• 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 SC2446

Semtech SC2446

Dual-Phase Single or Two-Output Synchronous Step-Down Controller



  • 2-phase synchronous continuous conduction mode for high-efficiency step-down converters
  • Out-of-phase operation for low-input current ripples
  • Output source and sink currents
  • Fixed-frequency peak current-mode control
  • 75 mV/-110 mV maximum current-sense voltage
  • Synthesized MOSFET RDS(ON) current-sensing for low-cost applications
  • Optional resistor current-sensing for precise current limit
  • Dual outputs or 2-phase single output operation
  • Excellent current sharing between individual phases
  • Wide input voltage range: 4.7 V to 16 V
  • Individual soft-start, overload shutdown and enable
  • Duty cycle up to 88%
  • 0.5 V feedback voltage for low-voltage outputs
  • External reference input for DDR applications
  • Buffered VDDQ/2 output
  • Programmable frequency up to 1 MHz per phase
  • External synchronization
  • Industrial temperature range
  • 28-lead TSSOP-EDP package


  • Telecommunication power supplies
  • DDR memory power supplies
  • Graphic power supplies
  • Servers and base stations



Order Codes

  • SC2446ITETRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
  • SC2446ITSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
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