BATTERY PROTECTION IC

FOR 1-CELL PACK

S-8211D Series

Seiko Instruments Inc.

1

The S-8211D Series are protection ICs for single-cell lithium-ion

/ lithium-polymer rechargeable batteries and include high-

accuracy voltage detectors and delay circuits.

These ICs are suitable for protecting single-cell rechargeable

lithium-ion / lithium-polymer battery packs from overcharge,

overdischarge, and overcurrent.

Features

(1) High-accuracy voltage detection circuit

• Overcharge detection voltage

3.9 to 4.4 V (5 mV steps)

Accuracy

±25 mV (+25 °C)

Accuracy

±30 mV (−5 to +55 °C)

• Overcharge release voltage

3.8 to 4.4 V

*1

Accuracy

±50 mV

• Overdischarge detection voltage

2.0 to 3.0 V (10 mV steps)

Accuracy

±50 mV

• Overdischarge release voltage

2.0 to 3.4 V

*2

Accuracy

±100 mV

• Discharge overcurrent detection voltage

0.05 to 0.30 V (10 mV steps)

Accuracy

±15 mV

• Load short-circuiting detection voltage

0.5 V (fixed)

Accuracy

±200 mV

(2) Detection delay times are generated by an internal circuit (external capacitors are unnecessary).

Accuracy

±20%

(3) High-withstanding-voltage device is used for charger connection pins (VM pin and CO pin : Absolute maximum

rating = 28 V)

(4) 0 V battery charge function available / unavailable are selectable.

(5) Shutdown function yes / no are selectable.

(6) Wide operating temperature range

−40 to +85 °C

(7) Low current consumption

• Operation mode

3.0

• Power-down mode

0.2

(8) Small package:

SOT-23-5, SNT-6A

(9) Lead-free product

*1. Overcharge release voltage = Overcharge detection voltage

− Overcharge hysteresis voltage

(Overcharge hysteresis voltage can be selected as 0 V or from a range of 0.1 to 0.4 V in 50 mV steps.)

*2. Overdischarge release voltage = Overdischarge detection voltage

+ Overdischarge hysteresis voltage

(Overdischarge hysteresis voltage can be selected as 0 V or from a range of 0.1 to 0.7 V in 100 mV steps.)

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