Revision 11/2/2010

Preliminary and all contents are subject to change without prior notice

© Seaward Electronics Inc., 2007. • www.seawardinc.com.cn • Page 4

Absolute Maximum Rating

(1)

Parameter

Symbol

Value

Units

Input Supply Voltage

8

V

BAT Voltage

7

V

BAT Voltage

7

V

LED1/2/3/4

7

V

BAT Short-Circuit Duration

Continuous

Thermal Resistance, Junction-to-Ambient

100 (DIP-8)

°C/W

BAT Pin Current

250

mA

LED1/2/3/4 Current

10

mA

Maximum Junction Temperature

125

°C

Storage Temperature

-65 to +125

°C

Lead Temperature (Soldering, 10 sec)

300

°C

Operating Rating

(2)

Parameter

Symbol

Value

Units

Supply Input Voltage

+4.75 to +6

V

Junction Temperature

-40 to +85

°C

Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Input Supply Voltage

4.75

6

V

Regulated Output (Terminal)

Voltage

4.150

4.22

4.3

V

Floating Voltage

#1.

0

V

BAT Pin Current

250

mA

Short Circuit Protection Voltage

2.5

V

charging.

3

Hz

Flashing Frequency

charging completion.

6

Hz

Notes:

#1. When the battary disconnected to the charger, SE9020 disables the internal charging transistor. This will cause the Vbat to float to Vin.