SC2441A: 1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter

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.


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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
Order Sample Button
Pb-Free/RoHS/WEEE Status

Related Documents

Datasheets