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S-8223AAC-I6T1U Datasheet(PDF) 10 Page - Seiko Instruments Inc |
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S-8223AAC-I6T1U Datasheet(HTML) 10 Page - Seiko Instruments Inc |
10 / 30 page BATTERY PROTECTION IC FOR 2-SERIAL / 3-SERIAL CELL PACK (SECONDARY PROTECTION) S-8223A/B/C/D Series Rev.1.0_00 10 Test Circuits 1. Overcharge detection voltage, overcharge hysteresis voltage (Test circuit 1) Set SW1 to OFF in CMOS output product of the S-8223A/C Series and in the S-8223B/D Series, and set SW1 to ON in Nch open-drain output product of the S-8223A/C Series. 1. 1 Overcharge detection voltage n (VCUn) Set V0 = 0 V, V1 = V2 = V3 = VCU − 0.05 V in test circuit 1. The overcharge detection voltage 1 (VCU1) is the V1 voltage when the CO pin output inverts after the V1 voltage has been gradually increased. Overcharge detection voltage (VCUn) (n = 2 to 3) can be determined in the same way as when n = 1. 1. 2 Overcharge hysteresis voltage n (VHCn) Set V0 = 0 V, V1 = VCU + 0.05 V, V2 = V3 = 2.5 V. The overcharge hysteresis voltage 1 (VHC1) is the difference between V1 voltage and VCU1 when the CO pin output inverts again after the V1 voltage has been gradually decreased. Overcharge hysteresis voltage (VHCn) (n = 2 to 3) can be determined in the same way as when n = 1. 2. Output voltage (S-8223B/D Series) (Test circuit 1) Set SW1 to OFF in the S-8223B/D Series. 2. 1 CO pin output voltage "H" The CO pin output voltage "H" (VCOH) is the voltage between the CO pin and the VSS pin when V0 = 0 V, V1 = V2 = V3 = 5.2 V. 3. Output current (Test circuit 4) 3. 1 CMOS output product in S-8223A/C Series Set SW4 and SW5 to OFF. 3. 1. 1 Active "H" (1) CO pin source current (ICOH) Set SW4 to ON after setting V1 = 5.2 V, V2 = 2.8 V, V3 = 2.5 V, V4 = 0.5 V. I1 is the CO pin source current (ICOH) at that time. (2) CO pin sink current (ICOL) Set SW5 to ON after setting V1 = V2 = V3 = 3.5 V, V5 = 0.5 V. I2 is the CO pin sink current (ICOL) at that time. 3. 1. 2 Active "L" (1) CO pin source current (ICOH) Set SW4 to ON after setting V1 = V2 = V3 = 3.5 V, V4 = 0.5 V. I1 is the CO pin source current (ICOH) at that time. (2) CO pin sink current (ICOL) Set SW5 to ON after setting V1 = 5.2 V, V2 = 2.8 V, V3 = 2.5 V, V4 = 0.5 V. I2 is the CO pin sink current (ICOL) at that time. |
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