8254AA

Product Details

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[ ABLIC Inc. ]

**The S-8254A Series is a protection IC for 3-serial- or 4-serial-cell

lithium-ion / lithium polymer rechargeable batteries and includes a high- accuracy voltage detector and delay circuit.**

The S-8254A Series protects both 3-serial or 4-serial cells using the SEL pin for switching.

Features

(1) High-accuracy voltage detection for each cell
● Overcharge detection
voltage n (n = 1 to 4) 3.9 V to 4.4 V (50 mV step) Accuracy ±25 mV
● Overcharge release
voltage n (n = 1 to 4) 3.8 V to 4.4 V1 Accuracy ±50 mV
● Overdischarge detection
voltage n (n = 1 to 4) 2.0 V to 3.0 V (100 mV step) Accuracy ±80 mV
● Overdischarge release
voltage n (n = 1 to 4) 2.0 V to 3.4 V2 Accuracy ±100 mV
(2) Three-level overcurrent protection
● Overcurrent detection
voltage 1 0.05 V to 0.30 V (50 mV step) Accuracy ±25 mV
● Overcurrent detection
voltage 2 0.5 V Accuracy ±100 mV
● Overcurrent detection
voltage 3 VVC1 - 1.2 V Accuracy ±300 mV
(3) Delay times for overcharge detection, overdischarge detection
and overcurrent detection 1 can be set by external capacitors
(delay times for overcurrent detection 2 and 3 are fixed internally).
(4) Switchable between a 3-serial cell and 4-serial cell using the SEL pin
(5) Charge/discharge operation can be controlled via the control pins.
(6) High-withstand voltage Absolute maximum rating : 26 V
(7) Wide operating voltage range 2 V to 24 V
(8) Wide operating temperature range -40°C to +85°C
(9) Low current consumption
● During operation 30 μA max. (±25°C)
● During power-down 0.1 μA max. (±25°C)
(10) Lead-free, Sn100%, halogen-free*3

Applications

● Lithium-ion rechargeable battery packs
● Lithium polymer rechargeable battery packs