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The APR347 is a secondary side MOSFET driver for synchronous rectification in DCM operation.

The synchronous rectification can effectively reduce the secondary side rectifier power dissipation and provide high performance solution. By sensing primary MOSFET gate-to-source voltage, the APR347 can output ideal drive signal with less external components. It can provide high performance solution for 3.3V to 15V output voltage application.

The APR347 is available in SOT26 package.


  • Adapters/Chargers for Cell/Cordless Phones, ADSL Modems, MP3 and Other Portable Apparatus


  • Synchronous Rectification for DCM Operation Flyback
  • Eliminate Resonant Ring Interference
  • Fewest External Components

Product Specifications

Product Parameters

Internal Trigger Voltage N/A V
VCC Max 28
Operating Current 150 µA
Turn-Off Threshold Voltage -5 mV
Min On-Time (ns) N/A
Turn-Off Delay 100 ns
Drain Rating External V
Switching FET N/A

Related Content

SOT26 (SC74R)


Technical Documents

Evaluation Board

Recommended Soldering Techniques



Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Countries/Regions
APR34709SP-13 Digi-Key Electronics 3990 10/21/2020 Buy Now Europe, Asia, North America
APR347W6-7 Digi-Key Electronics 2986 10/21/2020 Buy Now Europe, Asia, North America
APR347W6-7 Mouser Electronics Inc. 5965 10/21/2020 Buy Now South America, North America, Asia, Europe, Middle East