LTC4062

U U FEATURES ■ Charge Current Programmable Up to 1A ■ Charges Single-Cell Li-Ion Batteries Directly from USB Port ■ Preset Float Voltage with ±0.35% Accuracy ■ Micropower Comparator for Battery Monitoring ■ Thermal Regulation Maximizes Charge Rate Without Risk of Overheating ■ Programmable Charge Current Detection/ Termination ■ Programmable Charge Termination Timer ■ Smart Pulsing Error Feature ■ SmartStartTM Prolongs Battery Life ■ 20µA Charger Quiescent Current in Shutdown ■ Available in a Low Profile (0.75mm) 10-Lead (3mm × 3mm) DFN Package U APPLICATIO S ■ Handheld Computers ■ Portable MP3 Players ■ Digital Cameras , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. SmartStart is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6522118. LTC4062 Standalone Linear Li-Ion Battery Charger with Micropower Comparator DESCRIPTIO The LTC®4062 is a full-featured, flexible, standalone linear charger for single-cell Lithium-Ion batteries. It is capable of operating within USB power specifications. Both programmable time and programmable current based termination schemes are available. Furthermore, the CHRG open-drain status pin can be programmed to indicate the battery charge state according to the needs of the application. A precise low power comparator is available even with no power applied as long as battery voltage is higher than 2.5V. Additional safe...