S-8243AACFT-TB-X Datasheet, PDF (1/35 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

S-8243A/B Series
www.sii-ic.com
© SII Semiconductor Corporation, 2002-2016
BATTERY PROTECTION IC
FOR 3-SERIAL OR 4-SERIAL CELL PACK
Rev.3.1_00
The S-8243A/B Series is a protection IC for lithium-ion rechargeable battery. The S-8243A Series protects 3-series, the S-8243B
Series protects 4-series cell pack from the overcharge, overdischarge, overcurrent voltages. This IC has a high-accuracy battery
protection circuit and a battery monitor amplifier, and also a voltage regulator which operates the microcomputer or gas gauge IC.
Combining this IC and a microcomputer or a gas gauge IC allows to display the amount of charge remained in a battery.
 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 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 + Overcharge 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
• Overdischarge hysteresis voltage n (n = 1 to 4) of overdischarge detection
0.15 V to 0.70 V or 0 V (50 mV step)
Accuracy ±100 mV
(Overdischarge release voltage n (= Overdischarge detection voltage n + Overdischarge 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
V_DD / 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
(6) Voltage regulator
(7) High-withstand voltage
GAMP = V_BATTERY × 0.2 ±1.0%
V_OUT = 3.3 V ±2.4 % (3 mA max.)
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
(11) Lead-free, Sn 100%, halogen-free^*1
0.1 μA max.
*1. Refer to “ Product Name Structure” for details.
 Applications
• Lithium-ion rechargeable battery packs
• Lithium polymer rechargeable battery packs
 Package
• 16-Pin TSSOP
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