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 SC2441A

Semtech SC2441A

1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter

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The SC2441A is a programmable frequency dual independent or dual/multiple phase single output peak current-mode step-down switching regulator controller. It is capable of operating from 1.8V to 20V input. A 0.6A step-up converter in the SC2441A generates an auxiliary gate drive supply when VIN is below 4.5V.

Features


2-Phase Synchronous Step-down Controllers

  • 2-Phase Synchronous Continuous Conduction Mode
  • Out of Phase Operation for Low Input Current Ripple
  • Operates up to 1MHz Per Channel
  • Excellent Current Sharing Between Phases
  • Duty Cycle Up to 90%
  • 0.5V Feedback voltages for Low-Voltage Outputs
  • Starts into Pre-biased Outputs
  • Adaptive Shoot-through Protection
  • Lossless Inductor DCR Current Sensing
  • 23mV Current-limit Threshold
  • Individual Soft-start, Overload Hiccup and Enable

Step-up Regulator

  • 0.27V VCESAT Switch at 0.6A
  • Fixed frequency Current-mode Control

Common Features

  • Wide input Voltage Range: 1.8V to 20V
  • Synchronizing Frequency Equal to that of the Step-down Converters
  • 28-lead TSSOP-EDP Lead-free package, fully WEEE and RoHS compliant

Applications


  • Low voltage distributed DC-DC converters
  • Telecommunication power supplies
  • Servers and base stations

Packaging

TSSOP-28

Order Codes

  • SC2441ATETRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
 
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