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S8252 Datasheet, PDF (1/35 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK | |||
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S-8252 Series
www.sii-ic.com
© Seiko Instruments Inc., 2011-2015
BATTERY PROTECTION IC
FOR 2-SERIAL-CELL PACK
Rev.3.1_01
The S-8252 Series is a protection IC for 2-serial-cell lithium-ion / lithium polymer rechargeable batteries and includes high-
accuracy voltage detection circuits and delay circuits.
The S-8252 Series is suitable for protecting 2-serial-cell rechargeable lithium-ion / lithium polymer battery packs from
overcharge, overdischarge, and overcurrent.
ï® Features
⢠High-accuracy voltage detection function for each cell
Overcharge detection voltage n (n = 1, 2) 3.550 V to 4.600 V (5 mV steps) Accuracy ±20 mV (Ta = +25°C)
Overcharge release voltage n (n = 1, 2)
3.150 V to 4.600 V*1
Accuracy ±25 mV (Ta = â10°C to +60°C)
Accuracy ±30 mV
Overdischarge detection voltage n (n = 1, 2) 2.00 V to 3.00 V (10 mV steps)
Overdischarge release voltage n (n = 1, 2) 2.00 V to 3.40 V*2
Accuracy ±50 mV
Accuracy ±100 mV
Discharge overcurrent detection voltage
0.05 V to 0.40 V (10 mV steps) Accuracy ±10 mV
Load short-circuiting detection voltage
0.5 V (fixed)
Accuracy ±100 mV
Charge overcurrent detection voltage
â0.40 V to â0.05 V (25 mV steps) Accuracy ±20 mV
⢠Charge overcurrent detection function "available" / "unavailable" is selectable.
⢠Detection delay times are generated only by an internal circuit (external capacitors are unnecessary).
Accuracy ±20%
⢠High-withstand voltage device is used for charger connection pins
(VM pin and CO pin: Absolute maximum rating = 28 V)
⢠0 V battery charge function "available" / "unavailable" is selectable.
⢠Power-down function "available" / "unavailable" is selectable.
⢠Wide operation temperature range
Ta = â40°C to +85°C
⢠Low current consumption
During operation
8.0 μA max. (Ta = +25°C)
During power-down
0.1 μA max. (Ta = +25°C)
⢠Lead-free (Sn 100%), halogen-free
*1. Overcharge release voltage = Overcharge detection voltage â Overcharge hysteresis voltage
(Overcharge hysteresis voltage n (n = 1, 2) can be selected as 0 V or from a range of 0.10 V to 0.40 V in 50 mV
steps.)
*2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage n (n = 1, 2) can be selected as 0 V or from a range of 0.1 V to 0.7 V in 100 mV
steps.)
ï® Applications
⢠Lithium-ion rechargeable battery pack
⢠Lithium polymer rechargeable battery pack
ï® Packages
⢠SOT-23-6
⢠SNT-6A
Seiko Instruments Inc.
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