• SC1102
  • 同步电压模式控制器,用于分布式电源应用
  • SC1103
  • 异步电压模式PWM控制器,12 V输入。
  • SC1104A
  • Not Recommended For New Designs
  • SC1104B
  • 简单,同步电压模式PWM控制器
  • SC1109
  • 同步PWM控制器的双低压差稳压器控制器
  • SC1110
  • 接收器和源的直流/直流电源控制器终止应用程序
  • SC1116
  • 为DDR供应 Linear FET的线性控制器
  • SC1175
  • 低功耗双同步DC-DC控制器和电流共享电路
Semtech SC419

Semtech SC419

Single Phase DC-DC Converter with Integrated Boost Diode


The SC419 is a synchronous buck power supply controller. It features a bootstrap switch in a space-saving MLPQ- 3x3mm 20-pin package. The device is highly effi cient and uses minimal PCB area. It uses pseudo-fi xed frequency adaptive on-time operation to provide fast transient response.


  • Input voltage — 3V to 28V
  • Integrated bootstrap switch
  • Smart power-save protection
  • TC compensated RDS(ON)
  • Pseudo-fi xed frequency adaptive on-time control
  • Designed for use with ceramic capacitors
  • Programmable VIN UVLO threshold
  • Enable input
  • Selectable power-save mode
  • Programmable ultra-sonic power-save
  • Internal soft-start and soft-shutdown at output
  • Internal reference — 1% tolerance
  • Over-voltage/under-voltage fault protection
  • Power good output
  • SmartDrive™
  • Lead-free 3x3mm, 20-Pin MLPQ package
  • Fully WEEE and RoHS compliant


  • Notebook, desktop, tablet, and server computers
  • Networking and telecommunication equipment
  • Printers, DSL, and STB applications
  • Embedded applications
  • Power supply modules
  • Point of load power supplies



Order Codes

  • SC419ULTRT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
  • SC419EVBL: SC419 Evaluation Board
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