S-8215AAA-K8T2U Datasheet, PDF (8/29 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK

BATTERY PROTECTION IC FOR 3-SERIAL TO 5-SERIAL CELL PACK (SECONDARY PROTECTION)
S-8215A Series
Rev.2.3_02
 Test Circuits
1. Overcharge detection voltage, overcharge hysteresis voltage
(Test circuit 1)
1. 1 Overcharge detection voltage n (V_CUn)
Set V1 = V2 = V3 = V4 = V5 = V_CU − 0.05 V. The overcharge detection voltage 1 (V_CU1) is the V1 voltage when the CO
pin’s output changes after the voltage of V1 has been gradually increased.
Overcharge detection voltage (V_CUn) (n = 2 to 5) can be determined in the same way as when n = 1.
1. 2 Overcharge hysteresis voltage n (V_HCn)
Set V1 = V_CU + 0.05 V, V2 = V3 = V4 = V5 = 2.5 V. The overcharge hysteresis voltage 1 (V_HC1) is the difference
between V1 voltage and V_CU1 when the CO pin's output changes after the V1 voltage has been gradually decreased.
Overcharge hysteresis voltage (V_HCn) (n = 2 to 5) can be determined in the same way as when n = 1.
2. Output current
(Test circuit 5)
2. 1 Output current of CMOS output product
Set SW1 and SW2 to OFF.
2. 1. 1 Active "H"
(1) CO pin source current (I_COH)
Set SW1 to ON after setting V1 = 5.5 V, V2 to V5 = 3.0 V, V6 = 0.5 V. I1 is the CO pin source current (I_COH) at
that time.
(2) CO pin sink current (I_COL)
Set SW2 to ON after setting V1 to V5 = 3.5 V, V7 = 0.5 V. I2 is the CO pin sink current (I_COL) at that time.
2. 1. 2 Active "L"
(1) CO pin source current (I_COH)
Set SW1 to ON after setting V1 to V5 = 3.5 V, V6 = 0.5 V. I1 is the CO pin source current (I_COH) at that time.
(2) CO pin sink current (I_COL)
Set SW2 to ON after setting V1 = 5.5 V, V2 to V5 = 3.0 V, V7 = 0.5 V. I2 is the CO pin sink current (I_COL) at that
time.
2. 2 Output current of Nch open-drain output product
Set SW1 and SW2 to OFF.
2. 2. 1 Active "H"
(1) CO pin leakage current "L" (I_COLL)
Set SW2 to ON after setting V1 = 5.5 V, V2 to V5 = 3.0 V, V7 = 17.5 V. I2 is the CO pin leakage current "L"
(I_COLL) at that time.
(2) CO pin sink current (I_COL)
Set V1 to V5 = 3.5 V, V7 = 0.5 V. I2 is the CO pin sink current (I_COL) at that time.
2. 2. 2 Active "L"
(1) CO pin leakage current "L" (I_COLL)
Set SW2 to ON after setting V1 to V5 = 3.5 V, V7 = 17.5 V. I2 is the CO pin leakage current "L" (I_COLL) at that
time.
(2) CO pin sink current (I_COL)
Set V1 = 5.5 V, V2 to V5 = 3.0 V, V7 = 0.5 V. I2 is the CO pin sink current (I_COL) at that time.
8