• 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 SC493

Semtech SC493



The SC493 is a synchronous EcoSpeed® buck power supply controller. It features an I2C interface and a bootstrap switch in a space-saving MLPQ 3X3-20 pin package. The SC493 uses Semtech’s advanced patented adaptive on-time control architecture to provide excellent light load efficiency and fast transient
response with small external components.


  • Input supply voltage range — 3.0V to 28V
  • Controller supply voltage range — 3.0V to 5.5V
  • All ceramic solution enabled
  • I2C interface
  • Output voltage fine adjust control
  • Output voltage margining
  • Supports dynamic voltage transitions via the I2C interface
  • Programmable power-on delay time and soft-start time
  • EcoSpeed™ architecture with pseudo fixed-frequency adaptive on-time control
  • Switching frequency programmable up to 1MHz
  • Selectable power save, including ultrasonic
  • Non-synchronous start-up into pre-biased loads
  • Over-voltage/under-voltage fault protection
  • Smart power save
  • Power good Output
  • Smart drive™
  • Status register monitoring device operation
  • Ulrta-thin package — 3 x 3 x 0.6 (mm), 20 pin MLPQ-UT
  • Lead-free and halogen-free
  • WEEE and RoHS compliant
I2C — logo is a trademark of NXP B.V.


  • Printers
  • Computer peripherals


  • MLPQ-UT-20

Order Codes

  • SC493ULTRT
  • SC493EVB; SC493 Evaluation Board
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