S-8253A/B Series BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK www.ablicinc.com ABLIC Inc., 2003-2010 Rev.5.0 01 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 rechargeable 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 Overcharge release voltage n (n 1 to 3) 3.8 V to 4.4 V Accuracy 50 mV Overdischarge detection voltage n (n 1 to 3) 2.0 V to 3.0 V (100 mV steps) Accuracy 80 mV *2 Overdischarge release voltage n (n 1 to 3) 2.0 V to 3.4 V Accuracy 100 mV (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) (3) Delay times (Overcharge, Overdischarge, Overcurrent) are generated by an internal circuit. (External capacitors are unnecessary). (4) Charge / discharge operation can be inhibited via the control pin. (5) 0 V battery charge function available / unavailable are selectable. (6) High-voltage withstand devices Absolute maximum rating 26 V (7) Wide operating voltage range 2 V to 24 V (8) Wide operating temperature range 40C to 85C (9) Low current consumption Operation mode 28 A max. (25C) Power-down mode 0.1 A max. (25C) *3 (10) Lead-free, Sn100%, halogen-free *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.) *2. Overdischarge release voltage Overdischarge detection 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.) *3. Refer to Product Name Structure for details. Applications Lithium-ion rechargeable battery packs Lithium polymer rechargeable battery packs Package 8-Pin TSSOP 1 NOT RECOMMENDED FOR NEW DESIGNBATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK S-8253A/B Series Rev.5.0 01 Block Diagrams 1. S-8253A Series VDD DOP Oscillator, counter, controller COP VC1 95 k VMP 900 k VC2 CTLH 200 nA CTLM CTL VSS Remark All diodes shown in figure are parasitic diodes. Figure 1 2 NOT RECOMMENDED FOR NEW DESIGN