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XINNA SEMI

XA4202 Datasheet Preview

XA4202 Datasheet

Standalone Li-Lon Switch Mode Battery Charger

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XA4202
Standalone Li-Lon Switch Mode Battery Charger
Features
Input Supply Range: 4.7V-6V
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
8-Lead SO Package
Description
The XA4202 is a complete battery charger
controller for one (4.2V) cell lithium-ion battery.
The XA4202 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 HX6202
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 XA4202 is available in the 8-lead SO
Package.
Application
Charging Docks
Handheld Instruments
Portable Computers
www.szxinna.com
1




XINNA SEMI

XA4202 Datasheet Preview

XA4202 Datasheet

Standalone Li-Lon Switch Mode Battery Charger

No Preview Available !

Typical Application
XA4202
The charge current can be set by IOUT = 0.17V/R3.
Pin Assignment
Top View
TS CHRG VIN GND
8765
1 234
EN FB PROG SW
SOP-8L
PIN
NUMBER PIN NAME
FUNCTION
1 EN
ON/OFF Control
2 FB
Feedback
3
PROG
Charge Current Program
4 SW
Switch Output
5 GND
Ground
6 VIN
Input
Open-Drain Charge Status for
7 CHRG
Output
8 TS Temperature Sense
www.szxinna.com
2


Part Number XA4202
Description Standalone Li-Lon Switch Mode Battery Charger
Maker XINNA SEMI
Total Page 11 Pages
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