NDTD Series www.murata-ps.com Isolated 3W Wide Input Dual Output DC-DC Converters SELECTION GUIDE Order code Input voltage Rated output voltage LOMouaintdp. 1ut cFuurrlle lnotad Input currentfull load Efficiency 2 (Min.) Isolationcapacitance MTTF 3 V (Nom.) V mA mA mA % pF kHrs NDTD0505C 5 ±5 ±75 ±300 804 72 31 1640 NDTD0512C 5 ±12 ±31 ±125 764 76 36 1625 FEATURES NDTD0515C 5 ±15 ±25 ±100 773 75 34 1609 (cid:132)(cid:3)Industry standard footprint NDTD1205C 12 ±5 ±75 ±300 321 75 29 1665 NDTD1212C 12 ±12 ±31 ±125 311 78 32 1650 (cid:132)(cid:3)2:1 Input range, 3W output power, minimum NDTD1215C 12 ±15 ±25 ±100 310 78 36 1633 3:1 input range with power derating to 2W NDTD2405C 24 ±5 ±75 ±300 156 78 30 1675 (cid:132)(cid:3)Dual isolated output NDTD2412C 24 ±12 ±31 ±125 148 82 35 2075 NDTD2415C 24 ±15 ±25 ±100 146 82 41 2080 (cid:132)(cid:3)Short circuit protection NDTD4805C 48 ±5 ±75 ±300 79 76 30 1669 (cid:132)(cid:3)Operating temperature range -40ºC to 85ºC NDTD4812C 48 ±12 ±31 ±125 76 80 35 2090 NDTD4815C 48 ±15 ±25 ±100 75 81 36 2045 (cid:132)(cid:3)Load and line regulation <1% on both Recommended outputs Alternative (cid:132)(cid:3)No heatsink required NDTD0503C 5 ±3.3 ±113 ±454 890 67 30 1644 Contact Murata NDTD1203C 12 ±3.3 ±113 ±454 343 73 30 1668 Contact Murata (cid:132)(cid:3)1kVDC isolation ‘Hi Pot Test’ NDTD2403C 24 ±3.3 ±113 ±454 170 73 30 1671 Contact Murata (cid:132)(cid:3)5V, 12V, 24V & 48V Input NDTD4803C 48 ±3.3 ±113 ±454 86 72 30 1667 Contact Murata (cid:132)(cid:3)5V, 12V & 15V Output INPUT CHARACTERISTICS (cid:132)(cid:3)Internal SMD construction Parameter Conditions Min. Typ. Max. Units (cid:132)(cid:3)Fully encapsulated 5V input types 4.5 5 9 12V input types 9 12 18 Voltage range VDC 24V input types 18 24 36 DESCRIPTION 48V input types 36 48 75 The NDTD series is a range of low profile DC-DC 5V input types 40 90 converters offering dual outputs over a 2:1 input Reflected ripple current 4 mA p-p 12V, 24V & 48V input types 30 40 voltage range. All parts deliver 3W output power up to 85ºC without heatsinking. A flyback oscilla- ABSOLUTE MAXIMUM RATINGS tor design with isolated feedback is used to give Short-circuit protection 8 hours regulation over the full operating range of 25% to Lead temperature 1.5mm from case for 10 seconds 300°C 100% of full load. It is strongly recommended that external capacitors be used on input and output Minimum output load for specification1 25% of rated output to guarantee performance over full load and input Input voltage 5V types 10V voltage range (see application notes for guidance). Input voltage 12V types 20V The plastic case is rated to UL94V-0 and encap- Input voltage 24V types 40V sulant to UL94V-1 and the connection pins are Input voltage 48V types 80V formed from a tin plated alloy 42 leadframe. Free air space 10mm Min. around component 1. Please refer to minimum load application note section on page 4. 2. Measured at full load with external input/output capacitors, refer to test circuit. 3. Calculated using MIL-HDBK-217F with nominal input voltage at full load (ground benign) at 25°C. 4. Please refer to reflected ripple current measurement circuit on page 3. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support KDC_NDTD.G01 Page 1 of 7

NDTD Series Isolated 3W Wide Input Dual Output DC-DC Converters OUTPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units 5V outputs ±2 ±5 Voltage set point accuracy With external input/output capacitors % 12V & 15V outputs ±1 ±3 Line regulation Low line to high line with external input/output capacitors 0.15 0.5 % 25% load to 100% load with external input/output 5V outputs 0.5 1.0 % Load regulation capacitors with balanced load 12V & 15V outputs 0.2 0.5 % Ripple BW = 20Hz to 300kHz with external input/output capacitors 15 40 mV rms Ripple & noise BW = DC to 20MHz with external input/output capacitors 90 150 mV p-p NDTD05XXC, NDTD1205C, 5.0 % voltage change on negative output when NDTD2405C, NDTD4805C Cross regulation positive load varies from 12% to 50% of 3W rating, % with negative load fixed at 50% NDTD1212C, NDTD1215C, NDTD2412C, NDTD2415C, 2.1 3.0 NDTD4812C, NDTD4815C Short circuit protection Continuous GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Switching frequency 100% to 25% load, VIN min to max 60 620 kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Operation -40 85 Storage -50 130 NDTD0505C, NDTD0512C, NDTD1205C, NDTD2405C, NDTD4805C 35 ºC Case temperature rise above NDTD0515C, NDTD1212C, NDTD1215C, NDTD2412C, NDTD4812C, NDTD2415C, ambient in still air 28 NDTD4815C ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Isolation voltage Flash tested for 1 second 1000 VDC Resistance Viso=1KVDC 1 GΩ TECHNICAL NOTES ISOLATION VOLTAGE ‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage, applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. Murata Power Solutions NDTD series of DC-DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second. A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?” For a part holding no specific agency approvals, such as the NDTD series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to safety standard requirements. REPEATED HIGH-VOLTAGE ISOLATION TESTING It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. The NDTD series has an EI ferrite core, with no additional insulation between primary and secondary windings of enameled wire. While parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage. This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. www.murata-ps.com/support KDC_NDTD.G01 Page 2 of 7

NDTD Series Isolated 3W Wide Input Dual Output DC-DC Converters TERMINOLOGY LINE REGULATION The percentage change in output voltage between low intput voltage and high intput voltage, measured with fixed output load i.e. a 5V part with an output voltage of 5.05V @ high input voltage and 5.03V @ low input voltage would have a line regulation of 0.4%. Line regulation = VOUT (Low Input V) - VOUT (High Input V) x100% VOUT (Nominal Input V) Where VOUT (Nominal Input V) is 5V. APPLICATION NOTES Recommended Input & Output Capacitors Although these converters will work without external capacitors, they are necessary in order to guarantee the full parametric performance over the full line and load range. All parts have been tested and characterized using the following values and test circuit. Input Voltage CIN Output Voltage COUT 5V, 12V 100μF, 25V (0.25Ω at 100kHz) 5V 100μF, 25V (0.25Ω at 100kHz) 24V, 48V 10μF, 100V (1.5Ω at 100kHz) 12V, 15V 47μF, 25V (0.4Ω at 100kHz) Test circuit + VOUT Supply + VIN + VIN COUT CIN NDTD OV COUT Supply - VIN - VIN - VOUT Reflected Ripple Current Measurement Current Probe 12μH Supply +VIN +VIN +VOUT COUT Load C1 CIN NDTD OV COUT Load Supply -VIN -VIN -VOUT C1 = 220μF, ESR < 0.1Ω at 100kHz Cross Regulation Load regulation is at its best when the positive and negative loads are balanced. When the loads are asymmetric, the negative output is not as tightly regulated as the positive out- put. To meet ripple specification a total minimum load of 25% full load is required, however, the NDTD can be used with much lighter loading at the expense of increased ripple. A small load is required on the negative output of 150mW to ensure the maximum negative output voltage is not exceeded. www.murata-ps.com/support KDC_NDTD.G01 Page 3 of 7

NDTD Series Isolated 3W Wide Input Dual Output DC-DC Converters APPLICATION NOTES (continued) Minimum Load The minimum load for correct operation is 25% of the full rated load across the specified input voltage range. Lower loads may cause a significant increase in output ripple and may cause the output voltage to exceed its specification transiently during power-down when the input voltage also falls below its rated minimum. The following graphs show the typical required minimum load required for stable operation in mA verses input voltage. Some variants are not included as they do not typically require a minimum load for stable operation: NDTD0512C, NDTD0515C, NDTD1212C, and NDTD1215C. NDTD0505C 45 40 35 30 m Load (mA)25 mu20 Mini 15 0505 10 5 0 6 7 8 9 Input Voltage (V) NDTD1205C 50 45 40 35 mA)30 m Load (25 mu 1205 Mini20 15 10 5 0 6 8 10 12 14 16 18 Input Voltage (V) www.murata-ps.com/support KDC_NDTD.G01 Page 4 of 7

NDTD Series Isolated 3W Wide Input Dual Output DC-DC Converters APPLICATION NOTES (continued) NDTD24XXC 70 60 50 mA) m Load ( 40 mu Mini 30 20 2405 2415 10 2412 0 11 12 16 20 24 28 32 36 Input Voltage (V) NDTD48XXC 45 40 35 30 m Load (mA)25 4805 Minimu20 15 10 4812 4815 5 0 32 40 48 56 64 72 Input Voltage (V) www.murata-ps.com/support KDC_NDTD.G01 Page 5 of 7

NDTD Series Isolated 3W Wide Input Dual Output DC-DC Converters APPLICATION NOTES (continued) NDTD Power Derating The NDTD series will operate from a wider input range than specified in the input characteristics datasheet table with output power derating. NDTD05XXC NDTD12XXC 5 5 4 4 W) W) er ( 3 er ( 3 w w o o P P ut 2 ut 2 p p ut ut O 1 O 1 0 0 3 4.5 9 5 9 18 Input voltage (V) Input voltage (V) NDTD24XXC NDTD48XXC 5 5 4 4 W) W) er ( 3 er ( 3 w w o o P P ut 2 ut 2 p p ut ut O 1 O 1 0 0 11 18 36 20 36 75 Input voltage (V) Input voltage (V) RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300ºC for 10 seconds. The pin termination finish on this product series is Tin. The series is backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs www.murata-ps.com/support KDC_NDTD.G01 Page 6 of 7

NDTD Series Isolated 3W Wide Input Dual Output DC-DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS 32.26 (1.270) Pin Function NDTDXXXXC (cid:14)(cid:14)(cid:55)(cid:55)(cid:42)(cid:42)(cid:47)(cid:47) (cid:20)(cid:19) (cid:19)(cid:19)(cid:19)(cid:20) (cid:12)(cid:12)(cid:55)(cid:55)(cid:42)(cid:42)(cid:47)(cid:47) 2 -VIN 3 -VIN XYYWW (01.45.6767) 9 OV 11 -VOUT 14 +VOUT 16 OV 2.54 5.08 (cid:48)(cid:55) (cid:26) (cid:18)(cid:23) (cid:48)(cid:55) 22 +VIN (0.100) (0.200) 23 +VIN (cid:14)(cid:55)(cid:48)(cid:54)(cid:53) (cid:18)(cid:18) (cid:18)(cid:21) (cid:12)(cid:55)(cid:48)(cid:54)(cid:53) 7.00 (0.27) 5.00 (0.197) 4.00 (0.157) RECOMMENDED FOOTPRINT DETAILS 00..7633 ((00..002295)) x8 HOLES Ø11..4350 ((00..005571)) 4.70 22.86 (0.185) (0.900) 2.54 (0.1) 0.30 (0.012) 0.20 (0.008) 15.25 (0.600) 2.54(0.1) MAX All dimensions in mm(inches) ±0.25(0.010”). All dimensions in mm(inches) ±0.25(0.010”). All pins on a 2.54(0.10”) pitch and within All pins on a 2.54(0.10”) pitch and within ±0.25(0.010”) of true position. Weight: 6.0g ±0.25(0.010”) of true position. TUBE OUTLINE DIMENSIONS 20.70±0.55 (0.815±0.022) 16.70±0.55 (0.657±0.022) 11.70±0.80 (0.461±0.031) 5.50±0.25 (0.217±0.010) 16.70±0.80 (0.657±0.031) 6.80±0.55 (0.268±0.022) 0.60±0.15 (0.024±0.006) All dimensions in mm (inches) ±0.5mm (0.020”). Tube length : 520mm ±2mm (20.47±0.079”). Tube Quantity : 15 This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2017 Murata Power Solutions, Inc. www.murata-ps.com/support KDC_NDTD.G01 Page 7 of 7

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: M urata: NDTD4812C NDTD4815C NDTD2415C NDTD2412C NDTD1203C NDTD1205C NDTD4803C NDTD0512C NDTD2403C NDTD0515C NDTD0505C NDTD4805C NDTD2405C NDTD0503C NDTD1212C NDTD1215C