LTC1627 - Monolithic Synchronous Step-Down Switching Regulator

Features
  • High Efficiency: Up to 95%
  • Constant Frequency 350kHz Operation
  • 2.65V to 8.5V VIN Range
  • VOUT from 0.8V to VIN, IOUT to 500mA
  • No Schottky Diode Required
  • Synchronizable Up to 525kHz
  • Selectable Burst Mode™ Operation
  • Low Dropout Operation: 100% Duty Cycle
  • Precision 2.5V Undervoltage Lockout
  • Secondary Winding Regulation
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Low Quiescent Current: 200µA
  • Shutdown Mode Draws Only 15µA Supply Current
  • ±1.5% Reference Accuracy
  • Available in 8-Lead SO Package
Typical Application

Applications
  • Cellular Telephones
  • Portable Instruments
  • Wireless Modems
  • RF Communications
  • Distributed Power Systems
  • Scanners
  • Single and Dual Cell Lithium
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC1627CS8#PBFSO-8C$2.35$2.05
LTC1627CS8#TRPBFSO-8C$2.11
LTC1627IS8#PBFSO-8I$3.55$3.05
LTC1627IS8#TRPBFSO-8I$3.11
Demo Boards
Part NumberDescriptionPrice
DC195ALTC1627CS8 | MONOLITHIC SYCHR., STEP-DOWN REGULATOR, 2.65V to 8.5Vin, 1.8V to 3.3Vout @ 500mA$100.00
Datasheet
Application Note
Design Note
Reliability Data
LT Journal
Related Product
LTC1627 - Monolithic Synchronous Step-Down Switching Regulator
AN84 - Linear Technology Magazine Circuit Collection, Volume IV
DN201 - A New, High Efficiency, Monolithic Synchronous Step-Down Regulator Works with Single or Dual Li-Ion Batteries
R384 Reliability Data
Aug 1998 LTC1627 Monolithic Synchronous Step-Down Regulator Maximizes Single or Dual Li-Ion Battery Life
LTC1627 Footprints and Symbols