S-8231BKFN-CCK-T2 Seiko, S-8231BKFN-CCK-T2 Datasheet
S-8231BKFN-CCK-T2
Related parts for S-8231BKFN-CCK-T2
S-8231BKFN-CCK-T2 Summary of contents
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... Overcharge release voltage can be selected within the range where the 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 1.0V) Overcurrent detection voltage 1 (2) ...
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... Battery Protection IC (for a single-cell pack) S-8231 Series Selection Guide(6, Aug, 1999 series Model/Item Overcharge detection voltage S-8231AAFN-CAA-T2 4.25V±25mV 4.05±50mV 2.30V±80mV 2.70V±100mV 0.100V±20mV S-8231ABFN-CAB-T2 4.35V±25mV 4.10±50mV 2.30V±80mV 3.00V±100mV 0.100V±20mV S-8231ACFN-CAC-T2 4.25V±25mV 4.05±50mV 2.30V±80mV 2.50V±100mV 0.120V±20mV S-8231ADFN-CAD-T2 4.25V± ...
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... S-8231BAFN-CCA-T2 4.18V±30mV 3.98V±50mV S-8231BBFN-CCB-T2 4.18V±30mV 4.08V±50mV S-8231BGFN-CCG-T2 4.28V±30mV 4.08V±50mV S-8231BIFN-CCI-T2 4.28V±30mV 4.08V±50mV S-8231BKFN-CCK-T2 4.22V±30mV 4.22V *1 *1) No hysteresis is set between overcharge detection and release. *2) Charge and discharge are prohibited once overcharge is detected. (Overcharge lock type) *3) Auxiliary overcharge detection voltage comes in three types, i ...
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... Battery Protection IC (for a single-cell pack) S-8231 Series Block Diagram VCC SENS Reference VSS Output impedance when CO terminal output ‘L’ is higher than DO terminal. Resistor (RCOL) is connected with CO terminal. Please refer ‘Electric Characteristics’. 4 Over discharge + - Control logic Over charge + - + - - ...
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... Detects voltage between Vss to SENS(Overcharge/discharge 7 NC detection pin Connects FET gate for discharge control (CMOS output) 6 ICT 3 CO Connects FET gate for charge control (CMOS output Detects voltage between VSS to VM(Overcurrent detection pin) VSS 5 5 VSS Negative power input 6 ICT ...
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... The overcharge detection delay time is either 1 0.5 s depending upon the product type (C2 = 0.047 (*5) The operation voltage indicates the voltage between VCC and VSS where the DO and CO logic are established. (*6) The 0 V battery function is either "0 V battery charging function" or "0 V battery charge inhibiting function" depending upon the product type. ...
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... The overcharge detection delay time is either 1 0.5 s depending upon the product type (C2 = 0.047 (*5) The operation voltage indicates the voltage between VCC and VSS where the DO and CO logic are established. (*6) The 0 V battery function is either "0 V battery charging function" or "0 V battery charge inhibiting function" depending upon the product type. ...
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... The overcharge detection delay time is either 1 0.5 s depending upon the product type (C2 = 0.047 (*5) The operation voltage indicates the voltage between VCC and VSS where the DO and CO logic are established. (*6) The 0 V battery function is either "0 V battery charging function" or "0 V battery charge inhibiting function" depending upon the product type. ...
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... Measurement 6 Measurement circuit 4 Set S1=ON, S2=OFF, V1=3.6V and V2=0 V under normal condition. Increase V3 from 0 V gradually. The V3 voltage when µA is the CO'H' voltage (VCO (H)). Set S1=OFF S2=ON, V1=4.7 V2=0 V and V4=4.7V under over voltage condition. (V4)/I2 is the CO pin internal resistance (RCOL). Battery Protection IC (for a single-cell pack) Seiko Instruments Inc. ...
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... The time after V1 becomes (VCU + 0.2V) until CO goes 'L' is the overcharge detection delay time (tCU). Set V1=3.6V , V2=0V and V1 = (VDD + 0.2V) under normal condition. Decrease V1 from (VDD + 0.2V) to (VDD - 0.2 V) immediately (within 10 µs). The time after V1 becomes (VDD - 0.2 V) until DO goes 'L' is the overdischarge detection delay time 1 (tDD). (8) Measurement 8 Measurement circuit 5 Set V1=3.6V under normal condition. Increase V2 from 0.5 V immediately (within 10 µ ...
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... S8231 Series Vss Measurement circuit 3 Vcc C2 = 0.047 µ µ µ µ F SENS V1 S8231 Series Vss DO V2 Measurement circuit 5 Battery Protection IC (for a single-cell pack) ICT ICT ICT VM CO Seiko Instruments Inc. S-8231 Series Vcc SENS I1 S8231 Series ...
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... FET turns off to stop discharging. This condition is called an overcurrent condition. The VM and Vss terminals are shorted by the Rvsm resistor at this time. Also the charging FET turns off. When the discharging FET is off and a load is connected, the VM terminal voltage equals the Vcc potential. ...
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... If the battery voltages becomes higher than the overcharge detection voltage (VCU), the charging FET turns off to stop charging. When a load is placed, at that condition, the discharging FET turns off too. Both charging and discharging are unable once overcharge detected. This mechanism can realize more safety Li-ion battery pack ...
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... VM and Vcc by connecting the charger, the charging FET gate is fixed to Vcc potential. When the voltage between the gate sources of the charging FET becomes equal to or higher than the turn- on voltage by the charger voltage, the charging FET turns on to start charging. At this time, the discharging FET turns off and the charging current flows through the internal parasitic diode in the discharging FET ...
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... VIOV1 Vss Charger connected Load connecte Mode Note: Normal mode, Over charge mode, Over discharge mode, over current mode The charger is assumed to charge with a constant Battery Protection IC (for a single-cell pack) Delay Delay Over charge mode, Over discharge mode, Figure 3 Delay tIOV2 ...
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... Battery Protection IC (for a single-cell pack) S-8231 Series Battery Protection IC Connection Example R2 SENS 1KΩ R1 Vcc 1KΩ Battery C1 0.047 µ F Vss FET1 Symbol Parts Purpose FET1 Nch MOSFET Charge control FET2 Nch MOSFET Discharge control R1 Chip resistor For ESD C1 Chip Filter capacitor R2 Chip resistor ...
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... R1 and C1 prevent from oscillation under overcurrent condition > 2.2 X 1E-5 is required lower than 2.2 X 1E-5, condition moved to power down mode when load is shorted. *2) R2 =R1 is required. Overcharge detection voltage is increased by R2. For example 10kΩ(R2) increase Overcharge detection voltage by 6.3mV. ...
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... C2 sets all delay times. [ Cause ] Capacitor C2 sets all delay times. When overcurrent detection is released until tIOV1 , the capacitor C2 is being charged by S-8231. IF the battery voltage is lower than VDD at that time, charging to C2 goes on. So delay time is shorter than typical under the condition. [ Conclusion ] This phenomenon occurs when battery voltage is nearly equal to the overdischarge voltage(VDD) after overcurrent detected ...
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... Overdischarge detection voltage vs. temperature 2.1 2 1.9 -40 - Ta(°C) Overcurrent1 detection voltage vs. temperature 0.13 0.1 0.07 -40 - Ta(°C) Battery Protection IC (for a single-cell pack) Overcharge release voltage vs. temperature V =4.30[V] CU 4.1 3 100 Ta(°C) Overdischarge release voltage vs. temperature V =2.00[V] DD 2.7 2.6 2 100 Overcurrent2 detection voltage vs. temperature V =0 ...
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... Overcharge detection time vs. temperature 1.5 1 0.5 -40 - Ta(°C) Overcurrent1 detection time vs. temperature -40 - Ta(°C) * Please design all applications of the S-8231 Series with safety in mind. 20 Current consumption vs. temperature in power-down mode V =3.60[V] CC 100 100 -40 Overdischarge detection time vs. temperature C2=0.047[uF] V =4.3 [V] ...
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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 ...