SE9020_10 Datasheet, PDF (7/9 Pages) Seaward Electronics Inc. – Standalone Linear Lithium Battery Charger

Application Notes:
+
4.75V~6V
_
SE9020C
BAT- BAT-
GND LED1
Vin LED2
R1
BAT-
600
LED1
BAT+
R2 300
LED2
Figure #3. An Available Application. The logic of LED’s operations is shown in the table below.
Detection
Description
Battery Detection
Battery Unload
Battery Charge
Battery Full
Battery Shorted
Power Supply
Condition
Disconnected
Connected
Connected
Battery
Condition
Connected
Disconnected
Disconnected
Connected
Shorted
LED1
ON
ON
ON
ON
ON
OFF
LED2
OFF
OFF
OFF
ON
OFF
OFF
Revision 11/2/2010
Preliminary and all contents are subject to change without prior notice
© Seaward Electronics Inc., 2007. • www.seawardinc.com.cn • Page 7