LTC1877 - High Efficiency Monolithic Synchronous Step-Down Regulator

Features
  • High Efficiency: Up to 95%
  • Very Low Quiescent Current: Only 10μA During Operation
  • 600mA Output Current at VIN = 5V
  • 2.65V to 10V Input Voltage Range
  • 550kHz Constant-Frequency Operation
  • No Schottky Diode Required
  • Low Dropout Operation: 100% Duty Cycle
  • Synchronizable from 400kHz to 700kHz
  • Selectable Burst Mode® Operation or Pulse-Skipping Mode
  • 0.8V Reference Allows Low Output Voltages
  • Shutdown Mode Draws < 1μA Supply Current
  • ±2% Output Voltage Accuracy
  • Current Mode Control for Excellent Line and Load Transient Response
  • Overcurrent and Overtemperature Protected
  • Available in 8-Lead MSOP Package
Typical Application

Applications
  • Cellular Telephones
  • Wireless Modems
  • Personal Information Appliances
  • Portable Instruments
  • Distributed Power Systems
  • Battery-Powered Equipment
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC1877EMS8#PBFMS-8E$3.43$2.90
LTC1877EMS8#TRPBFMS-8E$2.96
LTC1877IMS8#PBFMS-8I$4.87$3.41
LTC1877IMS8#TRPBFMS-8I$3.47
Demo Boards
Part NumberDescriptionPrice
DC290A-ALTC1877EMS8 Demo Board | 2.65V to 10V Input, 1.5V to 3.3Vout @ 600mA$100.00
Datasheet
Design Note
Reliability Data
LT Journal
Related Product
LTC1877 - High Efficiency Monolithic Synchronous Step-Down Regulator
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R419 Reliability Data
May 2000 Monolithic Synchronous Step-Down Regulators Pack >500mA Output Current in an MS8 Package
LTC1877 Footprints and Symbols