Revision 7/23/2009

Preliminary and all contents are subject to change without prior notice.

© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 4

Typical Application

1.210V

Ictrl

Vsense

Green

Red

Vctrl

Output

Vcc

GND

200mV

20mV

Rsense

R2

R1

Ric2

Ric1

Cic1

C2

Rvc1

Cvc1

2.2nF

22pF

2.2nF

LED_G

LED_R

Vout+

Vout-

To primary

SE1052

Rout

Rled

1K

Rs

Rprm

Note 1：0 ohms of Ric2 is recommended for LED charging indication function.

Note 2：Rprm is used to correctly trigger Green and Red LED’s. Rprm=0 is recommended if SE1052 is used

to charge one Li-bat cell. Rprm ≦1K ohms is recommended if SE1052 is used to charge more than

one Li-bat cells.