SC8201 Silan Microelectronics, SC8201 Datasheet - Page 4

• Manufacturer Part Number: SC8201
• Description: ONE-CELL LI BATTERY PROTECTION CIRCUIT
• Manufacturer: Silan Microelectronics

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Overdischarge Detection
battery voltage V
is pulled to V
(Its current consumption is lower than 0.3μA).
Release of Power-down Mode
occur, M1 is still off but it releases Power-down mode. If V
normal state.
Charge Detection
be turned on and back to normal state.
Abnormal Charging State
M2 is to be turned off.
Over Current/Short Current Detection
V
turned off. CSI is pulled to V
Release of Over Current/Short Current State
between V
Note: when a battery is connected to a protection IC for the first time, the IC may not enter the normal state (not
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OI1
When enter overdischarge state from normal state, the battery voltage can be detected from V
A charger is connected while the battery remains in Power-down mode, if V
If a charger is connected to the battery remained in Power-down mode, if V
If a charger is connected to the battery in normal state, V
When the discharging current is too large under normal state and the voltage detected from CSI is larger than
While the protection IC remains in Over Current/Short Current state and load is removed or the impedance
(V
dischargeable state). If this occurs, set the CSI pin voltage equal to the V
V
IO2
SS
) for over a certain delay time T
BAT
pins or connect a charger) to enter the normal state.
DD
+ and V
by way of internal resistor R
DD
is smaller than V
BAT
- is larger than 500KΩ and V
SS
by way of an internal resistor R
ODL
over a delay time of T
OI1
CSID
(T
IO2
. If V
), it means the over current/short current state occurred. M1 is
CSI
CSI
<V
>V
CSI
DD
OI2
OI1
<V
CSIS
>V
, the protection IC enters into Power-down mode.
, M1 is to be turned on and back to normal state.
OD
CH
ODR
.
; M1 is to be turned off. In the meanwhile, CSI
occurs over a delay time longer than T
occurs, M1 is to be turned on and back to
CSI
<V
CH
SS
CH
<V
voltage (short the CSI and
and V
CSI
REV:1.3
<V
DD
OI2
>V
and V
ODL
Page 4 of 10
DD.
SC8201
2008.06.25
, M1 is to
When the
DD
<V
OC
ODR
,