Switching Regulators
  • SC195F
  • 3.5MHz, 500mA Synchronous Step Down DC-DC Regulator
  • SC202F
  • 3.5MHz, 500mA Step-down Regulator with Integrated Inductor
  • SC21150
  • Tiny 1.2A Synchronous Buck Regulator
  • SC21152
  • Tiny 1.2A Synchronous Buck Regulator with Power Good
  • SC221
  • 20MHz, 650mA, X-EMI™-Enabled Synchronous Step-Down Regulator
  • SC284AQ
  • Dual Channel 2.5MHz, 1.7A Synchronous Buck Regulator
  • TS13101
  • Galvanic Isolated Latching 60V Power Load Switch
  • TS30011
  • High Efficiency 1A Current-Mode Synchronous Buck DC/DC Converter, 1MHz
Semtech SC191

Semtech SC191

Low Supply Ripple Synchronous Buck Conversion Regulator

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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.


  • 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


  • 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



Order Codes

  • SC191AWLTRT: RoHS and WEEE compliant, 3000 pcs. Tape & Reel
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