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S-8241ABIMC-GBIT2G Datasheet(PDF) 1 Page - Seiko Instruments Inc

Part # S-8241ABIMC-GBIT2G
Description  BATTERY PROTECTION IC FOR 1-CELL PACK
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S-8241ABIMC-GBIT2G Datasheet(HTML) 1 Page - Seiko Instruments Inc

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Rev.7.6_00
BATTERY PROTECTION IC
FOR 1-CELL PACK
S-8241 Series
Seiko Instruments Inc.
1
The S-8241 Series is a series of lithium ion/lithium polymer rechargeable battery
protection ICs incorporating high-accuracy voltage detection circuits and delay
circuits.
These ICs are suitable for protection of 1-cell lithium ion/lithium polymer battery
packs from overcharge, overdischarge and overcurrent.
Features
(1)
Internal high-accuracy voltage detection circuit
• Overcharge detection voltage:
3.9 to 4.4 V (5 mV-step)
Accuracy of ±25 mV(+25
°C) and ± 30 mV(−5 to +55 °C)
• Overcharge release voltage:
3.8 to 4.4 V
*1
Accuracy of ±50 mV
• Overdischarge detection voltage: 2.0 to 3.0 V (100 mV-step)
Accuracy of ±80 mV
• Overdischarge release voltage:
2.0 to 3.4 V
*2
Accuracy of ±100 mV
• Overcurrent 1 detection voltage: 0.05 to 0.3 V (5 mV-step)
Accuracy of ±20 mV
• Overcurrent 2 detection voltage: 0.5 V (fixed)
Accuracy of ±100 mV
(2)
A high voltage withstand device is used for charger connection pins
(VM and CO pins: Absolute maximum rating = 26 V)
(3)
Delay times (overcharge: tCU; overdischarge: tDL; overcurrent 1: tlOV1; overcurrent 2: tlOV2) are generated
by an internal circuit. (External capacitors are unnecessary.)
Accuracy of ±30%
(4)
Internal three-step overcurrent detection circuit (overcurrent 1, overcurrent 2, and load short-circuiting)
(5)
Either the 0 V battery charging function or 0 V battery charge inhibiting function can be selected.
(6)
Products with and without a power-down function can be selected.
(7)
Charger detection function and abnormal charge current detection function
• The overdischarge hysterisis is released by detecting a negative VM pin voltage (typ. −1.3 V) (Charger detection
function).
• If the output voltage at DO pin is high and the VM pin voltage becomes equal to or lower than the charger detection
voltage (typ.
−1.3 V), the output voltage at CO pin goes low (Abnormal charge current detection function).
(8)
Low current consumption
• Operation:
3.0
μA typ. 5.0 μA max.
• Power-down mode: 0.1 μA max.
(9)
Wide operating temperature range:
−40 to +85 °C
(10) Small package
SOT-23-5, SNT-6A
(11) Lead-free products
*1. Overcharge release voltage = Overcharge detection voltage - Overcharge hysteresis
The overcharge hysteresis can be selected in the range 0.0, or 0.1 to 0.4 V in 50 mV steps. (However, selection
“Overcharge release voltage<3.8 V” is enabled.)
*2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis
The overdischarge hysteresis can be selected in the range 0.0 to 0.7 V in 100 mV steps. (However, selection
“Overdischarge release voltage
>3.4 V” is enabled.)
Applications
• Lithium-ion rechargeable battery packs
• Lithium- polymer rechargeable battery packs
Packages
Drawing code
Package name
Package
Tape
Reel
Land
SOT-23-5
MP005-A
MP005-A
MP005-A
SNT-6A
PG006-A
PG006-A
PG006-A
PG006-A


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