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 SC2647

Semtech SC2647

Combi-Sense™ Multi-Platform Multi-Phase PWM Controller

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Obsolete - this device is no longer available. Datasheet is for information purposes only. 

The SC2647 provides microprocessor core voltage regulation solution up to 4 paralleled PWM channels. The solution can also be configured as 2, 3, or 4-phase form. Multi-phase buck regulator utilizes the phase-shift timing control to allow interleaved switching of the power switches.


  • VRD/VRM 10.0, VRM 9.x, and K-8 compliant
  • Core voltage set point accuracy 0.5%
  • Combi-Sense™ current-mode control
  • Intrinsic phase current matching
  • Fast transient responses
  • Active droop with temperature compensation to meet load line slope
  • Support VID-on-fly with 5-bit or 6-bit VID
  • Enable function for power sequencing
  • Cycle-by-cycle peak current limit
  • Intelligent over-current shut-down
  • Over-voltage protection when using Semtech Combi-Sense™ driver with the SC1211VX
  • Under-voltage protection built in
  • External programmable soft-start
  • Externally-programmable switching frequency
  • 2-phase, 3-phase, or 4-phase configurations
  • 24-pin SOIC or TSSOP packages
  • This device is fully WEEE and RoHS Compliant


  • Voltage regulator VRD/VRM 10.x
  • Voltage regulator VRM 9.x
  • Voltage regulator K-8
  • High-current, low-voltage step-down DC/DC converters



Order Codes

  • SC2647SWTR: Package Minimum Tape & Reel Only (SOIC-24)
  • SC2647TSTR: Package Minimum Tape & Reel Only (TSSOP-24)
  • SC2647TSTRT: RoHS Compliant, Package Minimum Tape & Reel Only (TSSOP-24)
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