• 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 SC4508

Semtech SC4508

Buck or Buck-Boost (Inverting) Current-Mode Controller


The SC4508 is a low voltage current mode switching regulator controller that drives a P-channel power MOSFET with programmable switching frequency. It can be configured in either buck or buck boost (inverting) converters.


  • Wide input voltage range 2.7V to 15V
  • Programmable output voltage
  • Programmable switching frequency up to 1.5MHz
  • Buck or buck boost(inverting) configuration
  • Current mode control with slope compensation
  • Very low quiescent current in shutdown mode
  • Accessible reference voltage
  • MLPQ-12 package


  • Low power point of use converters
  • Single or multiple output low power converters
  • Positive and/or negative output voltage
  • DSL cards
  • Graphic cards
  • I/O cards
  • Negative bias supplies



Order Codes

  • SC4508IMLTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
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