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APS39903MTR-G1 Datasheet(PDF) 2 Page - Diodes Incorporated |
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APS39903MTR-G1 Datasheet(HTML) 2 Page - Diodes Incorporated |
2 / 17 page APS39903 Document number: DS37226 Rev. 2 - 2 2 of 17 www.diodes.com October 2014 © Diodes Incorporated APS39903 A Product Line of Diodes Incorporated Typical Applications Circuit + C1 FR1 + C2 L1 TR1 D1 + FB R13 C VCC R2 R14 APS39903 CPC GND C6 R3 R4 5V/1A C3 D4~D7 L2 R12 C7 D2 + C4 D3 C5 R11 CS R1 R10 7 1 4 2 5, 6 3 Pin Descriptions Pin Number Pin Name Function 1 CPC A capacitor is connected to this pin to form a low pass filter for cable voltage drop compensation, audio noise suppression and detecting the patterns of load current to change the output voltage and current 2 FB The CV and CC regulation are realized base on the voltage sampling of this pin 3 VCC VCC supply pin for the switcher. A capacitor with low ESR should be placed as close as possible to this pin 4 CS Current senses pin of IC. The CS pin will turn off the power transistor when the CS pin voltage reaches turn off threshold. 5, 6 C This pin is connected with an internal power BJT ’s collector 7 GND The ground of the switcher |
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