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 SC2443

Semtech SC2443

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

Add to Watch List

The SC2443 is a high-frequency dual synchronous step-down switching power supply controller. It provides out-of-phase high-current output gate drives to all N-channel MOSFET power stages.


  • Wide input voltage range: 4.7V to 16V
  • 0.5V feedback voltage for low-voltage outputs
  • Programmable frequency up to 1 MHz per phase
  • 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
  • 75mV/-110mV maximum current sense voltage
  • Inductor DCR current-sensing for low-cost applications
  • Dual outputs or 2-phase single output operation
  • Excellent current sharing between individual phases
  • Individual soft-start, overload shutdown and enable
  • External reference input for DDR applications
  • External synchronization
  • Industrial temperature range
  • 4mm X 4mm X1mm 24-lead MLPQ package


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


Order Codes

  • SC2443MLTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape and Reel Only
- Close -
Add Product to Watch List

Please login to the mySemtech member site to add products to your personal Watch List.

If you're not registered for mySemtech, please Register now. mySemtech member benefits include pre-filled forms for quick and easy online ordering, technical support, new product information and more.