FOR AUTOMOTIVE BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK (SECONDARY PROTECTION)

S-8235A Series

Seiko Instruments Inc.

12



Battery Protection IC Connection Example

1. 8-serial cell (5-cell

+ 3-cell, cascade connection)

1 VDD

2 VC1

3 VC2

4 VC3

5 VC4

6 VC5

7 VSS

8 NPI

CLKI 11

CAO 10

9

RSTI 12

RSTO 13

CLKO 14

CAI 15

CTL 16

S-8235A

(1)

CO

1 VDD

2 VC1

3 VC2

4 VC3

5 VC4

6 VC5

7 VSS

8 NPI

CLKI 11

CAO 10

9

RSTI 12

RSTO 13

CLKO 14

CAI 15

CTL 16

S-8235A

(2)

CO

EB

+

EB

−

1 k

Ω

1 k

Ω

1 k

Ω

1 k

Ω

1 k

Ω

1 k

Ω

1000 pF 1000 pF

1000 pF

1000 pF

Input for reset signal

Input for clock signal

Output for chip active signal

Output for charge control

Figure 7

Table 7 Constants for External Components

Part

Min.

Typ.

Max.

Unit

0.1

1

1

k

Ω

0.25

1.2

1.2

k

Ω

−

5.1

−

M

Ω

0.075

0.1

1

μF

0.075

0.1

1

μF

Caution 1. The above constants are subject to change without prior notice.

2. The example of connection shown above and the constants will not guarantee successful

operation. Perform thorough evaluation using the actual application to set the constants.

constant.

Remark n = 1 to 5