SE9020C Datasheet, PDF (5/8 Pages) Seaward Electronics Inc. – Standalone Linear Lithium Battery Charger

Typical Operating Characteristics
Vbat Versus Ibat
4.4
4.2
4.0
3.8
3.6
3.4
3.2
3.0
250 200 150 100 50
0
Ibat (mA)
Application Notes:
+
4.75V~6V
_
SE9020C
1
6
2
5
3
4
SOT-23-6
LED1
BAT-
BAT+
LED2
Figure #5. Flashing 7-Color LED Application. SE9020C also supports 7-color LED applications. The
connections are shown in this schematic and the Logic of LED’s is shown in the table below.
Detection
Description
Power Supply
Condition
Battery
Condition
LED1
LED2 (7-color)
Battery Detection
Battery Unload
Disconnected
Connected
Connected
Disconnected
Disconnected
Bright
Bright
Bright
Dark
Dark
Dark
Battery Charge
Battery Full
Connected
Connected
Bright
Bright
Flash
Dark
Battery Shorted
Shorted
Dark
Dark
Revision 2/16/2009
Preliminary and all contents are subject to change without prior notice
© Seaward Electronics Inc., 2007. • www.seawardinc.com.cn • Page 5