SC191: Low Supply Ripple Synchronous Buck Conversion Regulator

The SC191 is a synchronous step-down converter with integrated power devices and an integrated front-end LDO regulator to minimize input supply ripple. If supply ripple is not a concern, the front-end LDO regulator can be bypassed externally to maximize efficiency.


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Features

  • Less than 1mV Supply Ripple
  • 2.7V to 5.5V Input Range
  • 330mA Guaranteed Output Current
  • Fixed Frequency 1MHz Operation
  • No Schottky Diode Required
  • Over-Current Protection
  • Over-Voltage Protection
  • Over-Temperature Protection
  • Soft-Start
  • No External Compensation Required
  • MLPD-8, 2.3mm x 2.3mm Package
  • WEEE and RoHS Compliant

Diagrams

Typical Application Circuit

SC191 - Typical Application Circuit

Click diagram to enlarge

Applications

  • Cell Phones
  • Cordless Phones
  • Notebook and Subnotebook Computers
  • PDAs and Mobile Communicators
  • WLAN Peripherals
  • Wireless Modules
  • 1 Li-Ion or 3 NiMH/NiCd Powered Devices

Packaging

MLP-8

Order Codes
  • SC191AWLTRT: RoHS and WEEE compliant, 3000 pcs. Tape & Reel
Order Sample Button
Pb-Free/RoHS/WEEE Status

Related Documents

Datasheets