NDL Series www.murata-ps.com Isolated 2W Wide Input Single Output DC/DC Converters SELECTION GUIDE e Order Code VIonltpaugte RatVeodl tOaguetput MinO Luotapdu t3 CuFrruelln Lt 1oad InpFuutl lC Luorraednt 2 Efficiency Isolationapacitanc MTTF 4 C V (nom.) V mA mA mA % pF kHrs NDL0505SC 5 5 100 400 606 66 26 2015 NDL0509SC 5 9 55 222 558 71 27 1998 NDL0512SC 5 12 42 167 559 71 26 1980 NDL0515SC 5 15 33 134 549 73 27 1965 NDL1205SC 12 5 100 400 228 73 39 1994 FEATURES NDL1209SC 12 9 55 222 211 79 38 1981 (cid:132)(cid:3)RoHS compliant NDL1212SC 12 12 42 167 208 80 47 1961 (cid:132)(cid:3)2:1 wide range voltage input NDL1215SC 12 15 33 134 206 81 47 1947 NDL2405SC 24 5 100 400 112 74 37 1722 (cid:132)(cid:3)Continuous short circuit protection with NDL2409SC 24 9 55 222 102 81 40 1711 current foldback NDL2412SC 24 12 42 167 100 83 51 1696 (cid:132)(cid:3)Operating temperature range -40ºC to 85ºC NDL2415SC 24 15 33 134 100 83 58 1685 NDL4805SC 48 5 100 400 57 73 39 1719 (cid:132)(cid:3)0.75% regulation NDL4809SC 48 9 55 222 52 80 40 1709 (cid:132)(cid:3)1kVDC Isolation NDL4812SC 48 12 42 167 51 81 53 1694 NDL4815SC 48 15 33 134 51 82 65 1683 (cid:132)(cid:3)Efficiency to 83% (cid:132)(cid:3)Power density 0.9W/cm3 INPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units (cid:132)(cid:3)5V, 12V, 24V & 48V nominal input All NDL05 types 4.5 5 9 (cid:132)(cid:3)5V, 9V, 12V & 15V output All NDL12 types 9 12 18 Voltage range VDC (cid:132)(cid:3)No electrolytic capacitors All NDL24 types 18 24 36 All NDL48 types 36 48 72 (cid:132)(cid:3)Fully encapsulated All NDL05 types with 100μF at input 250 (cid:132)(cid:3)External control Reflected ripple All NDL12 types with 100μF at input 150 mA p-p current All NDL24 types with 10μF at input 300 380 (cid:132)(cid:3)Low noise All NDL48 types with 10μF at input 140 170 (cid:132)(cid:3)Fully encapsulated ABSOLUTE MAXIMUM RATINGS DESCRIPTION Short-circuit protection Continuous Lead temperature 1.5mm from case for 10 seconds 300°C The NDL series is a range of high performance Control pin input current 15mA miniature DC/DC converters having regulated out- puts over the wide temperature range of -40ºC to Input voltage 05 types 10V 85ºC. The input voltage range is 2:1 with the output Input voltage 12 types 20V power at 2 watts and the input to output isola- Input voltage 24 types 40V tion is 1kVDC. Continuous short circuit protection, Input voltage 48 types 80V external control and extremely small SIP packaging 1. Refer to power derating graph for operating of 5V input types at 4.5 to 6V. provide state of the art functionality. Nominal input 2. Measured at full load with external input/output capacitors. voltages of 5, 12, 24 and 48V with output voltages 3. Please refer to minimum load application notes section on page 3. of 5,9,12 and 15V are available as standard with 4. Calculated using MIL-HDBK-217F with nominal input voltage at full load. custom parts on request. The plastic case is rated All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. to UL94V-0 with encapsulant to UL94V-1. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support KDC_NDL.F05 Page 1 of 4

NDL Series Isolated 2W Wide Input Single Output DC/DC Converters OUTPUT CHARACTERISTICS Parameter Conditions 1 Typ. Max. Units All NDL05/12 input types with external input/output capacitors ±1 ±3 Voltage set point accuracy % All NDL24/48 input types with external input/output capacitors ±2 ±5 All NDL05/12 input types, low line to high line with external input/output capacitors 0.05 0.5 Line regulation % All NDL24/48 input types, low line to high line with external input/output capacitors 0.04 0.4 All NDL05/12 input types, minimum load to rated load with external input/output capacitors 0.2 0.75 Load regulation % All NDL24/48 input types, minimum load to rated load with external input/output capacitors 0.2 0.75 Ripple B/W = 20MHz to 300kHz with external input/output capacitors 5 10 mV rms All NDL05 input types, B/W =DC to 20MHz with external input/output capacitors 50 100 Noise All NDL12 input types, B/W =DC to 20MHz with external input/output capacitors 110 170 mV p-p All NDL24/48 input types, B/W =DC to 20MHz with external input/output capacitors 50 100 Shutdown power +VIN nominal 2.8 mW ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Isolation test voltage Flash tested for 1 second 1000 VDC Resistance VISO = 1000VDC 1 GΩ GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Control pin (CTRL) input current Please refer to control pin application note 6 10 15 mA Switching frequency Max. rated load to Min. rated load, VIN Min. to VIN. Max. 100 600 kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Operation -40 85 ºC Storage -50 130 Cooling Free air convection 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 NDL 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 NDL 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 NDL 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. 1. Refer to recommended test circuit for external input/output capacitors. www.murata-ps.com/support KDC_NDL.F05 Page 2 of 4

NDL Series Isolated 2W Wide Input Single Output DC/DC Converters APPLICATION NOTES External capacitance Although these converters will work without external capacitors, they are necessary Value in order to guarantee the full parametric performance over the full line and load Input Voltage (V) CIN COUT range. All parts have been tested and characterized using the following values and 5 & 12 100μF, 25V 100μF, 25V test circuit. 24 & 48 10μF, 200V 100μF, 25V Test circuit + V OUT Supply + VIN + VIN CIN NDL COUT Supply - V - V IN IN - V OUT Control Pin The NDL converters have a shutdown feature which enables the user to put the converter into a low power state. The control pin connects directly to the base of an internal transistor, and the switch off mechanism for the NDL works by forward biasing this NPN transistor. If the pin is left open (high impedance), the converter will be ON (there is no allowed low state for this pin), but once a control voltage is applied with sufficient drive current, the converter will be switched OFF. A suitable application circuit is shown below. D (e.g. 1N4001) is required to provide high impedence when the signal is 1 low. From the NDL specification, the drive current to operate this function NDL V is recommended to be 10mA, and hence the value of R can be derived as IN 1 follows: R 2 V - V - V V R D R = C D Q OVC 1 1 CTRL Q1 1 IC -V Assuming V=5V, V=0.7V and V=1V: IN C D Q 5 - 0.7 - 1.0 R= = 330Ω 1 10 x 10-3 Pin 8 (CS) This pin provides a connection point to the main reservoir capacitor. Additional capacitance can be added from this pin to pin 7. Any lower ESR capacitor will remove ripple and noise to some degree. The benefit of this access point over simple additional output capacitance is that it precedes the output filter inductor. Maximum values of external capacitance will be dependent on the output voltage, the loading of the converter and the desired ripple figure. Values can be up to 100μF. 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. RoHS COMPLIANT INFORMATION NDL05 POWER DERATING CURVE 2.5 2.0 This series is compatible with RoHS soldering W) systems with a peak wave solder temperature of er (11.7.55 300ºC for 10 seconds. The pin termination finish w o on this product series is Tin Plate, Hot Dipped P over Matte Tin with Nickel Preplate. The series ut 1.0 p is backward compatible with Sn/Pb soldering ut systems. O 0.5 0 4.5 5 6 7 8 9 For further information, please visit www.murata-ps.com/rohs Isolation voltage (V) www.murata-ps.com/support KDC_NDL.F05 Page 3 of 4

NDL Series Isolated 2W Wide Input Single Output DC/DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS 0.858 (21.80) Pin Function 1 -VIN 2 +VIN 0.362 (9.20) 3 CTRL 5* IC 6 +VOUT 7 -VOUT 0.437 8 CS (11.10) NDL4805SC 0.022 (0.55) * This pin is internally connected, and must have no external XYYWW 0.0178 (0.45) connection and is used for mechanical reasons. External 1 2 3 5 6 7 8 connection to anything will result in converter failure. 0.181 (4.60) 0.142 (3.60) RECOMMENDED FOOTPRINT DETAILS 0.1 (2.54) 0.022 (0.55) 0.0178 (0.45) (cid:17)(cid:15)(cid:18)(cid:1)(cid:9)(cid:19)(cid:15)(cid:22)(cid:21)(cid:10) 0.0118 (0.30) 0.0079 (0.20) 0.126 (3.20) (cid:17)(cid:15)(cid:17)(cid:21)(cid:22)(cid:1)(cid:9)(cid:18)(cid:15)(cid:18)(cid:22)(cid:10) 0.079±0.02 (cid:141)(cid:17)(cid:15)(cid:17)(cid:20)(cid:26)(cid:1)(cid:9)(cid:18)(cid:15)(cid:17)(cid:17)(cid:10) (2.01±0.50) (cid:24)(cid:1)(cid:41)(cid:48)(cid:45)(cid:38)(cid:52) Weight: 5.0g (cid:17)(cid:15)(cid:18)(cid:1)(cid:9)(cid:19)(cid:15)(cid:22)(cid:21)(cid:10) (cid:17)(cid:15)(cid:17)(cid:17)(cid:20)(cid:26)(cid:21)(cid:1)(cid:9)(cid:17)(cid:15)(cid:18)(cid:10) All dimensions in inches ±0.01 (mm ±0.25mm). All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position. All dimensions in inches ±0.01 (mm ±0.5mm). TUBE OUTLINE DIMENSIONS (cid:17)(cid:15)(cid:19)(cid:20)(cid:23)(cid:1) (cid:17)(cid:15)(cid:22)(cid:22)(cid:26)(cid:1)(cid:9)(cid:18)(cid:21)(cid:15)(cid:19)(cid:17)(cid:10) (cid:9)(cid:23)(cid:15)(cid:17)(cid:17)(cid:10) (cid:17)(cid:15)(cid:18)(cid:26)(cid:24)(cid:1)(cid:9)(cid:22)(cid:15)(cid:17)(cid:17)(cid:10) (cid:17)(cid:15)(cid:19)(cid:17)(cid:22)(cid:1)(cid:9)(cid:22)(cid:15)(cid:19)(cid:17)(cid:10) (cid:17)(cid:15)(cid:17)(cid:22)(cid:26)(cid:1)(cid:9)(cid:18)(cid:15)(cid:22)(cid:17)(cid:10) (cid:17)(cid:15)(cid:17)(cid:19)(cid:21)(cid:156)(cid:17)(cid:15)(cid:17)(cid:17)(cid:23)(cid:1) (cid:9)(cid:17)(cid:15)(cid:23)(cid:17)(cid:156)(cid:17)(cid:15)(cid:18)(cid:22)(cid:10) All dimensions in inches ±0.01 (mm ±0.5mm). Tube length : 20.47±0.079 (520mm ±2mm). Tube Quantity : 23 This product is subject to the following operating requirements Murata Power Solutions, Inc. and the Life and Safety Critical Application Sales Policy: 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Refer to: http://www.murata-ps.com/requirements/ ISO 9001 and 14001 REGISTERED 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. © 2012 Murata Power Solutions, Inc. www.murata-ps.com/support KDC_NDL.F05 Page 4 of 4