sc121na Silan, sc121na Datasheet - Page 4

• Manufacturer Part Number: sc121na
• Description: Li+ Battery Protection Circuit
• Manufacturer: Silan

Release of Power-down mode
occur, M1 is still off but it releases Power-down mode. If V
normal status.
Charger Detection
and V
Abnormal Charging Status
M2 is to be turned off.
Over Current/Short Current Detection
from CSI is larger than V
current/short current status occurred. M1 is turned off. CSI is pulled to V
Release of Over Current/Short Current Status
between V
Note: when a battery is connected to a protection IC for the first time, the IC may not enter the normal status (not
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If a charger is connected to the battery remained in Power-down mode, the voltages will become V
If a charger is connected to the battery in normal status, V
When the discharging current is too large during discharging under normal status and the voltage detected
While the protection IC remains in Over Current/Short Current status and load is removed or the impedance
A charger is connected while the battery remains in Power-down mode. If V
DD
dischargeable status). If this occurs, set the CSI pin voltage equal to the V
V
SS
>V
BAT
ODL
pins or connect a charger) to enter the normal status.
+ and V
. M1 is to be turned on and back to normal status.
BAT
OIX
- is larger than 500KΩ and V
(V
IO1
or V
IO2
) for over a certain delay time T
CSI
<V
DD
CSI
OI1
>V
<V
ODR
, M1 is to be turned on and back to normal status.
CH
occurs, M1 is to be turned on and back to
occurs over a delay time longer than TOC,
SS
by way of an internal resistor RCSIS.
OIX
CH
(T
SS
<V
IO1
CSI
voltage (short the CSI and
or T
<V
OI2
REV:1.4
IO2
), it means the over
and V
DD
Page 4 of 10
CSI
SC121
<V
2008.06.25
<V
ODR
CH