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S-8242BAE-I8T1G Datasheet(PDF) 1 Page - Seiko Instruments Inc

Part # S-8242BAE-I8T1G
Description  BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S-8242BAE-I8T1G Datasheet(HTML) 1 Page - Seiko Instruments Inc

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Rev.1.4_00
BATTERY PROTECTION IC
FOR 2-SERIAL-CELL PACK
S-8242B Series
Seiko Instruments Inc.
1
The S-8242B Series are protection ICs for 2-serial-cell
lithium-ion/lithium polymer rechargeable batteries and
include high-accuracy voltage detectors and delay circuits.
These ICs are suitable for protecting 2-cell rechargeable
lithium-ion / lithium polymer battery packs from overcharge,
overdischarge, and overcurrent.
Features
(1)
High-accuracy voltage detection for each cell
• Overcharge detection voltage n (n = 1, 2)
3.9 V to 4.5 V (50 mV steps)
Accuracy
±25 mV
• Overcharge release voltage n (n = 1, 2)
3.8 V to 4.5 V
*1
Accuracy
±50 mV
• Overdischarge detection voltage n (n = 1, 2)
2.0 V to 3.0 V (100 mV steps)
Accuracy
±50 mV
• Overdischarge release voltage n (n = 1, 2)
2.0 V to 3.4 V
*2
Accuracy
±100 mV
*1. Overcharge release voltage
= Overcharge detection voltage − Overcharge hysteresis voltage
(Overcharge hysteresis voltage n (n
= 1, 2) 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, 2) can be selected as 0 V or from a range of 0.1 V to
0.7 V in 100 mV steps.)
(2)
Two-level overcurrent detection (overcurrent 1, overcurrent 2)
• Overcurrent detection voltage 1
0.05 V, 0.08 V to 0.30 V (10 mV steps)
Accuracy
±15 mV
• Overcurrent detection voltage 2
1.2 V (fixed)
Accuracy
±300 mV
(3)
Delay times (overcharge, overdischarge, overcurrent) are generated by an internal circuit (external capacitors are
unnecessary).
(4)
0 V battery charge function available/unavailable are selectable.
(5)
Charger detection function
• The overdischarge hysteresis is released by detecting negative voltage at the VM pin (−0.7 V typ.) (Charger
detection function).
(6)
High-withstanding-voltage devices
Absolute maximum rating: 28 V
(7)
Wide operating temperature range
−40°C to +85 °C
(8)
Low current consumption
Operation mode
10
µA max. (+25°C)
Power-down mode
0.1
µA max. (+25°C)
(9)
Small package
SNT-8A, 8-Pin TSSOP
(10) Lead-free products
Applications
• Lithium-ion rechargeable battery packs
• Lithium polymer rechargeable battery packs
Packages
Package Name
Drawing Code
Package
Tape
Reel
Land
SNT-8A
PH008-A
PH008-A
PH008-A
PH008-A
8-Pin TSSOP
FT008-A
FT008-E
FT008-E


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