SC121
Characteristics
Over Current 1 Detection Voltage
Over Current 2(Short Current)Detection
Voltage
Symbol
Status
Min.
Typ.
Max.
Unit
VOI1
0.13
0.15
0.17
V
VOI2
VDD=3.6V
0.80
1.00
1.20
V
Over Current Reset Resistor
Charger Detection Voltage
Delay Time
R
VDD=3.6V
400
•0.8
500
•0.5
600
•0.2
kW
short
VCH
V
Over Charge Detection Delay Time
Over Discharge Detection Delay Time
Over Current 1 Detection Delay Time
Over Current 2(Short Current)Detection
Delay Time
TOC
TOD
TOI1
VDD=3.6V~4.4V
VDD=3.6V~2.0V
VDD=3.6V
150
80
5
340
200
13
500
300
20
ms
ms
ms
TOI2
VDD=3.6V
5
50
ms
Other
OC Pin Output “H” Voltage
OC Pin Output “L” Voltage
OD Pin Output “H” Voltage
Voh1
Vol1
Voh2
Vol2
VDD•0.1 V •0.02
DD
V
V
V
V
0.01
0.1
0.1
VDD•0.1 V •0.02
DD
OD Pin Output “L” Voltage
0 V battery charge starting charger
voltage
0.01
VOCHA
SC121NA
1.55
V
PIN CONFIGURATION
PIN DESCRIPTIONS
PIN No. Symbol
Description
I/O
O
I/O
O
I
1
2
3
4
5
6
OD
CSI
OC
TD
FET gate connection pin for discharge control.
Input pin for current sense, charger detect.
FET gate connection pin for charge control.
Test pin for reduce delay time.
V
DD
Positive power input pin.
I
V
SS
Negative power input pin.
I
HANGZHOU MICROELECTRONICS CO.,LTD
REV:1.6
2009.07.20
Http:// www.silan.com.cn
Page 3 of 9
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