S-8250B Series
BATTERY PROTECTION IC FOR 1-CELL PACK
www.ablicinc.com
© ABLIC Inc., 2013-2016
Rev.1.1
_03
The S-8250B Series is a protection IC for 1-cell lithium-ion / lithium polymer rechargeable batteries and includes
high-accuracy voltage detection circuits and delay circuits.
The S-8250B Series is suitable for protecting 1-cell lithium-ion / lithium polymer rechargeable battery packs from overcharge,
overdischarge and overcurrent. By adjusting power supply voltage dependency of discharge overcurrent detection voltage in
accordance with ON resistance of the charge-discharge control FET, the S-8250B Series realizes high-accuracy discharge
overcurrent detection.
Features
High-accuracy discharge overcurrent detection circuit
Discharge overcurrent detection voltage 0.050 V to 0.150 V (1 mV step)
Accuracy
10
mV (Ta =
25°C)
(Power supply voltage dependency can be set in accordance with ON resistance of the charge-discharge control FET.)
High-accuracy voltage detection circuit
Overcharge detection voltage
4.100 V to 4.600 V (5 mV step)
Accuracy
20
mV (Ta =
25°C)
Accuracy
25
mV (Ta =
10°C
to
60°C)
*1
Overcharge release voltage
3.700 V to 4.600 V
Accuracy
30
mV
Overdischarge detection voltage
2.000 V to 2.800 V (10 mV step)
Accuracy
50
mV
*2
Accuracy
100
mV
Overdischarge release voltage
2.000 V to 3.000 V
Load short-circuiting detection voltage
0.250 V to 0.500 V (50 mV step)
Accuracy
50
mV
Charge overcurrent detection voltage
0.200
V to
0.025
V (25 mV step)
Accuracy
15
mV
Detection delay times are generated only by an internal circuit (External capacitors are unnecessary).
0 V battery charge function is selectable:
Available, unavailable
Power-down function is selectable:
Available, unavailable
Release condition of discharge overcurrent status is selectable:
Load disconnection, charger connection
High-withstand voltage:
VM pin and CO pin: Absolute maximum rating 28 V
Wide operation temperature range:
Ta =
40°C
to
85°C
Low current consumption
During operation:
2.0
A
typ., 4.0
A
max. (Ta =
25°C)
During power-down:
50 nA max. (Ta =
25°C)
Lead-free (Sn 100%), halogen-free
*1.
Overcharge release voltage = Overcharge detection voltage
Overcharge hysteresis voltage
(Overcharge hysteresis voltage can be selected from a range of 0 V to 0.4 V in 50 mV step.)
*2.
Overdischarge release voltage = Overdischarge detection voltage
Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage can be selected from a range of 0 V to 0.7 V in 100 mV step.)
Applications
Lithium-ion rechargeable battery pack
Lithium polymer rechargeable battery pack
Package
SNT-6A
1
Rev.1.1
_03
Product Name Structure
1. Product name
S-8250B
xx
-
I6T1
U
BATTERY PROTECTION IC FOR 1-CELL PACK
S-8250B Series
Environmental code
U:
Lead-free (Sn 100%), halogen-free
Package abbreviation and IC packing specifications
I6T1: SNT-6A, Tape
Serial code
Sequentially set from AA to ZZ
*1.
Refer to the tape drawing.
*2.
Refer to "3.
Product name list".
*2
*1
2. Package
Table 1 Package Drawing Codes
Package Name
SNT-6A
Dimension
PG006-A-P-SD
Tape
PG006-A-C-SD
Reel
PG006-A-R-SD
Land
PG006-A-L-SD
3
Rev.1.1
_03
BATTERY PROTECTION IC FOR 1-CELL PACK
S-8250B Series
Table 3
Overcharge
Detection
Delay Time
[t
CU
]
1.0 s
1.0 s
1.0 s
1.0 s
1.0 s
Overdischarge
Detection
Delay Time
[t
DL
]
32 ms
64 ms
64 ms
32 ms
64 ms
Discharge
Overcurrent
Detection
Delay Time
[t
DIOV
]
8 ms
8 ms
16 ms
16 ms
16 ms
Load
Short-circuiting
Detection
Delay Time
[t
SHORT
]
280
s
280
s
280
s
280
s
280
s
Charge
Overcurrent
Detection
Delay Time
[t
CIOV
]
8 ms
8 ms
8 ms
16 ms
16 ms
Delay Time
Combination
(1)
(2)
(3)
(4)
(5)
Remark
The delay times can be changed within the range listed in
Table 4.
For details, please contact our sales office.
Table 4
Delay Time
Overcharge detection delay time
Overdischarge detection delay time
Discharge overcurrent detection delay time
Load short-circuiting detection delay time
Charge overcurrent detection delay time
Symbol
t
CU
t
DL
t
DIOV
t
SHORT
t
CIOV
Selection Range
256 ms
32 ms
8 ms
280
s
*1
8 ms
512 ms
64 ms
16 ms
*1
530
s
16 ms
*1
1.0 s
*1
128 ms
*1
32 ms
32 ms
Remark
Select a value from the left.
Select a value from the left.
Select a value from the left.
Select a value from the left.
Select a value from the left.
*1.
This value is the delay time of the standard products.
Table 5
Function Combination
(1)
(2)
(3)
(4)
0 V Battery Charge
Function
*1
Available
Unavailable
Unavailable
Available
Power-down Function
*2
Unavailable
Unavailable
Available
Available
Release Condition
of Discharge Overcurrent Status
*3
Load disconnection
Load disconnection
Load disconnection
Load disconnection
*1.
0 V battery charge function "available" / "unavailable" is selectable.
*2.
Power-down function "available" / "unavailable" is selectable.
*3.
Release condition of discharge overcurrent status "load disconnection" / "charger connection" is selectable.
Remark
Please contact our sales office for the products with function combinations other than those specified above.
5
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