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S-8253B

Seiko Instruments
Part Number S-8253B
Manufacturer Seiko Instruments
Description BATTERY PROTECTION IC
Published Jul 21, 2007
Detailed Description Rev.2.1_00 BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK S-8253A/B Series The S-8253A/B Series are protect...
Datasheet PDF File S-8253B PDF File

S-8253B
S-8253B

Overview
Rev.
2.
1_00 BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK S-8253A/B Series The S-8253A/B Series are protection ICs for 2-serial or 3-serial cell lithium-ion rechargeable batteries and include high-accuracy voltage detectors and delay circuits.
These ICs are suitable for protecting lithium-ion battery packs from overcharge, overdischarge and overcurrent.
Features (1) High-accuracy voltage detection for each cell • • Overcharge detection voltage n (n = 1 to 3) 3.
9 V to 4.
4 V (50 mV steps) Accuracy ±25 mV *1 Accuracy ±50 mV Overcharge release voltage n (n = 1 to 3) 3.
8 V to 4.
4 V *1.
Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage (Overcharge hysteresis voltage n (n = 1 to 3) can be selected as 0 V or from a range of 0.
1 V to 0.
4 V in 50 mV steps.
) • • Overdischarge detection voltage n (n = 1 to 3) 2.
0 V to 3.
0 V (100 mV steps) *2 Accuracy ±80 mV Overdischarge release voltage n (n = 1 to 3) 2.
0 V to 3.
4 V Accuracy ±100 mV *2.
Overdischarge release voltage = Overdischarge release voltage − Overdischarge hysteresis voltage (Overdischarge hysteresis voltage n (n = 1 to 3) can be selected as 0 V or from a range of 0.
2 V to 0.
7 V in 100 mV steps.
) www.
DataSheet4U.
com (2) Three-level overcurrent detection (including load short circuiting detection) • Overcurrent detection voltage 1 0.
05 V to 0.
30 V (50 mV steps) Accuracy ±25 mV • Overcurrent detection voltage 2 0.
5 V (fixed) • Overcurrent detection voltage 3 1.
2 V (fixed) Delay times (overcharge, overdischarge, overcurrent) are generated by an internal circuit (external capacitors are unnecessary).
Charge/discharge operation can be inhibited via the control pin.
0 V battery charge function available/unavailable are selectable.
High-voltage withstand devices Wide operating voltage range Wide operating temperature range Low current consumption • • Operation mode Power-down mode 28 µA max.
(+25°C) 0.
1 µA max.
(+25°C) Absolute maximum rating: 26 V 2 V to 24 V −40°C to ...


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