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LSM-0.8 Datasheet(PDF) 3 Page - Murata Manufacturing Co., Ltd. |
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LSM-0.8 Datasheet(HTML) 3 Page - Murata Manufacturing Co., Ltd. |
3 / 13 page Input Input Voltage Range 4.5 to 5.5 Volts (5V nominal) Input Current: Normal Operating Conditions See Ordering Guide Inrush Transient 0.01A2sec Standby/Off Mode 8mA Output Short-Circuit Condition 110mA average Input Reflected Ripple Current 10mAp-p Input Filter Type Capacitive (44μF) Overvoltage Protection None Reverse-Polarity Protection None Undervoltage Shutdown None On/Off Control On = open (internal pull-up to +VIN) Off = 0 to +0.8V (1ma max.) Output VOUT Accuracy (50% load) ±1% maximum Minimum Loading No load Maximum Capacitive Load 1000μF (low ESR, OSCON) VOUT Trim Range ±10% (0.8V not trimmable) 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 600mA average Dynamic Characteristics Transient Response (50% load step) 100μsec to ±2% of final value Start-Up Time: VIN to VOUT 7msec On/Off to VOUT 6msec Switching Frequency: 300kHz (+40/–50kHz) Environmental Calculated MTBF 2.3 -1.8 million hours (1VOUT to 5VOUT) Operating Temperature: (Ambient) Without Derating (Natural convection) –40 to +65/71°C (model dependent) With Derating See Derating Curves Thermal Shutdown +115°C (110 to 125°C) Physical Dimensions 1.3" x 0.53" x 0.34" (33.02 x 13.46 x 8.64 mm) Pin Dimensions/Material 0.112" x 0.062" (2.84 x 1.57mm) rectangular copper with gold plate over nickel underplate Weight 0.28 ounces (7.8g) Flammability Rating UL94V-0 Safety UL/cUL/IEC/EN 60950, CSA-C22.2 No. 60950 Performance/Functional Specifications Typical @ TA = +25°C under nominal line voltage and full-load conditions unless noted. All models 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 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 1) is designed to be driven with open-collector logic or the appli- cation of appropriate voltages (referenced to Common, pin 3). Applying a voltage to On/Off Control when no input voltage is applied to the converter may cause permanent damage. 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 6 Volts On/Off Control (Pin 1) +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.) See Reflow Solder Profile 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 I/O Filtering and Noise Reduction All models in the LSM D3 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 LSM D3'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 LSM D3'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 induc- tive source impedances can greatly affect system stability. Your specific system configuration may necessitate additional considerations. Figure 2. Measuring Input Ripple Current LSM-10A D3 Models Single Output, Non-Isolated, 3.3VIN, 0.8-2.5VOUT 10 Amp DC/DC’s in SMT Packages Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com MDC_LSM-10A D3.B01 Page 3 of 13 |
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