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AP1688 Datasheet(PDF) 2 Page - Diodes Incorporated |
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AP1688 Datasheet(HTML) 2 Page - Diodes Incorporated |
2 / 10 page AP1688 Document number: DS36603 Rev. 2 - 2 2 of 10 www.diodes.com February 2015 © Diodes Incorporated AP1688 A Product Line of Diodes Incorporated Pin Descriptions Pin Number Pin Name Function 1 NC No connection 2 VS Detects the negative terminal voltage of output. 3 VA Detects the average value of the negative terminal voltage of output. 4 CS Primary current sensing 5 FB The feedback voltage sensing from the auxiliary winding 6 GND Ground 7 OUT Gate driver output 8 VCC Supply voltage of gate driver and control circuits of the IC Functional Block Diagram VCC OUT CS GND FB VS Regulator & Bias S RQ ZCD Detector Input Current Shaping and Constant Current Control UVLO OVP pro UVLO - + COMP ZCD - + EA 0.1V 1.75V Peak Current Control & LEB Driver VA R S Q CV_CTRL 4 5 2 3 6 7 8 |
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