q 10 5 Ι VΙ= 13.5 V INH, on T = 25 C j 8 4 6 3 VΙ= 13.5 V T = 25 C j 4 2 2 1 Ι INH, off 0 0 0 1 2 3 4 5 V 6 0 1 2 3 4 5 V 6 V V INH INH Data Sheet 16 Rev. 2.7, 2007-06-25

TLE 4271-2 Inhibit Current Consumptions I Inhibit Voltages V versus INH INH versus Temperature T Temperature T j j AED01946 AED01947 14 6 µA Ι V INH V 12 INH 5 Ι INH, high 10 4 8 Ι 3 INH, on 6 V INH, on 2 4 1 2 V INH, off Ι INH, off 0 0 -40 0 40 80 120 160 -40 0 40 80 120 C160 T T j j Switching Voltage V and V UD LDW versus Temperature T j AED01948 2.4 V VΙ = 13.5 V V 2.0 V , V UD UDW 1.6 1.2 0.8 0.4 V LDW 0 -40 0 40 80 120 C160 T j Data Sheet 17 Rev. 2.7, 2007-06-25

TLE 4271-2 Charge Current I , I and Discharge Watchdog Pulse Time T versus D DWC w Current I versus Temperature T Temperature T DWD j j AED01950 AED01949 16 80 µA I ,I ms D DWC I T 14 W 70 12 60 10 50 8 VI = 13.5 V 40 VΙ = 13.5 V VD= 1 V CD= 100 nF 6 30 4 20 I DWD 2 10 0 0 -40 0 40 80 120 ˚C160 -40 0 40 80 120 C160 T j T j Data Sheet 18 Rev. 2.7, 2007-06-25

TLE 4271-2 Package Outlines 10±0.2 A 9.9±0.2 9.8±0.15 4.4 8.51) 1.27±0.1 3 1) 17±0.3 15.65±0. 13.4 2.8±0.2 3.7-0.15 0.05 25±0.2 ±0.3 9. 1.6 ±0.3 ±0.3 8.6 0.2 0.3 1 C 7± 3. 0.5±0.1 0...0.15 2.4 7x 0.6±0.1 3.9±0.4 6x1.27 8.4±0.4 0.25 M A C 1) Typical All metal surfaces tin plated, except area of cut. GPT09083 Figure 7 PG-TO220-7-11 (Plastic Transistor Single Outline) Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). You can find all of our packages, sorts of packing and others in our Infineon Internet Page “Products”: http://www.infineon.com/products. SMD = Surface Mounted Device Dimensions in mm Data Sheet 19 Rev. 2.7, 2007-06-25

TLE 4271-2 10±0.2 A 9.8±0.15 B 8.51) 4.4 3.7-0.15 1.27±0.1 3 1) 2 17±0.3 15.65±0. 13.4 2.8±0. 0.05 25±0.2 9. C 1±0.5 ±0.5 1 3 1 0...0.15 0.5±0.1 7x 0.6±0.1 2.4 1.27 0.25 M A B C 1) Typical All metal surfaces tin plated, except area of cut. GPT09084 Figure 8 PG-TO220-7-12 (Plastic Transistor Single Outline) Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). You can find all of our packages, sorts of packing and others in our Infineon Internet Page “Products”: http://www.infineon.com/products. SMD = Surface Mounted Device Dimensions in mm Data Sheet 20 Rev. 2.7, 2007-06-25

TLE 4271-2 4.4 10±0.2 1.27±0.1 0...0.3 A B 8.51) 3 0.05 0. ± 1 2.4 1) 2 5 5) 25±0. 7.5 0.1 (1 9. 7±0.5 2.7±0.3 4. 0...0.15 7 x 0.6±0.1 0.5±0.1 6 x 1.27 0.25 M A B 8˚ MAX. 0.1 B 1) Typical Metal surface min. X = 7.25, Y = 6.9 All metal surfaces tin plated, except area of cut. GPT09114 Figure 9 PG-TO263-7-1 (Plastic Transistor Single Outline) Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). You can find all of our packages, sorts of packing and others in our Infineon Internet Page “Products”: http://www.infineon.com/products. SMD = Surface Mounted Device Dimensions in mm Data Sheet 21 Rev. 2.7, 2007-06-25

TLE 4271-2 Revision History Version Date Changes Rev. 2.7 2007-03-20 Initial version of RoHS-compliant derivate of TLE 4271-2 Page 1: AEC certified statement added Page 1 and Page 19 ff: RoHS compliance statement and Green product feature added Page 1 and Page 19 ff: Package changed to RoHS compliant version Legal Disclaimer updated Data Sheet 22 Rev. 2.7, 2007-06-25

Edition 2007-06-25 Published by Infineon Technologies AG 81726 Munich, Germany © 2007 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

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