S-8261.pdf

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Rev.1.9

_00

BATTERY PROTECTION IC FOR SINGLE-CELL PACK

S-8261 Series

The S-8261 series are lithium-ion / lithium polymer

rechargeable battery protection ICs incorporating high-

accuracy voltage detection circuit and delay circuit.

The S-8261 series are suitable for protection of single-cell

lithium ion/lithium polymer battery packs from overcharge,

overdischarge and overcurrent.

Features

(1) Internal high accuracy voltage detection circuit

•

Overcharge detection voltage

3.9 V to 4.4 V (applicable in 5 mV step)

Accuracy:

±25

mV (+25

°C)

and

±30

mV (−5

°C

+55 °C)

•

Overcharge hysteresis voltage

0.0 V to 0.4 V

Accuracy:

±25

The overcharge hysteresis voltage can be selected from the range 0.0 V to 0.4 V in 50 mV step.

•

Overdischarge detection voltage

2.0 V to 3.0 V (applicable in 10 mV step) Accuracy:

±50

•

Overdischarge hysteresis voltage 0.0 V to 0.7 V

Accuracy:

±50

The overdischarge hysteresis voltage can be selected from the range 0.0 V to 0.7 V in 100 mV step.

•

Overcurrent 1 detection voltage

0.05 V to 0.3 V (applicable in 10 mV step) Accuracy:

±15

•

Overcurrent 2 detection voltage

0.5 V (fixed) Accuracy:

±100

(2) High voltage device is used for charger connection pins

(VM and CO pins: absolute maximum rating

28 V)

(3) Delay times (overcharge: t

, overdischarge: t

, overcurrent 1: t

lOV1

, overcurrent 2: t

lOV2

) are generated

by an internal circuit. No external capacitor is necessary.

Accuracy:

±20%

(4) Three-step overcurrent detection circuit is included.

(overcurrent 1, overcurrent 2 and load short-circuiting)

(5) 0 V battery charge function “available” / “unavailable” are selectable.

(6) Charger detection function and abnormal charge current detection function

•

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

(Charger detection function)

•

When the output voltage of the DO pin is high and the voltage at the VM pin is equal to or lower than

the charger detection voltage (−0.7 V typ.), the output voltage of the CO pin goes low. (Abnormal

charge current detection function)

(7) Low current consumption

•

Operation mode

3.5

µA

typ., 7.0

µA

max.

•

Power-down mode

0.1

µA

max.

(8) Wide operating temperature range

−40 °C

+85 °C

(9) Small package SOT-23-6, 6-Pin SNB(B)

*1.

Overcharge release voltage

Overcharge detection voltage

−

Overcharge hysteresis voltage

(where overcharge release voltage

3.8 V is prohibited.)

*2.

Overdischarge release voltage

Overdischarge detection voltage

Overdischarge hysteresis voltage

(where overdischarge release voltage

3.4 V is prohibited.)

Applications

•

Lithium-ion rechargeable battery packs

•

Lithium polymer rechargeable battery packs

Seiko Instruments Inc.

BATTERY PROTECTION IC FOR SINGLE-CELL PACK

S-8261 Series

Packages

Package name

SOT-23-6

6-Pin SNB(B)

Package

MP006-A

BD006-A

Drawing code

Tape

MP006-A

BD006-A

Rev.1.9

_00

Reel

MP006-A

BD006-A

Seiko Instruments Inc.

Rev.1.9

_00

Block Diagrams

BATTERY PROTECTION IC FOR SINGLE-CELL PACK

S-8261 Series

1. Product with 0 V Battery Charge Function

Output control circuit

Oscillator control circuit

VDD

Divider

control

logic

0 V battery charge

circuit

−

Overcharge

detection

comparator

Charger

detection circuit

−

Overcurrent 1

detection comparator

VMD

−

Overcurrent 2

detection comparator

Load short-circuiting

detection comparator

−

VMS

Overdischarge

detection

comparator

−

VSS

Remark

All the diodes shown in the figure are parasitic diodes.

Figure 1

2. Product with 0 V Battery Charge Inhibition Function

Output control circuit

Oscillator control circuit

VDD

Divider

control

logic

0 V battery charge

inhibition circuit

−

Overcharge

detection

comparator

Charger

detection circuit

−

Overcurrent 1

detection comparator

VMD

−

Overcurrent 2

detection comparator

Load short-circuiting

detection comparator

−

VMS

Overdischarge

detection

comparator

−

VSS

Remark

All the diodes shown in the figure are parasitic diodes.

Figure 2

Seiko Instruments Inc.

BATTERY PROTECTION IC FOR SINGLE-CELL PACK

S-8261 Series

Product Name Structure

1. Product Name

S−8261A

−

xxx

−

IC direction in tape specifications

T2: SOT-23-6

TF: 6-Pin SNB(B)

Product name (abbreviation)

Package name (abbreviation)

MD: SOT-23-6

BD: 6-Pin SNB(B)

Rev.1.9

_00

Serial code

Assigned from AA to ZZ in alphabetical order

*1.

Refer to the taping specifications.

*2.

Refer to the Product Name List.

Seiko Instruments Inc.

Rev.1.9

_00

2. Product Name List

BATTERY PROTECTION IC FOR SINGLE-CELL PACK

S-8261 Series

Table 1 (1 / 2)

Model No.

S-8261AAGMD-G2G-T2

S-8261AAHMD-G2H-T2

S-8261AAJBD-G2J-TF

S-8261AAJMD-G2J-T2

S-8261AALMD-G2L-T2

S-8261AAMMD-G2M-T2

S-8261AANMD-G2N-T2

S-8261AAOMD-G2O-T2

S-8261AAPMD-G2P-T2

S-8261AARBD-G2R-TF

S-8261AARMD-G2R-T2

S-8261AASMD-G2S-T2

S-8261AAUMD-G2U-T2

S-8261AAVBD-G2V-TF

S-8261AAXMD-G2X-T2

S-8261AAZMD-G2Z-T2

S-8261ABAMD-G3A-T2

S-8261ABBMD-G3B-T2

S-8261ABCMD-G3C-T2

S-8261ABDBD-G3D-TF

S-8261ABEBD-G3E-TF

S-8261ABGBD-G3G-TF

S-8261ABHBD-G3H-TF

S-8261ABIBD-G3I-TF

S-8261ABJMD-G3J-T2

S-8261ABKMD-G3K-T2

S-8261ABLBD-G3L-TF

S-8261ABMMD-G3M-T2

S-8261ABNMD-G3N-T2

S-8261ABOBD-G3O-TF

S-8261ABPMD-G3P-T2

S-8261ABRMD-G3R-T2

S-8261ABSMD-G3S-T2

Overcharge

detection

voltage [V

]

4.28 V

4.325 V

4.30 V

4.275 V

4.28 V

4.325 V

4.28 V

4.275 V

4.3 V

4.35 V

4.28 V

4.35 V

4.275 V

4.30 V

4.28 V

4.275 V

4.20 V

4.275 V

4.28 V

4.10 V

4.275 V

4.28 V

4.30 V

4.28 V

4.20 V

4.275 V

4.28 V

Overcharge Overdischarge Overdischarge Overcurrent 1

hysteresis

detection

voltage [V

] voltage [V

IOV1

]

0.2 V

2.3 V

0.16 V

0.2 V

2.3 V

0.08 V

0.25 V

2.5 V

0.4 V

0.15 V

0.25 V

2.5 V

0.4 V

0.15 V

0.1 V

2.3 V

0.08 V

0.1 V

2.3 V

0.2 V

0.1 V

2.3 V

0.1 V

0.2 V

2.3 V

0.13 V

0.25 V

2.5 V

0.4 V

0.1 V

0.2 V

2.3 V

0.1 V

0.2 V

2.3 V

0.1 V

0.2 V

2.3 V

0.15 V

0.1 V

2.3 V

0.1 V

0.2 V

2.3 V

0.13 V

0.1 V

2.3 V

0.1 V

0.25 V

2.5 V

0.4 V

0.1 V

0.2 V

2.5 V

0.2 V

2.3 V

0.13 V

0.2 V

2.3 V

0.13 V

0.2 V

2.3 V

0.13 V

0.2 V

2.3 V

0.1 V

0.2 V

2.3 V

0.1 V

2.3 V

0.1 V

0.2 V

2.3 V

0.2 V

3.0 V

0.08 V

0.25 V

2.5 V

0.4 V

0.15 V

0.2 V

2.3 V

0.05 V

0.2 V

2.8 V

0.1 V

0.2 V

2.3 V

0.06 V

0.2 V

2.3 V

0.04 V

0.1 V

2.8 V

0.1 V

0.15 V

0.2 V

2.5 V

0.4 V

0.15 V

0.1 V

2.5 V

0.5 V

0.18 V

0 V battery

charge

function

Available

Unavailable

Available

Unavailable

Available

Unavailable

Available

Unavailable

Available

Unavailable

Available

Unavailable

Available

Unavailable

Available

Unavailable

Seiko Instruments Inc.

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