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IR3742 Description

The IR3742 integrated PowIRstage® is a synchronous buck gate driver IC with co-packed control and synchronous MOSFETs and Schottky diode. It is optimized internally for PCB layout, heat transfer and driver/MOSFET timing. Custom designed gate driver and MOSFET bination enables higher efficiency at lower output voltages required by cutting edge ASIC, FPGA and advanced controller.

IR3742 Key Features

  • Single input voltage range from 5V to 21V
  • Wide input voltage range from 1.0V to 21V with external VCC bias voltage
  • Integrated MOSFET drivers, Control FET, Synchronous FET with Schottky diode, bootstrap diode and the internal LDO
  • Enable input with voltage monitoring capability
  • Logic Level Tri-state PWM input
  • Thermally pensated Over Current Indicator
  • Open-drain over temperature and over current fault indication
  • Under-voltage Lockout of VCC/LDO_Out
  • Operating temp: -40°C < Tj < 125°C
  • Package size: 5mm x 6mm PQFN