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APR34309CAMPTRG1 Datasheet(PDF) 1 Page - Diodes Incorporated |
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APR34309CAMPTRG1 Datasheet(HTML) 1 Page - Diodes Incorporated |
1 / 11 page APR34309CA Document number: DS37672 Rev. 5 - 2 1 of 11 www.diodes.com July 2015 © Diodes Incorporated APR34309CA SECONDARY SIDE SYNCHRONOUS RECTIFICATION SWITCHER Description APR34309CA is a secondary side Combo IC, which combines an N- Channel MOSFET and a driver circuit designed for synchronous rectification (SR) in DCM operation. It also integrates output voltage detect function for primary side control system. The N-Channel MOSFET has been optimized for low gate charge, low RDS(ON), fast switching speed and body diode reverse recovery performance. The synchronous rectification can effectively reduce the secondary side rectifier power dissipation and provide high performance solution. By sensing MOSFET drain-to-source voltage, APR34309CA can output ideal drive signal with less external components. It can provide high performance solution for 5V output voltage application. Same as AP4341, APR34309CA detects the output voltage and provides a periodical signal when the output voltage is lower than a certain threshold. By fast response to secondary side voltage, APR34309CA can effectively improve the transient performance of primary side control system. The APR34309CA is available in SO-8EP package. Features • Synchronous Rectification for DCM Operation Flyback • Eliminate Resonant Ring Interference • Fast Detector of Supply Voltages • Fewest External Components Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments (Top View) 1 2 3 4 8 7 6 5 DRISR VDET AREF VCC DRAIN GND GND GND Note: The DRAIN pin of internal MOSFET is exposed PAD, which is at the bottom of IC (the dashed box). The secondary current should flow from GND(pin 6,7,8) to this exposed PAD. SO-8EP Applications • Adapters/Chargers for Cell/Cordless Phones, ADSL Modems, MP3 and Other Portable Apparatus • Standby and Auxiliary Power Supplies Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony- free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. Typical Applications Circuit + C21 + C22 APR34309CA R24 VCC AREF DRAIN DRAIN GND GND VDET DRISR RAREF C23 R21 C24 R23 GND CAREF |
Similar Part No. - APR34309CAMPTRG1 |
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Similar Description - APR34309CAMPTRG1 |
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