PWM Controllers
  • SC1102
  • Synchronous Voltage-Mode Controller for Distributed Power-Supply Applications
  • SC1103
  • Asynchronous Voltage-Mode PWM Controller for 12 V Input
  • SC1104A
  • Not Recommended For New Designs
  • SC1104B
  • Simple, Synchronous Voltage-Mode PWM Controller
  • SC1109
  • Synchronous PWM Controller With Dual Low-Dropout Regulator Controllers
  • SC1110
  • Sink and Source DC/DC Controller For Termination Power Supply Applications
  • SC1116
  • Linear FET Controller for DDR Supplies
  • SC1175
  • Low-Power Dual Synchronous DC/DC Controller with Current-Sharing Circuitry
Semtech SC2544

Semtech SC2544

High Performance Wide Input Range Dual Synchronous Buck Controller

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The SC2544 is a high performance dual PWM controller. It is designed to convert a wide ranged input voltage down to two independent output rails. The SC2544 support “peel off ” tracking for the two outputs at start up which means the two outputs ramp up together till the one with lower output level reaching the regulation.


  • Independent dual-outputs
  • “Peel off “start up tracking Independent dual-outputs
  • Wide input voltage range: 4.5V~28V
  • Adjustable output voltage down to 0.75V
  • Flexible power sequencing with enable and power good output
  • Synchronous Buck topology with voltage mode control
  • Out of phase operation to reduce cost of input capacitor
  • 10V internal regulator for gate driver to deliver high efficiency
  • Programmable switching frequency: 100kHz~300kHz
  • Full protection: UVLO, OVP and programmable OCP
  • No need for current sense resistor
  • Low shutdown current (100nA typical)
  • 24 lead TSSOP and MLPQ packages
  • Fully WEEE and RoHS Compliant


  • Systems with 4.5V~28V input
  • Network and telecom systems



Order Codes

  • SC2544MLTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only (MLPQ-24)
  • SC2544TSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only (TSSOP-24)
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