XT2054 - Silinktek

XT2054 Standalone Linear Li-Ion Battery Charger

The XT2054 is a complete constant-current /constant -voltage linear charger for single cell lithium-ion batteries. Its ThinSOT package and low external component count make the XT2054 ideally suited for portable applications. Furthermore, the XT2054 is specifically designed to work within USB power specifications. No external sense resistor is needed, and no.

Features

include charge current monitor, under-voltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage.
■ Features
 Programmable Charge Current Up to 500mA
 No MOSFET, Sense Resistor or Blocking Diode Required
 Complete Linear Charger in ThinSOT Package for single Cell Lithium-Ion Batteries
 Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating
 Charges Single Cell Li-Ion Batteries Directly from USB Port
 Preset 4.2V Charge Voltage with 1% Accuracy
 Charge Current.