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LSN10A-D12 Datasheet(PDF) 3 Page - Murata Manufacturing Co., Ltd. |
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LSN10A-D12 Datasheet(HTML) 3 Page - Murata Manufacturing Co., Ltd. |
3 / 12 page Input Input Voltage Range 10.8-13.2 Volts (12V nominal) Input Current: Normal Operating Conditions See Ordering Guide Inrush Transient 0.08A2sec Standby/Off Mode 8mA Output Short-Circuit Condition 40mA average Input Reflected Ripple Current 100mAp-p Input Filter Type Capacitive (66μF) Overvoltage Protection None Reverse-Polarity Protection None Undervoltage Shutdown None On/Off Control On = open (internal pull-down) Off = +2.8V to +VIN (<3mA) Output VOUT Accuracy (50% load) ±1.25% maximum Minimum Loading No load Maximum Capacitive Load 2000μF (low ESR, OSCON) VOUT Trim Range ±10% Ripple/Noise (20MHz BW) See Ordering Guide Total Accuracy 3% over line/load/temperature Efficiency See Ordering Guide Overcurrent Detection and Short-Circuit Protection: Current-Limiting Detection Point 17 (13-23.5) Amps Short-Circuit Detection Point 98% of VOUT set SC Protection Technique Hiccup with auto recovery Short-Circuit Current 400mA average Dynamic Characteristics Transient Response (50% load step) 100μsec to ±2% of final value Start-Up Time: VIN to VOUT and On/Off to VOUT 70msec for VOUT = 1V 16msec for VOUT = 1.1V to 5V Switching Frequency: 1V/1.1V, 1.2V, 1.3 Models 105/125kHz ±10% 1.5V/1.8V, 2V Models 160/177kHz ±10% 2.5V, 3.3V, 5V Models 200kHz ±7.5% Environmental Calculated MTBF 2.3 -1.8 million hours (1VOUT to 5VOUT) Operating Temperature: (Ambient) Without Derating (Natural convection) –40 to +48/64°C (model dependent) With Derating See Derating Curves Thermal Shutdown +115°C Physical Dimensions See Mechanical Specifications Pin Dimensions/Material 0.03" (0.76mm) round copper alloy with tin plate over nickel underplate Weight 0.3 ounces (8.5g) Flamability Rating UL94V-0 Safety UL/cUL/IEC/EN 60950, CSA-C22.2 No. 234 Performance/Functional Specifications Typical @ TA = +25°C under nominal line voltage and full-load conditions unless noted. All models are tested/specified with external 22μF input/output capacitors.These caps accommodate our test equipment and may not be required to achieve specified performance in your applications. All models are stable and regulate within spec under no-load conditions. See Technical Notes and Performance Curves for details. 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). Output noise may be further reduced with the installation of additional external output filtering. See I/O Filtering and Noise Reduction. MTBF’s are calculated using Telcordia SR-332(Bellcore), ground fixed, TA = +25°C, full power, natural convection, +67°C pcb temperature. TECHNICAL NOTES Input Voltage: Continuous or transient 15 Volts On/Off Control (Pin 11) +VIN Input Reverse-Polarity Protection None Output Overvoltage Protection None Output Current Current limited. Devices can withstand sustained output short circuits without damage. Storage Temperature –40 to +125°C Lead Temperature (soldering, 10 sec.) +300°C These are stress ratings. Exposure of devices to any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied. Absolute Maximum Ratings Return Current Paths The LSN D12 SIP’s are non-isolated DC/DC converters. Their two Common pins (pins 5 and 6) are connected to each other internally (see Figure 1). To the extent possible (with the intent of minimizing ground loops), input return current should be directed through pin 6 (also referred to as –Input or Input Return), and output return current should be directed through pin 5 (also referred to as –Output or Output Return). Any on/off control signals applied to pin 11 (On/Off Control) should be referenced to Common (specifically pin 6). I/O Filtering and Noise Reduction All models in the LSN D12 Series are tested and specified with external 22μF tantalum input and output capacitors. These capacitors are necessary to accommodate our test equipment and may not be required to achieve? desired performance in your application. The LSN D12's are designed with high-quality, high-performance internal I/O caps, and will operate within spec in most applications with no additional external components. In particular, the LSN D12's input capacitors are specified for low ESR and are fully rated to handle the units' input ripple currents. Similarly, the internal output capacitors are specified for low ESR and full-range frequency response. As shown in the Performance Curves, removal of the external 22μF tantalum output caps has minimal effect on output noise. In critical applications, input/output ripple/noise may be further reduced using filtering techniques, the simplest being the installation of external I/O caps. External input capacitors serve primarily as energy-storage devices. They minimize high-frequency variations in input voltage (usually caused by IR drops in conductors leading to the DC/DC) as the switching converter draws pulses of current. Input capacitors should be selected for bulk capacitance (at appropriate frequencies), low ESR, and high rms-ripple-current ratings. The switching nature of modern DC/DC's requires that the dc input voltage source have low ac impedance at the frequencies of interest. Highly inductive source impedances can greatly affect system stability. Your specific system configuration may necessitate additional considerations. Output ripple/noise (also referred to as periodic and random deviations or PARD) may be reduced below specified limits with the installation of addi- tional external output capacitors. Output capacitors function as true filter LSN-10A D12 Models Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com MDC_LSN10A-D12.B01 Page 3 of 12 |
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