XA4217 Charger Datasheet

XA4217 Datasheet, PDF, Equivalent


Part Number

XA4217

Description

High Accuracy Linear Li-Lon Battery Charger

Manufacture

XINNA SEMI

Total Page 10 Pages
Datasheet
Download XA4217 Datasheet


XA4217
XA4217
High Accuracy Linear Li-Lon Battery Charger
Features
Preset 8.4V Charge Voltage with 1%
Accuracy
Programmable Charge Current Up to 1A
Input Voltage:9-10V DC
Pre-Charging, the Charge Current is
adjustable
( )Ideal for Dual-Cell 8.4V Li-Ion Batteries
Constant -Current Charging, the Charge
Current is adjustable
Constant-Voltage Charging
Constant-Current/Constant-Voltage
Charging with Temperature Monitoring
Automatic Recharge
Double LEDs Charge Status Indication
Available in SOP-8L Package
Applications
Charger for Li-Ion Coin Cell Batteries
Portable MP3 Players, Wireless Headsets
Multifunction Wristwatches
Bluetooth Applications
Description
The XA4217 is a complete constant-current/
constant voltage linear charger for cell
lithium-ion batteries. Its package and low
external component count make the XA4217
ideally suited for portable applications. The
charge current can be programmed externally
with a single resistor. XA4217 determines the
charge mode by detecting the battery voltage:
Pre-charge, constant current charging, constant
voltage charging. The charge current of
pre-charging and constant –current charging is
adjustable. The XA4217 is monitored by
temperature monitor during the constant-current
and constant-voltage charging. There are two
LEDs indicate the charge mode.
The XA4217 is available in the SOP-8L package
(or upon request).
www.szxinna.com
1

XA4217
Typical Application
XA4217
Figure 1: Typical Application Circuit with Two LEDs
Condition
LED1 LED2
Battery charging ON OFF
Charge complete OFF ON
The charge current IO(REG) =VCS/RSET (VCS is usually 200mV). Note that OFF indicates the
open-drain transistor is turned off.
The reverse-blocking protection diode is optional. In addition, the reverse-leakage current of the
diode should be kept as small as possible.
www.szxinna.com
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Features XA4217 High Accuracy Linear Li-Lon Batte ry Charger Features Preset 8.4V Cha rge Voltage with 1% Accuracy Programmab le Charge Current Up to 1A Input Voltag e:9-10V DC Pre-Charging, the Charge Cur rent is adjustable ( )Ideal for Dua l-Cell 8.4V Li-Ion Batteries Constant - Current Charging, the Charge Current is adjustable Constant-Voltage Charging C onstant-Current/Constant-Voltage Chargi ng with Temperature Monitoring Automati c Recharge Double LEDs Charge Status In dication Available in SOP-8L Package Ap plications Charger for Li-Ion Coin Cell Batteries Portable MP3 Players, Wirele ss Headsets Multifunction Wristwatches Bluetooth Applications Description The XA4217 is a complete constant-current/ constant voltage linear charger for ce ll lithium-ion batteries. Its package a nd low external component count make th e XA4217 ideally suited for portable ap plications. The charge current can be p rogrammed externally with a single resi stor. XA4217 determines the charge mode by detecting the batter.
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