s-8242bac-i8t1g Seiko Instruments Inc., s-8242bac-i8t1g Datasheet

s-8242bac-i8t1g

Manufacturer Part Number

s-8242bac-i8t1g

Description

Battery Protection Ic For 2-serial-cell Pack

Manufacturer

Seiko Instruments Inc.

Datasheet

1.S-8242BAC-I8T1G.pdf (32 pages)

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Rev.1.9

BATTERY PROTECTION IC

FOR 2-SERIAL-CELL PACK

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10) Lead-free product

• Lithium-ion rechargeable battery packs

• Lithium polymer rechargeable battery packs

Features

Applications

Packages

SNT-8A

8-Pin TSSOP

High-accuracy voltage detection for each cell

• Overcharge detection voltage n (n = 1, 2)

• Overcharge release voltage n (n = 1, 2)

• Overdischarge detection voltage n (n = 1, 2)

• Overdischarge release voltage n (n = 1, 2)

*1. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage

*2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage

Two-level overcurrent detection (overcurrent 1, overcurrent 2)

• Overcurrent detection voltage 1

• Overcurrent detection voltage 2

Delay times (overcharge, overdischarge, overcurrent) are generated by an internal circuit (external capacitors are

unnecessary).

0 V battery charge function available/unavailable are selectable.

Charger detection function

• The overdischarge hysteresis is released by detecting negative voltage at the VM pin (−0.7 V typ.) (Charger

High-withstand voltage devices

Wide operating temperature range

Low current consumption

Operation mode

Power-down mode

Small package

detection function).

Package Name

_00

(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.)

(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.)

PH008-A

FT008-A

Package

0.05 V, 0.08 V to 0.30 V (10 mV steps)

1.2 V (fixed)

Absolute maximum rating: 28 V

−40°C to +85°C

10 µA max. (+25°C)

0.1 µA max. (+25°C)

SNT-8A, 8-Pin TSSOP

Seiko Instruments Inc.

3.9 V to 4.5 V (50 mV steps)

3.8 V to 4.5 V

2.0 V to 3.0 V (100 mV steps)

2.0 V to 3.4 V

PH008-A

FT008-E

The S-8242B Series are protection ICs for 2-serial-cell

lithium-ion/lithium

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.

Tape

Drawing Code

polymer

PH008-A

FT008-E

Reel

S-8242B Series

rechargeable

Accuracy ±25 mV

Accuracy ±50 mV

Accuracy ±100 mV

Accuracy ±15 mV

Accuracy ±300 mV

batteries

PH008-A

Land



and

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