K78Lxx-500R3 / DC-DC converter / 500mA current output / non-isolated / open-frame
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K78Lxx-500R3 / DC-DC converter / 500mA current output / non-isolated / open-frame - 1

DC/DC Converter K78Lxx-500R3 Series Wide input voltage , non-isolated & regulated single output  High efficiency up to 95%  No-load input current as low as 0.2mA  Operating temperature range: -40℃ to +85℃     Support the negative output Output short circuit protection Pin-out compatible with LM78XX linear regulators UL60950, EN60950 approval RoHS K78Lxx-500R3 series are high efficiency switching regulators and ideal substitutes of LM78xx series three-terminal linear regulators. The product is featured with high efficiency, low loss, short circuit protection, support the negative output and no heat sink requirement. They are widely used in industrial control, instrumentation, and electric power applications. Selection Guide Certification Output Output Voltage (VDC) Efficiency (%/Typ.) (Min. Vin)/ (Max. Vin) @Full Load Note:For input voltage higher than 30 VDC, a 22uF/50V input capacitor is required. Input Specifications Item Operating Conditions No-load Input Current Positive output Reverse Polarity Input Input Filter Capacitor filter Output Specifications Item Operating Conditions Output Voltage Accuracy Full load, input voltage range Line Regulation Full load, input voltage range Load Regulation Nominal input ,10% -100% load Ripple & Noise* 20MHz bandwidth, nominal input, 10% -100% load Temperature Drift Coefficient Transient response deviation Transient recovery time Output short circuit protection Nominal input, 25% load step change Nominal input Continuous, self-recovery Note: *1. Ripple and noise tested with “parallel cable” method, please refer to DC-DC Converter Application Notes for specific operation methods; *2. With the load lower than 10%, the maximum ripple and noise of 3.3V/5V output products will be 150mVp-p, 12V/15V output products will be 2%Vo. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyri

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K78Lxx-500R3 / DC-DC converter / 500mA current output / non-isolated / open-frame - 2

DC/DC Converter General Specifications Product Characteristic Curve Temperature Derathg Curve Positive output efficiency Vs input voltage (full load) Input voltage(V) Positive output efficiency Vs output Output current percentage(%) MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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K78Lxx-500R3 / DC-DC converter / 500mA current output / non-isolated / open-frame - 3

DC/DC Converter Negative output efficiency Vs input voltage (full load) Input voltage(V) Negative output efficiency Vs output Output current percentage(%) Design Reference 1. Typical application circuit Positive output application circuit Negative output application circuit Fig. 2 Typical application circuit Fig. 3 Positive and Negative output parallelling application circuit 1. CI and C2(C3 and C4) are required and should be connected close to the pin terminal of the module. 2. The capacitance of CI and C2(C3 and C4) refer to Sheet 1, it can be increased properly if required, and tantalum...

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K78Lxx-500R3 / DC-DC converter / 500mA current output / non-isolated / open-frame - 4

DC/DC Converter 1. Packing information please refer to Product Packing Information. Packing bag number: 58010116; 2. The max. capacitive load should be tested within the input voltage range and under full load conditions; 3. Without any special statement,all indexes are only specific to positive output application; 4. Unless otherwise specified, data in this datasheet should be tested under the conditions of Ta=25°C, humidity<75% when inputting nominal voltage and outputting rated load; 5. All index testing methods in this datasheet are based on our Company's corporate standards; 6. The...

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