BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK

S-8253A/B Series

Seiko Instruments Inc.

10

Test Circuits

1. Overcharge Detection Voltage 1, Overcharge Release Voltage 1, Overdischarge Detection Voltage 1,

Overdischarge Release Voltage 1

(Test Condition 1, Test Circuit 1)

Confirm that V1

= V2 = 3.5 V (S-8253A Series), V1 = V2 = V3 = 3.5 V (S-8253B Series), V4 = 0 V, V5 = 0 V, and the COP

× 0.1 V or lower) (this status is referred to as the initial status).

× 0.9 V or

more) after the V1 voltage has been gradually increased starting at the initial status. Overcharge release voltage 1

voltage of V1 when the voltage at the DOP pin is low after the V1 voltage has been gradually increased.

By changing Vn (n

measured in the same way as when n

= 1.

2. Overcurrent Detection Voltage 1, Overcurrent Detection Voltage 2, Overcurrent Detection Voltage 3

(Test Condition 2, Test Circuit 1)

Confirm that V1

= V2 = 3.5 V (S-8253A Series), V1 = V2 = V3 = 3.5 V (S-8253B Series), V4 = 0 V, V5 = 0 V, and the COP

pin and DOP pin are low (this status is referred to as the initial status).

after the V5 voltage has been gradually increased starting at the initial status.

instantaneously increased (within 10

µs) starting at the initial status.

instantaneously increased (within 10

µs) starting at the initial status.