EC9527A

Protection IC for 1-Cell Battery Pack

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4H25N-Rev.F001

Test Circuits

Over-charge, over-discharge and the release detection voltages (test circuit 1)

1) Set V1=3.5V, V2=0V, S1=ON, then EC9527A enter operating mode.

goes low (from high).

again.

high.

Note: The over-charge and over-discharge release voltages are defined in versions.

Discharge over-current detection voltage (test circuit 1)

1) Set V1=3.5 V, V2=0V, S1=ON and EC9527A enter operating condition.

goes low (from high).

Load short-circuiting detection voltage (test circuit 1)

1) Set V1=3.5V, V2=0V, S1=ON and EC9527A enter operating condition.

2) Increase V2 immediately (within 10uS) till DO pin goes “low” from high with a delay time which is between the

minimum and the maximum of Load short-circuiting delay time.

Over-charge, over-discharge delay time (test circuit 1)

1) Set V1=3.5V, V2=0V, S1=ON to enter operating condition.

3) Set V1=3.5V, V2=0V, S1=ON and S2 = OFF to enter operating condition.

Discharge over-current delay time (test circuit 1)

1) Set V1=3.5V, V2=0V, S1=ON to enter operating condition.

the period from the time V2 gets to 0.25V till DO pin switches from high to low.

Load short-circuiting delay time (test circuit 1)

1) Set V1=3.5V, V2=0V, S1=ON to enter operating condition.

2) Increase V2 from 0V to 1.6V immediately (within 10us). The Load short-circuiting detection voltage delay

Operating current consumption (test circuit 2)

1) Set V1=3.5V, V2=0V and S1=ON to enter operating condition and measure the current I1. I1 is the operating

0V battery charge starting charger voltage (test circuit 3)

1) Set V1=V2=0V, increase V2 gradually.