S-8244AARFN-CERT2G datasheet(1/27 Pages) SII

Part #	S-8244AARFN-CERT2G

Description	BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)

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Manufacturer	SII [Seiko Instruments Inc]

Direct Link	http://www.sii.co.jp

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1 / 27 page

Rev.3.3_00

BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK

(SECONDARY PROTECTION)

S-8244 Series

Seiko Instruments Inc.

1

The S-8244 Series is used for secondary protection of lithium-ion

batteries with from one to four cells, and incorporates a high-

precision voltage detector circuit and a delay circuit. Short-circuits

between cells accommodate series connection of one to four cells.

Features

(1) Internal high-precision voltage detector circuit

• Overcharge detection voltage range :

3.70 to 4.50 V :

Accuracy of ± 25 mV (at +25

°C)

(at a 5 mV/step)

Accuracy of ± 50 mV (at -40 to +85

°C)

• Hysteresis :

5 optional models available and selectable:

0.38±0.1 V, 0.25±0.07 V, 0.13±0.04 V, 0.045±0.02 V, None

(2) High withstand voltage device :

Absolute maximum rating : 26 V

(3) Wide operating voltage range :

3.6 V to 24 V (refers to the range in which the delay circuit can

operate normally after overvoltage is detected)

(4) Delay time during detection :

Can be set by an external capacitor.

(5) Low current consumption :

At 3.5 V for each cell :

3.0

µA max. (+25 °C)

At 2.3 V for each cell :

2.4

µA max. (+25 °C)

(6) Output logic and form :

4 types

CMOS output active “H”

CMOS output active “L”

Pch open drain output active “L”

Nch open drain output active “H”

(only CMOS output for 0.045 V hysteresis models)

(7) Lead-free products

Applications

•

Lithium ion rechargeable battery packs (secondary protection)

Packages

Drawing code

Package name

Package

Tape

Reel

Land

SNT-8A

PH008-A

8-Pin MSOP

FN008-A



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S-8244AARFN-CERT2G Datasheet(PDF) 1 Page - Seiko Instruments Inc

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