S-8244 Series

www.sii-ic.com

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

(SECONDARY PROTECTION)

© SII Semiconductor Corporation, 2003-2015

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-circuiting between cells makes it possible for serial

connection of one to four cells.



Features

(1) Internal high-precision voltage detector circuit

• Overcharge detection voltage range: 3.700 V to 4.550 V: Accuracy of ± 25 mV (at +25°C)

(at a 5 mV/step)

Accuracy of

± 50 mV (at −40°C to +85°C)

• Hysteresis:

5 types

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:

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:

5 types

CMOS output active “H”

CMOS output active “L”

Pch open drain output active “L”

Nch open drain output active “H”

Nch open drain output active “L”

(CMOS / Nch open drain output for 0.045 V hysteresis models)

*1. Refer to “ Product Name Structure” for details.



Applications

• Lithium ion rechargeable battery packs (secondary protection)



Packages

• SNT-8A

• 8-Pin MSOP

• TMSOP-8