APR34709 Datasheet | Diodes Incorporated

NEW PRODUCT SECONDARY SIDE SYNCHRONOUS RECTIFICATION SWITCHER Description The APR34709 is a secondary side bo IC, which bines an NChannel MOSFET and a driver circuit designed for Synchronous Rectification (SR), supports DCM and Quasi-Resonant Flyback Topologies. The N-Channel MOSFET is 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, the APR34709 can output ideal drive signal with less external ponents. Pin Assignments (Top View) AREF 1 DRISR 2 VDD 3 VCC 4 8 GND 7 GND 6 VDET 5 DRAIN It can provide high performance solution for 3.3V to 15V output voltage application. The APR34709 is available in SO-8EP package. 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 (pins 7 and 8) to this exposed PAD. SO-8EP Features - - - - Synchronous Rectification for DCM Operation Flyback Eliminate Resonant Ring Interference Fast Detector of Supply Voltages Fewest External ponents - Totally Lead-Free & Fully Ro HS pliant (Notes 1 & 2) - Halogen and Antimony Free. “Green” Device (Note 3) 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 (Ro HS), 2011/65/EU (Ro HS 2) & 2015/863/EU (Ro HS 3) pliant. 2. See https://.diodes./quality/lead-free/ 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 pounds. Typical Applications...