LSN-10A D12 Models www.murata-ps.com Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages LSN Series D12 SIP's (single-in-line packages) are ideal building blocks for emerging, on-board power-distribution schemes in which isolated 12V buses deliver power to any number of non-isolated, step- down buck regulators. LSN D12 DC/DC's accept a 12V input (10.8V to 13.2V input range) and convert it, with the highest efficiency in the smallest space, to a 1, 1.1, 1.2, 1.3, 1.5, 1.8, 2, 2.5, 3.3 or 5 Volt output fully rated at 10 Amps. Features LSN D12's are ideal point-of-use/load power processors. They typi- ■ Step-down buck regulators for new cally require no external components. Their vertical-mount packages distributed 12V power architectures occupy a mere 0.7 square inches (4.5 sq. cm), and reversed pin vertical ■ 12V input (10.8-13.2V range) mount allows mounting to meet competitor's keep out area. Horizontal- mount packages ("H" suffix) are only 0.34 inches (8.6mm) high. ■ 1 to 5VOUT @ 10A The LSN's best-in-class power density is achieved with a fully ■ Non-isolated, fixed-frequency, synchronous, fixed-frequency, buck topology that also delivers: high synchronous-rectifier topology efficiency (96% for 5VOUT models), low noise (30 to 50mVp-p typ.), ■ Outstanding performance: tight line/load regulation (±0.1%/±0.25% max.), quick step response • ±1.25% setpoint accuracy (100µsec), stable no-load operation, and no output reverse conduction. • Efficiencies to 96% @ 10 Amps The fully functional LSN’s feature output overcurrent detection, • Noise as low as 30mVp-p continuous short-circuit protection, an output-voltage trim function, a remote on/off control pin (pull high to disable), thermal shutdown and a • Stable no-load operation sense pin. High efficiency enables the LSN D12's to deliver rated output • Trimmable output voltage currents of 10 Amps at ambient temperatures to +68°C with 100 lfm air ■ Remote on/off control flow. ■ Sense pin on standard models If your new system boards call for three or more supply voltages, ■ Thermal shutdown check out the economics of on-board 12V distributed power. If you don't need to pay for multiple isolation barriers, Murata Power Solutions' non- ■ No derating to +68°C with 100 lfm isolated LSN D12 SIP's will save you money. ■ UL/IEC/EN60950 certified ■ EMC compliant +OUTPUT +INPUT (1,2,4) (7,8) 10.5Ω ➀ 66µF +SENSE 100µF 330µF (3) COMMON COMMON (5) (6) CURRENT SENSE VCC PWM ON/OFF CONTROLLER REFERENCE & CONTROL VOUT ERROR AMP (11) TRIM (10) ➀ For devices with the sense-pin removed ("B" suffix), the feedback path is through the +Output pin and not the +Sense pin. Typical topology is shown For full details go to Figure 1. Simplified Schematic www.murata-ps.com/rohs www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 1 of 12 LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages ➀ Performance Specifications and Ordering Guide Output Input Efficiency Package VIN Nom. Range Root Model ➄ VOUT IOUT R/N (mVp-p) ➁ Regulation (Max.) ➂ IIN ➃ Full Load ½ Load (Case, (Volts) (Amps) (Volts) (Volts) (mA/A) Pinout) Typ. Max. Line Load Min. Typ. Typ. LSN-1/10-D12-C 1 10 45 65 ±0.1% ±0.25% 12 10.8-13.2 39/1.02 83% 86% 86% B5/B5x, P59 LSN-1.1/10-D12-C 1.1 10 45 60 ±0.1% ±0.25% 12 10.8-13.2 45/1.1 85% 88% 87.5% B5/B5x, P59 LSN-1.2/10-D12-C 1.2 10 45 60 ±0.1% ±0.275% 12 10.8-13.2 45/1.19 85% 88% 87.5% B5/B5x, P59 LSN-1.3/10-D12-C 1.3 10 45 60 ±0.1% ±0.25% 12 10.8-13.2 45/1.3 85% 88% 87.5% B5/B5x, P59 LSN-1.5/10-D12-C 1.5 10 50 70 ±0.1% ±0.3% 12 10.8-13.2 54/1.47 86% 89% 88% B5/B5x, P59 LSN-1.8/10-D12-C 1.8 10 30 45 ±0.1% ±0.4% 12 10.8-13.2 53/1.75 87% 90.5% 89.5% B5/B5x, P59 LSN-2/10-D12-C 2 10 30 45 ±0.1% ±0.25% 12 10.8-13.2 59/1.9 88.5% 91% 90% B5/B5x, P59 LSN-2.5/10-D12-C 2.5 10 35 50 ±0.1% ±0.45% 12 10.8-13.2 60/2.3 90.5% 92.5% 92% B5/B5x, P59 LSN-2.5/10-D12J-C 2.5 10 35 50 ±0.1% ±0.45% 12 10.8-13.2 60/2.3 90.5% 92.5% 92% B5/B5x, P59 LSN-2.5/10-D12J-C-CIS 2.5 10 35 50 ±0.1% ±0.45% 12 10.8-13.2 60/2.3 90.5% 92.5% 92% B5/B5x, P59 LSN-3.3/10-D12-C 3.3 10 45 75 ±0.2% ±0.45% 12 10.8-13.2 69/3 92.5% 94% 93.5% B5/B5x, P59 LSN-3.3/10-D12J-C 3.3 10 45 75 ±0.2% ±0.45% 12 10.8-13.2 69/3 92.5% 94% 93.5% B5/B5x, P59 LSN-3.3/10-D12J-C-CIS 3.3 10 45 75 ±0.2% ±0.45% 12 10.8-13.2 69/3 92.5% 94% 93.5% B5/B5x, P59 LSN-3.8/10-D12-C 3.8 10 40 55 ±0.1% ±0.25% 12 10.8-13.2 69/3.33 93% 95% N/A B5/B5x, P59 LSN-5/10-D12-C 5 10 65 100 ±0.15% ±0.25% 12 10.8-13.2 80/4.35 94% 96% 95.5% B 5/B5x, P59 *LAST TIME BUY: 3/31/2017. CLICK HERE FOR DISCONTINUANCE NOTICES. ➀ Typical at TA = +25°C under nominal line voltage and full-load conditions, unless noted. All models ➂ These devices have no minimum-load requirements and will regulate under no-load conditions. are tested and specified with external 22µF tantalum input and output capacitors. The capacitors are Regulation specifications describe the output-voltage deviation as the line voltage or load is varied necessary to accommodate our test equipment and may not be required to achieve specified perfor- from its nominal/midpoint value to either extreme. mance in your applications. See I/O Filtering and Noise Reduction. ➃ Nominal line voltage, no-load/full-load conditions. ➁ Ripple/Noise (R/N) is tested/specified over a 20MHz bandwidth and may be reduced with external ➄ These are not complete model numbers. Please refer to the Part Number Structure when ordering. filtering. See I/O Filtering and Noise Reduction for details. PART NUMBER STRUCTURE L SN - 1.8 / 10- D12 B H J - C Output Configuration: RoHS-6 L = Unipolar compliant* Low Voltage J Suffix: Reversed Pin Non-Isolated SIP Vertical Mount Nominal Output Voltage: H Suffix: 1, 1.1, 1.2, 1.3, 1.5, 1.8, 2, 2.5, 3.3 Horizontal Mount or 5 Volts Maximum Rated Output B Suffix: Current in Amps No Remote Sense (Pin 3 removed) Input Voltage Range: Note: Not all model number D12 = 10.8 to 13.2 Volts (12V nominal) combinations are available. Contact Murata Power Solutions. * Contact Murata Power Solutions availability. www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 2 of 12 LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages Performance/Functional Specifications Typical @ TA = +25°C under nominal line voltage and full-load conditions unless noted. ➀ Input Absolute Maximum Ratings Input Voltage Range 10.8-13.2 Volts (12V nominal) Input Voltage: Input Current: Continuous or transient 15 Volts Normal Operating Conditions See Ordering Guide On/Off Control (Pin 11) +VIN 2 Inrush Transient 0.08A sec Standby/Off Mode 8mA Input Reverse-Polarity Protection None Output Short-Circuit Condition ➁ 40mA average Output Overvoltage Protection None Input Reflected Ripple Current ➁ 100mAp-p Output Current Current limited. Devices can Input Filter Type Capacitive (66µF) withstand sustained output short circuits without damage. Overvoltage Protection None Storage Temperature –40 to +125°C Reverse-Polarity Protection None Lead Temperature (soldering, 10 sec.) +300°C Undervoltage Shutdown None These are stress ratings. Exposure of devices to any of these conditions may adversely On/Off Control ➁ ➂ On = open (internal pull-down) affect long-term reliability. Proper operation under conditions other than those listed in the Off = +2.8V to +VIN (<3mA) Performance/Functional Specifications Table is not implied. Output TECHNICAL NOTES VOUT Accuracy (50% load) ±1.25% maximum Minimum Loading ➀ No load Return Current Paths Maximum Capacitive Load 2000µF (low ESR, OSCON) The LSN D12 SIP’s are non-isolated DC/DC converters. Their two Common VOUT Trim Range ➁ ±10% pins (pins 5 and 6) are connected to each other internally (see Figure 1). To Ripple/Noise (20MHz BW) ➀ ➁ ➃ See Ordering Guide the extent possible (with the intent of minimizing ground loops), input return Total Accuracy 3% over line/load/temperature current should be directed through pin 6 (also referred to as –Input or Input Efficiency ➁ See Ordering Guide Return), and output return current should be directed through pin 5 (also Overcurrent Detection and Short-Circuit Protection: ➁ referred to as –Output or Output Return). Any on/off control signals applied to Current-Limiting Detection Point 17 (13-25) Amps pin 11 (On/Off Control) should be referenced to Common Short-Circuit Detection Point 98% of VOUT set (specifically pin 6). SC Protection Technique Hiccup with auto recovery Short-Circuit Current 400mA average I/O Filtering and Noise Reduction Dynamic Characteristics All models in the LSN D12 Series are tested and specified with external Transient Response (50% load step) 100µsec to ±2% of final value 22µF tantalum input and output capacitors. These capacitors are necessary 125µsec for LSN-1.2/10-D12 model to accommodate our test equipment and may not be required to achieve? Start-Up Time: ➁ VIN to VOUT and On/Off to VOUT 70msec for VOUT = 1V desired performance in your application. The LSN D12's are designed with 16msec for VOUT = 1.1V to 5V high-quality, high-performance internal I/O caps, and will operate within spec Switching Frequency: in most applications with no additional external components. 1V/1.1V, 1.2V, 1.3 Models 105/125kHz ±10% 1.5V/1.8V, 2V Models 160/177kHz ±10% In particular, the LSN D12's input capacitors are specified for low ESR 2.5V, 3.3V, 5V Models 200kHz ±7.5% and are fully rated to handle the units' input ripple currents. Similarly, the Environmental internal output capacitors are specified for low ESR and full-range frequency Calculated MTBF ➄ 2.3-1.8 million hours (1VOUT to 5VOUT) response. As shown in the Performance Curves, removal of the external 22µF tantalum output caps has minimal effect on output noise. Operating Temperature: (Ambient) ➁ Without Derating (Natural convection) –40 to +48/64°C (model dependent) In critical applications, input/output ripple/noise may be further reduced using With Derating See Derating Curves filtering techniques, the simplest being the installation of external I/O caps. Thermal Shutdown +115°C Physical External input capacitors serve primarily as energy-storage devices. They Dimensions See Mechanical Specifications minimize high-frequency variations in input voltage (usually caused by IR Pin Dimensions/Material 0.03" (0.76mm) round copper alloy with drops in conductors leading to the DC/DC) as the switching converter draws tin plate over nickel underplate pulses of current. Input capacitors should be selected for bulk capacitance Weight 0.3 ounces (8.5g) (at appropriate frequencies), low ESR, and high rms-ripple-current ratings. Flamability Rating UL94V-0 The switching nature of modern DC/DC's requires that the dc input voltage Safety UL/cUL/IEC/EN 60950, CSA-C22.2 No. 234 source have low ac impedance at the frequencies of interest. Highly inductive ➀ All models are tested/specified with external 22µF input/output capacitors.These caps source impedances can greatly affect system stability. Your specific system accommodate our test equipment and may not be required to achieve specified performance configuration may necessitate additional considerations. in your applications. All models are stable and regulate within spec under no-load conditions. ➁ See Technical Notes and Performance Curves for details. Output ripple/noise (also referred to as periodic and random deviations or ➂ The On/Off Control (pin 11) is designed to be driven with open-collector logic or the appli- cation of appropriate voltages (referenced to Common, pins 5 and 6). PARD) may be reduced below specified limits with the installation of addi- ➃ Output noise may be further reduced with the installation of additional external output filtering. See I/O Filtering and Noise Reduction. tional external output capacitors. Output capacitors function as true filter ➄ MTBF’s are calculated using Telcordia SR-332(Bellcore), ground fixed, TA = +25°C, full power, natural convection, +67°C pcb temperature. www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 3 of 12 LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages elements and should be selected for bulk capacitance, low ESR, and appro- Remote Sense priate frequency response. Any scope measurements of PARD should be LSN D12 SIP Series DC/DC converters offer an output sense function on made directly at the DC/DC output pins with scope probe ground less than pin 3. The sense function enables point-of-use regulation for overcoming 0.5" in length. moderate IR drops in conductors and/or cabling. Since these are non-isolated All external capacitors should have appropriate voltage ratings and be located devices whose inputs and outputs usually share the same ground plane, as close to the converters as possible. Temperature variations for all relevant sense is provided only for the +Output. parameters should be taken into consideration. The remote sense line is part of the feedback control loop regulating the The most effective combination of external I/O capacitors will be a function DC/DC converter’s output. The sense line carries very little current and of your line voltage and source impedance, as well as your particular load and consequently requires a minimal cross-sectional-area conductor. As such, it layout conditions. Our Applications Engineers can recommend potential solu- is not a low-impedance point and must be treated with care in layout and tions and discuss the possibility of our modifying a given device’s internal filter- cabling. Sense lines should be run adjacent to signals (preferably ground), ing to meet your specific requirements. Contact our Applications Engineering and in cable and/or discrete-wiring applications, twisted-pair or similar tech- Group for additional details. niques should be used. To prevent high frequency voltage differences between VOUT and Sense, we recommend installation of a 1000pF capacitor close to Input Fusing the converter. Most applications and or safety agencies require the installation of fuses The sense function is capable of compensating for voltage drops between the at the inputs of power conversion components. LSN D12 Series DC/DC +Output and +Sense pins that do not exceed 10% of VOUT. converters are not internally fused. Therefore, if input fusing is mandatory, [VOUT(+) – Common] – [Sense(+) – Common] ≤ 10%VOUT either a normal-blow or a slow-blow fuse with a value no greater than 9 Amps should be installed within the ungrounded input path to the converter. Power derating (output current limiting) is based upon maximum output cur- rent and voltage at the converter's output pins. Use of trim and sense func- As a rule of thumb however, we recommend to use a normal-blow or slow- tions can cause the output voltage to increase, thereby increasing output blow fuse with a typical value of about twice the maximum input current, power beyond the LSN's specified rating. Therefore: calculated at low line with the converters minimum efficiency. (VOUT at pins) x (IOUT) ≤ rated output power Safety Considerations The internal 10.5Ω resistor between +Sense and +Output (see Figure 1) LSN D12 SIP's are non-isolated DC/DC converters. In general, all DC/DC's serves to protect the sense function by limiting the output current flowing must be installed, including considerations for I/O voltages and spacing/ through the sense line if the main output is disconnected. It also prevents separation requirements, in compliance with relevant safety-agency speci- output voltage runaway if the sense connection is disconnected. fications (usually UL/IEC/EN60950). Note: Connect the +Sense pin (pin 3) to +Output (pin 4) at the DC/DC In particular, for a non-isolated converter's output voltage to meet SELV converter pins, if the sense function is not used for remote regulation. (safety extra low voltage) requirements, its input must be SELV compliant. If the output needs to be ELV (extra low voltage), the input must be ELV. On/Off Control and Power-up Sequencing Input Overvoltage and Reverse-Polarity Protection The On/Off Control pin may be used for remote on/off operation. LSN D12 SIP Series DC/DC's are designed so they are enabled when the control pin is LSN D12 SIP Series DC/DC's do not incorporate either input overvoltage left open (internal pull-down to Common) and disabled when the control pin is or input reverse-polarity protection. Input voltages in excess of the specified pulled high (+2.8V to +VIN), as shown in Figure 2 and 2a. absolute maximum ratings and input polarity reversals of longer than "instan- taneous" duration can cause permanent damage to these devices. Dynamic control of the on/off function is best accomplished with a mechanical relay or open-collector/open-drain drive circuit. The drive circuit should be Start-Up Time able to sink appropriate current when activated and withstand appropriate voltage when deactivated. The VIN to VOUT Start-Up Time is the interval between the time at which a ramping input voltage crosses the lower limit of the specified input voltage +INPUT range (10.8 Volts) and the fully loaded output voltage enters and remains within its specified accuracy band. Actual measured times will vary with input 10kΩ source impedance, external input capacitance, and the slew rate and final 4.12kΩ value of the input voltage as it appears to the converter. ON/OFF The On/Off to VOUT Start-Up Time assumes the converter is turned off via the CONTROL 1.62kΩ On/Off Control with the nominal input voltage already applied to the converter. The specification defines the interval between the time at which the converter is turned on and the fully loaded output voltage enters and remains within its COMMON specified accuracy band. See Typical Performance Curves. Figure 2. Driving the On/Off Control Pin with an Open-Collector Drive Circuit www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 4 of 12 LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages The on/off control function, however, can be externally inverted so that the The equations below can be used as starting points for selecting specific trim- converter will be disabled while the input voltage is ramping up and then resistor values. Recall, untrimmed devices are guaranteed to be ±1% accurate. "released" once the input has stabilized. Adjustment beyond the specified ±10% adjustment range is not recommended. For a controlled start-up of one or more LSN-D12's, or if several output voltages need to be powered-up in a given sequence, the On/Off Control pin can be pulled high (external pull-up resistor, converter disabled) and then +OUTPUT driven low with an external open collector device to enable the converter. +INPUT +INPUT 20kΩ TRIM 5-10 LOAD Turns 10kΩ 5.6kΩ COMMON 4.12kΩ COMMON ON/OFF CONTROL 1.62kΩ Figure 3. Trim Connections Using a Trimpot COMMON +OUTPUT Figure 2a. Inverting On/Off Control Pin Signal and Power-Up Sequencing Note: Trim +INPUT Down Install either a fixed trim-up resistor Output Overvoltage Protection TRIM LOAD or a fixed trim-down resistor depending upon LSN D12 SIP Series DC/DC converters do not incorporate output overvolt- Trim COMMON desired output voltage. Up age protection. In the extremely rare situation in which the device’s feedback COMMON loop is broken, the output voltage may run to excessively high levels (VOUT = VIN). If it is absolutely imperative that you protect your load against any and Figure 4. Trim Connections Using Fixed Resistors all possible overvoltage situations, voltage limiting circuitry must be provided external to the power converter. Trim Equations Output Overcurrent Detection 1.82(VO – 0.8) – X RT (kΩ) = DOWN VO – VO NOM Overloading the output of a power converter for an extended period of time will invariably cause internal component temperatures to exceed their 1.46 – X RT (kΩ) = UP maximum ratings and eventually lead to component failure. High-current- VO – VO NOM carrying components such as inductors, FET's and diodes are at the highest LSN-1/10-D12:  X = 0.909 risk. LSN D12 SIP Series DC/DC converters incorporate an output overcur- LSN-1.1/10-D12:  X = 2.49 rent detection and shutdown function that serves to protect both the power LSN-1.2/10-D12:  X = 3.09 converter and its load. LSN-1.3/10-D12:  X = 4.12 If the output current exceeds it maximum rating by typically 70% (17 Amps) or 4.64(VO – 0.8) – X RT (kΩ) = DOWN if the output voltage drops to less than 98% of it original value, the LSN D12's VO – VO NOM internal overcurrent-detection circuitry immediately turns off the converter, 3.72 which then goes into a "hiccup" mode. While hiccupping, the converter will – X RT (kΩ) = UP VO – VO NOM continuously attempt to restart itself, go into overcurrent, and then shut down. Under these conditions, the average output current will be approximately LSN-1.5/10-D12:  X = 13.3 400mA, and the average input current will be approximately 40mA. Once the LSN-1.8/10-D12:  X = 16.9 LSN-2/10-D12:  X = 15.4 output short is removed, the converter will automatically restart itself. 7.5(VO – 0.8) Output Voltage Trimming – X RT (kΩ) = DOWN VO – VO NOM Allowable trim ranges for each model in the LSN D12 SIP Series are ±10%. 6 – X Trimming is accomplished with either a trimpot or a single fixed resistor. The RT (kΩ) = UP VO – VO NOM trimpot should be connected between +Output and Common with its wiper LSN-2.5/10-D12:  X = 20 connected to the Trim pin as shown in Figure 3 below. LSN-3.3/10-D12:  X = 15 A trimpot can be used to determine the value of a single fixed resistor LSN-5/10-D12:  X = 10 which can then be connected, as shown in Figure 4, between the Trim pin Note: Resistor values are in kΩ. Accuracy of adjustment is subject to and +Output to trim down the output voltage, or between the Trim pin and tolerances of resistors and factory-adjusted, initial output accuracy. Common to trim up the output voltage. Fixed resistors should have absolute VO = desired output voltage. VO = nominal output voltage. TCR’s less than 100ppm/°C to ensure stability. NOM www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 5 of 12 LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages Output Reverse Conduction Many DC/DC's using synchronous rectification suffer from Output Reverse varying the load to keep that temperature below +110°C under the assorted Conduction. If those devices have a voltage applied across their output before conditions of air flow and air temperature. Once the temperature exceeds a voltage is applied to their input (this typically occurs when another power +115°C (approx.), the thermal protection will disable the converter. Automatic supply starts before them in a power-sequenced application), they will either restart occurs after the temperature has dropped below +110°C. fail to start or self destruct. In both cases, the cause is the "freewheeling" or All but the last two DUT's were vertical-mount models, and the direction of air "catch" FET biasing itself on and effectively becoming a short circuit. flow was parallel to the unit in the direction from pin 11 to pin 1. LSN D12 SIP DC/DC converters are not damaged from Output Reverse As you may deduce from the derating curves and observe in the efficiency Conduction. They employ proprietary gate drive circuitry which makes them curves on the following pages, LSN D12 SIP's maintain virtually constant immune to applied voltages during the startup sequence. If you are using efficiency from half to full load, and consequently deliver very impressive an external power source paralleled with the LSN, be aware that during the temperature performance even if operating at full load. start up phase, some low impedance condition or transient current may be Lastly, when LSN D12 SIP's are installed in system boards, they are obvi- absorbed briefly into the LSN output terminals before voltage regulation is fully established. You should insure that paralleled external power sources are ously subject to numerous factors and tolerances not taken into account here. If you are attempting to extract the most current out of these units under not disrupted by this condition during LSN start up. demanding temperature conditions, we advise you to monitor the output- Thermal Considerations and Thermal Protection inductor temperature to ensure it remains below +110°C at all times. The typical output-current thermal-derating curves shown below enable Thermal Performance for "H" Models designers to determine how much current they can reliably derive from each model of the LSN D12 SIP's under known ambient-temperature and air-flow Enhanced thermal performance can be achieved when LSN D12 SIP's are conditions. Similarly, the curves indicate how much air flow is required to mounted horizontally ("H" models) and the output inductor (with its electrically reliably deliver a specific output current at known temperatures. isolating, thermally conductive pad installed) is thermally coupled to a copper plane/pad (at least 0.55 square inches in area) on the system board. Your The highest temperatures in LSN D12 SIP's occur at their output inductor, conditions may vary, however our tests indicate this configuration delivers a 2 whose heat is generated primarily by I R losses. The derating curves were 16°C to 22°C improvement in ambient operating temperatures. See page 9 developed using thermocouples to monitor the inductor temperature and for thermal comparison of two horizontally mounted units. Typical Performance Curves for LSN D12 SIP Series LSN-1/10-D12 LSN-1/10-D12 Efficiency vs. Line Voltage and Load Current Output Current vs. Ambient Temperature (Vertical mount, air flow direction from pin 11 to pin 1) 89 12 87 10 Natural Convection 85 8 100 lfm 83 6 VIN = 10.8V 200 lfm 81 4 VIN = 12V 79 2 VIN = 13.2V 77 0 –40 060708090 100 110 Ambient Temperature (°C) 75  1 2 3 4 5 6 7 8 9 10 Load Current (Amps) www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 6 of 12 Efficiency (%) Output Current (Amps) LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages Typical Performance Curves for LSN D12 SIP Series LSN-1.1/10-D12, LSN-1.2/10-D12, LSN-1.3/10-D12 LSN-1.1/10-D12, LSN-1.2/10-D12, LSN-1.3/10-D12 Efficiency vs. Line Voltage and Load Current Output Current vs. Ambient Temperature (Vertical mount, air flow direction from pin 11 to pin 1) 91 12 89 10 87 Natural Convection 8 85 100 lfm 6 83 200 lfm VIN = 10.8V 4 81 VIN = 12V 2 79 VIN = 13.2V 77 0 –40 060708090 100 110 75 Ambient Temperature (°C) 123 45 67 89 10 Load Current (Amps) LSN-1.5/10-D12 LSN-1.5/10-D12 Efficiency vs. Line Voltage and Load Current Output Current vs. Ambient Temperature (Vertical mount, air flow direction from pin 11 to pin 1) 91 12 89 10 87 Natural Convection 8 85 100 lfm 6 83 200 lfm VIN = 10.8V 4 81 VIN = 12V 2 79 VIN = 13.2V 77 0 –40 060708090 100 110 75 Ambient Temperature (°C) 123 45 67 89 10 Load Current (Amps) LSN-1.8/10-D12 LSN-1.8/10-D12 Efficiency vs. Line Voltage and Load Current Output Current vs. Ambient Temperature (Vertical mount, air flow direction from pin 11 to pin 1) 93 12 91 10 89 Natural Convection 8 87 100 lfm 85 6 200 lfm 83 4 VIN = 10.8V 81 VIN = 12V 2 79 VIN = 13.2V 0 77 –40 060708090 100 110 75 Ambient Temperature (°C) 123 45 67 89 10 Load Current (Amps) www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 7 of 12 Efficiency (%) Efficiency (%) Efficiency (%) Output Current (Amps) Output Current (Amps) Output Current (Amps) LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages Typical Performance Curves for LSN D12 SIP Series LSN-2/10-D12 LSN-2/10-D12 Efficiency vs. Line Voltage and Load Current Output Current vs. Ambient Temperature (Vertical mount, air flow direction from pin 11 to pin 1) 93 12 91 10 89 Natural Convection 8 87 100 lfm 85 6 200 lfm 83 VIN = 10.8V 4 81 VIN = 12V 2 79 VIN = 13.2V 0 77 –40 05060708090 100 110 75 Ambient Temperature (°C) 123 45 67 89 10 Load Current (Amps) LSN-2.5/10-D12 LSN-2.5/10-D12 Efficiency vs. Line Voltage and Load Current Output Current vs. Ambient Temperature (Vertical mount, air flow direction from pin 11 to pin 1) 94 12 92 10 90 Natural Convection 88 8 86 100 lfm 6 84 200 lfm VIN = 10.8V 82 4 VIN = 12V 80 2 VIN = 13.2V 78 0 76 –40 05060708090 100 110 74 Ambient Temperature (°C) 123 45 67 89 10 Load Current (Amps) LSN-3.3/10-D12 LSN-3.3/10-D12 Efficiency vs. Line Voltage and Load Current Output Current vs. Ambient Temperature (Vertical mount, air flow direction from pin 11 to pin 1) 95 12 93 10 91 Natural Convection 89 8 100 lfm 87 6 85 200 lfm VIN = 10.8V 4 83 VIN = 12V 81 2 VIN = 13.2V 79 0 77 –40 05060708090 100 110 75 Ambient Temperature (°C) 123 45 67 89 10 Load Current (Amps) www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 8 of 12 Efficiency (%) Efficiency (%) Efficiency (%) Output Current (Amps) Output Current (Amps) Output Current (Amps) LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages Typical Performance Curves for LSN D12 SIP Series LSN-5/10-D12 LSN-5/10-D12 Efficiency vs. Line Voltage and Load Current Output Current vs. Ambient Temperature (Vertical mount, air flow direction from pin 11 to pin 1) 98 12 96 10 94 Natural Convection 8 92 100 lfm 6 90 200 lfm VIN = 10.8V 4 88 VIN = 12V 2 86 VIN = 13.2V 84 0 –40 0405060708090 100 82 Ambient Temperature (°C) 123 45 67 89 10 Load Current (Amps)  LSN-5/10-D12H (Horizontal Mount) LSN-1/10-D12H (Horizontal Mount) Output Current vs. Ambient Temperature Output Current vs. Ambient Temperature (Air flow direction from pin 11 to pin 1) (Air flow direction from pin 11 to pin 1) 12 12 10 10 Natural Convection Natural Convection 8 8 100 lfm 100 lfm 6 6 200 lfm 200 lfm 4 4 2 2 0 0 –40 0405060708090 100 –40 05060708090 100 110 Ambient Temperature (°C) Ambient Temperature (°C) Input Reflected Ripple Current Input Inrush Current (VIN = 12V, VOUT = 5V/10A, CIN/COUT = 22µF) (VIN = 12V, 7000µF as Input Switch) 2µsec/div 10µsec/div www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 9 of 12 Output Current (Amps) 20A/div Efficiency (%) Output Current (Amps) Output Current (Amps) 20mA/div LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages Typical Performance Curves for LSN D12 SIP Series Power-Up From VIN Power-Up From VIN (VIN = 12V, VOUT = 5V/10A, CIN = 22µF, COUT = 2000µF OSCON) (VIN = 12V, VOUT = 5V/10A, CIN = 22µF, Output Filter 22µF-700nH-150µF) 4msec/div 4msec/div Output Ripple Noise Output Ripple/Noise (VIN = 12V, VOUT = 5V, Full Load, COUT = 22µF) (VIN = 12V, VOUT = 5V, Full Load, COUT = 2000µF OSCON) 1µsec/div 1µsec/div Dynamic Load Response Dynamic Load Response (VIN = 12V, VOUT = 5V/50 to 100% Load Step, CIN/COUT = 22µF) (VIN = 12V, VOUT = 5V, 0 - 100% Load Step, CIN = 22µF, COUT = 2000µF OSCON) Channel 2 Channel 2 Channel 1 Channel 1 100µs/div 100µs/div www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 10 of 12 20mV/div 10mV/div Channel 1: 2V/div Channel 2: 5V/div 50mV/div 10mV/div Channel 1: 2V/div Channel 2: 5V/div LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages Typical Performance Curves for LSN D12 SIP Series Short Circuit Output Current Output Hiccup (10A/div, Period = 72msec) (VIN = 12V/Output Short, CIN/COUT = 22µF) (IIN = 39mA average, IOUT = 408mA average) 400µsec/div 20msec/div EMI CONDUCTED/RADIATED EMISSIONS LSN-5/10-D12 Radiated Emissions EN55022 Class B, 10 Meters Converter Output = +5Vdc @ +10 Amps If you’re designing with EMC in mind, please note that all of Murata Power 80 Solutions' LSN D12 DC/DC Converters have been characterized for conducted and radiated emissions in our EMI/EMC laboratory. Testing is 70 conducted in an EMCO 5305 GTEM test cell utilizing EMCO automated EMC 60 test software. Conducted/Radiated emissions are tested to the limits of FCC 50 Part 15, Class B and CISPR 22 (EN 55022), Class B. Correlation to other EN 55022 Class B Limit 40 specifications can be supplied upon request. The corresponding emissions plots to FCC and CISPR 22 for model LSN-5/10-D12 appear below. The 30 published EMC test report is based on results with the highest possible 20 output power model and is therefore representative of the whole LSN-D12 10 series. Contact Murata Power Solutions' Applications Engineering Depart- 0 ment for more details. Radiated Emissions –10 LSN-5/10-D12 Conducted Emissions –20 FCC Part 15 Class B, EN55022 Class B Limit, +12 Vdc @ 4.5A 100 1000 Converter Output = +5Vdc @ 10 Amps Frequency (MHz) 100 90 LSN-5/10-D12 Radiated Emissions FCC Part 15 Class B, 3 Meters 80 Converter Output = +5Vdc @ 10 Amps 70 80 EN55022 Class B Limit 60 70 FCC Class B Limit 60 50 FCC Class B Limit 50 40 40 30 30 20 20 Conducted Emissions 10 10 0 0 0.1 1.0 10.0 Radiated Emissions Frequency (MHz) –10 –20 100 1000 Frequency (MHz) www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 11 of 12 Conducted Emissions (dBµV/M) 10A/div Radiated Emissions (dBµV/M) Radiated Emissions (dBµV/M) 1V/div LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages PART NUMBER STRUCTURE Functional Options Remote Sense Pin Removed ("B" suffix) L SN - 1.8 / 10- D12 B H J - C These devices have their +Sense pin (pin 3) removed, and the feedback Output loop is closed through the +VOUT path. The 10.5Ω resistor in Figure 1 is Configuration: RoHS installed in both standard and "B" models. See the Output Sense Function. L = Unipolar compliant Low Voltage Horizontal Mounting ("H" suffix) J Suffix: Reversed Pin Non-Isolated SIP This packaging configuration reduces above-board height to 0.35" (8.89mm), Vertical Mount including the isolating pad. For "H" models, a thermally conductive, electri- Nominal Output Voltage: H Suffix: 1, 1.1, 1.2, 1.3, 1.5, 1.8, 2, 2.5, 3.3 or cally insulating "pad" is factory installed on the output inductor. The pad Horizontal Mount 5 Volts material is Bergquist Sil Pad 400. The pad size is 0.4 x 0.5 x 0.009 inches Maximum Rated Output B Suffix: (10.16 x 12.7 x 0.23mm). This configuration can significantly improve thermal Current in Amps No Remote Sense performance. See Thermal Derating for details. (Pin 3 removed) Reversed pin vertical mounting ("J" suffix) Note: Not all model number Input Voltage Range: combinations are available. D12 = 10.8 to 13.2 Volts (12V nominal) This additional mechanical configuration consists of a low-profile pin header Contact Murata Power Solutions attached to the reverse side of the converter. It allows the LSN series to be mechanically compatible with competitors' "keep out area." RoHS compliance ("-C" suffix) Other Options and Modifications Selected models use materials which are compatible with the Reduction of Hazardous Substances (RoHS) directive. Other options include a positive polarity (pull low to disable) on the On/Off Control. Contact Murata Power Solutions directly to discuss these and other Contact Murata Power Solutions for availability. possible modifications. Examples LSN-1.8/10-D12 Vertical-mount. Sense function on pin 3. No pin 9. LSN-1.8/10-D12B Vertical-mount. Pin 3 (+Sense) removed. No pin 9. LSN-1.8/10-D12H Horizontal-mount. Sense function on pin 3. No pin 9. LSN-1.8/10-D12BH Horizontal-mount. Pin 3 (+Sense) removed. No pin 9. LSN-1.8/10-D12J Reverse pin vertical-mount. Sense function on pin 3. No pin 9. www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 12 of 12 LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages MECHANICAL SPECIFICATIONS 0.34 (8.64) 2.00 0.20 (50.80) (5.08) 0.17 0.55 (4.32) (13.97) 12 34 5 68 7 91011 0.110 0.030 ±0.001 DIA. 0.05 (2.79) (0.762 ±0.025) (1.27) 1.000 0.400 0.500 0.046 (10.16) (25.40) (12.70) (1.17) 4 EQ. SP. @ 5 EQ. SP. @ 0.100 (2.54) 0.100 (2.54) Case B5 0.34 LAYOUT PATTERN Vertical Mounting TOP VIEW (8.64) (Standard) 0.25 (6.35) 0.36 0.35 (9.14) (8.89) 2.00 0.20 2.00 (50.80) 0.21 (50.80) (5.08) (5.33) 0.17 ISOLATING 0.05 0.55 (4.32) (1.27) 0.55 PAD (13.97) 1 2 3 4 5 6 7 8 9 10 11 (13.97) 12 34 5 68 7 91011 0.16 0.030 ±0.001 DIA. 0.05 0.046 (4.06) 0.030 ±0.001 DIA. 0.05 (0.762 ±0.025) (1.17) (1.27) (0.762 ±0.025) (1.27) 0.360 0.400 1.000 0.500 0.106 (9.14) 0.400 1.000 0.500 (10.16) (25.40) (12.70) (2.69) (10.16) (25.40) (12.70) 4 EQ. SP. @ 5 EQ. SP. @ 4 EQ. SP. @ 5 EQ. SP. @ 0.100 (2.54) 0.100 (2.54) 0.100 (2.54) 0.100 (2.54) 0.56 0.53 Case B5B Case B5A (14.22) (13.46) LAYOUT PATTERN 0.36 0.306 Horizontal Mounting Reverse Pin TOP VIEW (9.14) (7.8) Vertical Mounting (Tyco-compatible) 0.55 0.50 (13.97) I/O Connections (12.7) Pin Function P59* Pin Function P59* Pin Function P59* LAYOUT PATTERN 1 +Output 5 Common 9 No Pin RECOMMENDED TOP VIEW 2 +Output 6 Common 10 VOUT Trim COPPER PAD * Pin 3 (+Sense) removed ON PCB (0.55 SQ. IN.) 3 +Sense * 7 +Input 11 On/Off Control for "B" suffix models. DIMENSIONS IN INCHES (mm) 4 +Output 8 +Input This product is subject to the following operating requirements Murata Power Solutions, Inc. and the Life and Safety Critical Application Sales Policy: 129 Flanders Road, Westborough, MA 01581 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. © 2018 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_LSN10A-D12.F03 Page 13 of 12