BATTERY PROTECTION IC WITH DISCHARGE CONTROL FUNCTION FOR 1-CELL PACK

S-8250A Series

Seiko Instruments Inc.

7



Electrical Characteristics

1. Ta =

+25°C

Table 8

(Ta =

+25°C unless otherwise specified)

Item

Symbol

Condition

Min.

Typ.

Max.

Unit

Test

Circuit

Detection Voltage

Overcharge detection voltage

−

− 0.020

+ 0.020

V

1

Ta =

−10°C to +60°C

*1

− 0.025

+ 0.025

V

1

Overcharge release voltage

− 0.030

+ 0.030

V

1

− 0.025

+ 0.020

V

1

Overdischarge detection voltage

−

− 0.050

+ 0.050

V

2

Overdischarge release voltage

− 0.100

+ 0.100

V

2

− 0.050

+ 0.050

V

2

Discharge overcurrent detection voltage

V

2

V

2

V

2

Load short-circuiting detection voltage

−

2

Charge overcurrent detection voltage

−

V

2

0 V Battery Charge Function

0 V battery charge

function "available"

0.00

0.70

1.00

V

2

0 V battery charge

function "unavailable"

0.90

1.25

1.60

V

2

Internal Resistance

Resistance between VM pin and VDD pin

−

500

1000

2000

k

Ω

3

Resistance between VM pin and VSS pin

−

10

20

40

k

Ω

3

CTL pin internal resistance

−

× 0.5

× 2.0

M

Ω

3

Input Voltage

Operation voltage between VDD pin and

VSS pin

−

1.5

−

6.5

V

−

Operation voltage between VDD pin and

VM pin

−

1.5

−

28

V

−

CTL pin voltage "H"

−

−

−

× 0.9

V

2

CTL pin voltage "L"

−

× 0.1

−

−

V2

Input Current

Current consumption during operation

−

−

2.0

4.0

μA3

Current consumption during power-down

−

−

−

50

nA

3

−

−

−

1.0

μA3

Current consumption during discharge

inhibition

−

−

2.0

4.0

μA3

Output Resistance

CO pin resistance "H"

−

5

10

20

k

Ω

4

CO pin resistance "L"

−

5

10

20

k

Ω

4

DO pin resistance "H"

−

5

10

20

k

Ω

4

DO pin resistance "L"

−

5

10

20

k

Ω

4

Delay Time

Overcharge detection delay time

−

× 0.8

× 1.2

−

5

Overdischarge detection delay time

−

× 0.8

× 1.2

−

5

−

× 0.8

× 1.2

−

5

Load short-circuiting detection delay time

−

× 0.7

× 1.3

−

5

Charge overcurrent detection delay time

−

× 0.8

× 1.2

−

5

Discharge inhibition delay time

−

× 0.8

× 1.2

−

5

*1. Since products are not screened at high and low temperature, the specification for this temperature range is guaranteed by

design, not tested in production.