S-8232AAFT Seiko, S-8232AAFT Datasheet
S-8232AAFT
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S-8232AAFT Summary of contents
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... Overcharge release voltage can be selected within the range where a difference from Overcharge detection voltage 0.3 V) Overdischarge detection voltage Overdischarge release voltage (The Overdischarge release voltage can be selected within the range where a difference from Overdischarge detection voltage 1.2 V) Overcurrent detection voltage 1 (2) ...
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... Battery Protection IC (for a 2-serial-cell pack) S-8232 Series Selection Guide (01 .Nov ,2001) Overcharge Model/Item detection voltage1 CU1,2 S-8232AAFT 4.25V±25mV S-8232ABFT 4.35V±25mV S-8232ACFT 4.35V±25mV S-8232AEFT 4.35V±25mV S-8232AFFT 4.25V±25mV S-8232AGFT 4.25V±25mV S-8232AHFT 4.25V±25mV S-8232AIFT 4.325V±25mV S-8232AJFT 4.25V± ...
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... Rev. 4.1 _00 Block Diagram VCC SENS VC VSS Output impedance when CO terminal output ‘L’ is higher than DO terminal. R terminal. Please refer ‘Electric Characteristics’. Battery Protection IC (for a 2-serial-cell pack) Reference voltage 1 Auxiliary Over charge detector Over charge detector Control + Logic Over discharge ...
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... DO FET gate connection pin for discharge control (CMOS output FET gate connection pin for charge control (CMOS output Detection pin for voltage between VM and VSS (Overcurrent detection pin) 5 VSS Negative power input pin 6 ICT Capacitor connection pin for detection delay ...
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... Temperature coefficient 2 for detection voltage should be applied to overcurrent detection voltage. (3) The DO and CO pin logic are established at the operating voltage. (4) Auxiliary overcharge detection voltage is equal to the overcharge detection voltage times 1.11 for the products without overcharge hysteresis, and times 1.25 for other products. Battery Protection IC (for a 2-serial-cell pack) Table 5 ...
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... Temperature coefficient 2 for detection voltage should be applied to overcurrent detection voltage. (3) The DO and CO pin logic are established at the operating voltage. (4) Auxiliary overcharge detection voltage is equal to the overcharge detection voltage times 1.11 for the products without overcharge hysteresis, and times 1.25 for other products. 6 Table 6 ...
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... Temperature coefficient 2 for detection voltage should be applied to overcurrent detection voltage. (3) The DO and CO pin logic are established at the operating voltage. (4) Auxiliary overcharge detection voltage is equal to the overcharge detection voltage times 1.11 for the products without overcharge hysteresis, and times 1.25 for other products. Battery Protection IC (for a 2-serial-cell pack) Table 7 ...
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... Battery Protection IC (for a 2-serial-cell pack) S-8232 Series Measurement Circuits (1) Measurement 1 Measurement circuit 1 Set S1=OFF, V1=V2=3.6 V, and V3=0 V under normal condition. Increase V1 from 3.6 V gradually. The V1 voltage when CO = 'L' is overcharge detection voltage 'H' is overcharge release voltage 1 (V overdischarge voltage 1 (V DD1 release voltage Set S1=ON, and V1=V2=3.6 V and V3=0 V under normal condition. Increase V1 from DU1 3 ...
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... Set V1=V2=0 V, and V3=2 V, and decrease V3 gradually. The V3 voltage when CO = 'L' (V lower) is the 0 V charge starting voltage (V (12) Measurement 12 Measurement circuit 6 Set V1=0 V, V2=3.6 V, and V3=12 V, and increase V1 gradually. The V1 voltage when CO = ' higher) is the 0 V charge inhibiting voltage 1 (V (13) Measurement 13 Measurement circuit 6 Set V1=3.6 V, V2=0 V, and V3=12 V, and increase V2 gradually. The V2 voltage when CO = 'H' (V ...
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... This condition is called overcurrent condition. The VM and VSS terminals are shorted by the R resistor at this time. The charging FET is also turned off. When the discharging FET is off and a load vsm is connected, the VM terminal voltage equals the V The overcurrent condition returns to the normal condition when the load is released and the impedance between the EB− ...
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... IOV1 Note: The delay time for overcurrent detection 2 is fixed by an internal circuit. The delay time cannot be changed via an external capacitor battery charging function This function is used to recharge both of two serially-connected batteries after they self-discharge ...
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... V charge inhibit voltage 1 and 2 (V total voltage of both connected batteries reaches the minimum value (V between VCC-VSS. When using this optional function, a resistor of 4.7 MΩ is needed between the gate and the source of the charging control FET (refer to Figure 6). (1) When initially connecting batteries, the IC may fail to enter the normal condition (discharging ready state) ...
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... Vcc Viov2 VM Viov1 terminal Vss EB- Charger connected Delay Load connected Mode Note: Normal mode, Over charge mode, Over discharge mode, The charger is assumed to charge with a constant current. 2. Overdischarge detection Vcu V1 battery Vcd Battery Vdu voltage Vdd Vss Vcc DO terminal Vss Vcc ...
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... Viov2 VM Viov1 terminal Vss EB- Charger connected Load connected t Delay = IOV1 Mode Note: Normal mode, Over charge mode, Over discharge mode, The charger is assumed to charge with a constant current. 14 V1,V2 battery t Delay = IOV2 over current mode Figure 5 Seiko Instruments Inc. Rev. 4.1 _00 < t IOV1 ...
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... C3. See the electrical characteristics. IOV 3) When the resistor R3 is set less than 300 Ω and a charger is reverse-connected, current which exceeds the power dissipation of the package will flow and the IC may break. But excessive R3 causes increase of overcurrent detection voltage ...
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... After the overcurrent detection, the load was connected for a long time, even if one of the battery voltage became lower than overdischarge detection voltage (V the load is connected. Therefor the IC’s current consumption at the one of the battery voltage is lower than the overdischarge detection voltage is same as normal condition current consumption (I ...
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... Unless keeping the IC(S-8232) with load for a long time, the reduction of battery voltage will be neglected, because of the IC’s(S-8232) current consumption(typ. 7.5 µA) is small. (4) Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. Battery Protection IC (for a 2-serial-cell pack) Battery ...
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... Battery Protection IC (for a 2-serial-cell pack) S-8232 Series Characteristics(typical characteristics) 1. Detection voltage temperature characteristics Overcharge detection voltage1 vs. temperature 4.4 4.3 4.2 -40 - Ta(°C) Overcharge release voltage1 vs. temperature 4.1 4 3.9 3.9 -40 -40 -20 - Ta(°C) Ta(°C) Auxiliary overcharge detection voltage1 vs. temperature 5.45 5.35 5.25 -40 - Ta(°C) 18 Overcharge detection voltage2 vs. temperature V =4 ...
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... Ta(°C) Overdischarge release voltage1 vs. temperature 2.7 2.6 2.5 -40 - Ta(°C) Overcurrent1 detection voltage vs. temperature 0.12 0.10 0.08 -40 - Ta(°C) Battery Protection IC (for a 2-serial-cell pack) Overdischarge detection voltage2 vs. temperature V =2.00 [V] DD1 2 100 -40 Overdischarge release voltage1 vs. temperature V =2.60 [V] DU1 2.7 2.6 2 100 -40 Overcurrent1 detection voltage vs. temperature V =0 ...
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... Battery Protection IC (for a 2-serial-cell pack) S-8232 Series 2.Current consumption temperature characteristics Current consumption vs. temperature in normal mode -40 - Ta(°C) 3. Delay time temperature characteristics Overcharge detection1 time vs. temperature 1.5 1 0.5 -40 - Ta(°C) Overcurrent1 detection time vs. temperature -40 -20 ...
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... Use of the information described herein for other purposes and/or reproduction or copying without the express permission of Seiko Instruments Inc. is strictly prohibited. The products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc ...