BATTRY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL CELL PACK

The S-8243A/B is a series of lithium-ion rechargeable battery protection ICs incorporating high-accuracy battery protection circuits, a battery monitor amp and a voltage regulator which drives microcomputer and gas gauge IC. Combining microcomputer or gas gauge IC facilitates displaying a remaining amount of battery. The S-8243A/B is suitable for protection of 3-serial or 4-serial cell 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 4)
      3.9 V to 4.4 V (50 mV step) Accuracy ±25 mV
   • Hysteresis voltage n (n=1 to 4) of overcharge detection
      −0.10 V to −0.40 V (50 mV step) or 0 V Accuracy ±50 mV
      (Overcharge release voltage n (=Overcharge detection voltage n + Hysteresis voltage n) can be
      selected within the range 3.8 V to 4.4 V.)
   • Overdischarge detection voltage n (n=1 to 4)
      2.0 V to 3.0 V (100 mV step) Accuracy ±80 mV
   • Hysteresis voltage n (n=1 to 4) of overdischarge detection
      0.20 V to 0.70 V or 0 V (100 mV step) Accuracy ±100 mV
      (Overdischarge release voltage n (=Overdischarge detection voltage n + Hysteresis voltage n) can
      be selected within the range 2.0 V to 3.4 V.)
(2) Three-level overcurrent protection including protection for short-circuiting
   • Overcurrent detection voltage 1 0.05 V to 0.3 V (50 mV step) Accuracy ±25 mV
   • Overcurrent detection voltage 2 0.5 V Accuracy ±100 mV
   • Overcurrent detection voltage 3 VDD/2 Accuracy ±15 %
(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) Charge/discharge operation can be controlled through the control pins.
(5) High-accuracy battery monitor amp GAMP = VBATTERY × 0.2 ±1.0%
(6) Voltage regulator VOUT = 3.3 V ±2.4 % (3 mA max.)
(7) High input-voltage device Absolute maximum rating: 26 V
(8) Wide operating voltage range 6 V to 18 V
(9) Wide operating temperature range: −40°C to +85 °C
(10) Low current consumption
   Operation mode 120 μA max.
   Power down mode 0.1 μA max.
(11) Small package 16-Pin TSSOP package
(12) Lead-free products

APPLICATIONs
• Lithium-ion rechargeable battery packs
• Lithium polymer rechargeable battery packs