LTC1265 - 1.2A, High Efficiency Step-Down DC/DC Converter

Features
  • High Efficiency: Up to 95%
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Internal 0.3 Ohms Power Switch (VIN = 10V)
  • Short-Circuit Protection
  • Low Dropout Operation: 100% Duty Cycle
  • Low-Battery Detector
  • Low 160µA Standby Current at Light Loads
  • Active-High Micropower Shutdown: IQ < 15µA
  • Peak Inductor Current Independent of Inductor Value
  • Available in 14-pin SO Package
Typical Application

Applications
  • 5V to 3.3V Conversion
  • Distributed Power Systems
  • Step-Down Converters
  • Inverting Converters
  • Memory Backup Supply
  • Portable Instruments
  • Battery-Powered Equipment
  • Cellular Telephones
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC1265CS-3.3#PBFSO-14C$4.60$3.75
LTC1265CS-3.3#TRPBFSO-14C$3.81
LTC1265CS-5#PBFSO-14C$4.60$3.75
LTC1265CS-5#TRPBFSO-14C$3.81
LTC1265CS#PBFSO-14C$4.60$3.75
LTC1265CS#TRPBFSO-14C$3.81
LTC1265IS#PBFSO-14I$5.15$4.25
LTC1265IS#TRPBFSO-14I$4.31
Demo Boards
Part NumberDescriptionPrice
DC074A-ALTC1265CS | HIGH EFFICIENCY SWITCHING REGULATOR, 2.5V@1AContact Factory
DC074A-BLTC1265CS | HIGH EFFICIENCY SWITCHING REGULATOR, 3.3V@1AContact Factory
DC074A-CLTC1265CS | HIGH EFFICIENCY SWITCHING REGULATOR, 5V@1AContact Factory
Datasheet
Design Note
Reliability Data
Related Product
LTC1265 - 1.2A, High Efficiency Step-Down DC/DC Converter
DN105 - LTC1265: A New, High Efficiency Monolithic Buck Converter
DN98 - Highly Integrated High Efficiency DC/DC Conversion
R245 Reliability Data
LTC1265 Footprints and Symbols