Features

?  Input Supply Range: 4.7V ～ 6V

?  Maximum Charge Current: 1.8A

?  High Efficiency Current Mode PWM Controller

?  End - Charge - Current Detection Output

?  Constant Switching Frequency for Minimum Noise

?  ±1% Charge Voltage Accuracy

?  Automatic Battery Recharge

?  Automatic Shutdown When Input Supply is Removed

?  Automatic Trickle Charging of Low Voltage Batteries

?  Battery Temperature Sensing

?  Stable with Ceramic Output Capacitor

?  SOP8/PP Package

Description

The HX6202C is a complete battery charger controller for one (4.22V) cell lithium-ion battery. The HX6202C provides a small, simple and efficient solution to fast charge Li-ion battery. An external sense resistor sets the charge current with high accuracy. An internal resistor divider and precision reference set the final float voltage to 4.22V per cell with ±1% accuracy.

When the input supply is removed, the HX6202C automatically enters a low current sleep mode, dropping the battery drain current to 4μA. After the charge cycle ends, if the battery voltage drops below 4.05V per cell, a new charge cycle will automatically begin.

The HX6202C is available in the SOP8/PP package.

Application

?  Charging Docks

?  Handheld Instruments

?  Portable Computers

Typical Application Circuit