S-8241 Seiko Instruments, S-8241 Datasheet
S-8241
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S-8241 Summary of contents
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... Packages Package name SOT-23-5 5-Pin SON(A) The S-8241 Series is a series of lithium-ion/lithium polymer rechargeable battery protection ICs incorporating high-accuracy voltage detection circuits and delay circuits. These ICs are suitable for protection of single-cell lithium ion/lithium polymer battery packs from overcharge, overdischarge and overcurrent. ...
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... Block Diagram VDD − + VSS Remark The diodes in the IC are parasitic diodes. Product Code Structure 1. Product Name S-8241A xxx xx *1 Refer to the taping specifications at the end of this book. *2 Refer to the product name list. 2 Delay circuit Clock generation circuit Counter circuit Overcharge ...
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... V 4.095 V 2.3 V 2.3 V 4.095 V 2.3 V 2.3 V 4.080 V 2.6 V 2.6 V 4.150 V 2.05 V 2.75 V 4.100 V 2.3 V 2.3 V 4.150 V 2.0 V 2.0 V 4.200 V 2.5 V 3.0 V 4.150 V 2.1 V 2.2 V Seiko Instruments Inc. S-8241 Series Over- 0V battery Delay current 1 charging time detection function combi- *1 voltage nation [V ] IOV1 0.100 V Unavailable (1) 0.125 V Available (2) 0.075 V Unavailable (1) 0.100 V Available (1) 0 ...
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... BATTERY PROTECTION IC FOR 1-CELL PACK S-8241 Series Model No./Item Over- charge detection voltage [V CU S-8241ACOMC-GCO-T2 4.100 V S-8241ACPMC-GCP-T2 4.325 V S-8241ACQMC-GCQ-T2 4.275 V S-8241ACRMC-GCR-T2 4.350 V S-8241ACSMC-GCS-T2 4.180 V S-8241ACTMC-GCT-T2 4.100 V S-8241ACUMC-GCU-T2 4.180 V S-8241ACXMC-GCX-T2 4.275 V S-8241ACYMC-GCY-T2 4.275 V S-8241ACZPN-KCZ-TF 4.350 V S-8241ADAMC-GDA-T2 4.350 V S-8241ADBPN-KDB-TF 4.280 V *1. The delay time combination (1), (2), (3), ( follows. ...
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... Applicable pin *1 V VDD − − Topr − Tstg Seiko Instruments Inc. S-8241 Series Pin Description Pin Description (Ta = 25°C unless otherwise specified) Rating −0 + − +0 −0 +0 −0 ...
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... BATTERY PROTECTION IC FOR 1-CELL PACK S-8241 Series Electrical Characteristics (1) Other than detection delay time (25°C) Item Symbol DETECTION VOLTAGE Overcharge detection voltage V =3 Step CU Overcharge release voltage V − 0.4 V, 50mV Step CU CL Overdischarge detection voltage V =2.0 to 3.0 V, 100mV Step DL Overdischarge release voltage − ...
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... V 0.7 3.0 6.0 0.6 2 100 600 3500 0.07 1.3 7.3 VM =1.8 V 0.07 0.5 2 300 1310 39 100 220 0.0 0.8 1.7 0.4 0.9 1.4 S-8241 Series *1 ) Measure- Unit ment circuit − mV/°C − mV/°C V − V − V − V − µA 1 µA 1 µA 1 µ ...
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... BATTERY PROTECTION IC FOR 1-CELL PACK S-8241 Series Electrical Characteristics (3) Detection delay time (25°C) Item DELAY TIME (1) Overcharge detection delay time Overdischarge detection delay time Overcurrent 1 detection delay time Overcurrent 2 detection delay time Load short-circuiting detection delay time DELAY TIME (2) Overcharge detection delay time ...
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... IOV2 t 9 − SHORT − − − IOV1 − IOV2 − SHORT Seiko Instruments Inc. S-8241 Series * (Ta = -40 to 85°C unless otherwise specified) Min. Typ. Max. Unit 0.55 1.0 1 125 212 ms 4 1.1 2 3.4 ms − ...
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... BATTERY PROTECTION IC FOR 1-CELL PACK S-8241 Series Measurement Circuits Unless otherwise specified, the output voltage levels "H" and "L" and DO pins are judged by the threshold voltage (1 Nch FET. Judge the CO pin level with respect to V respect Voltages are shown in the figure 4. ...
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... VMD ) between VM and VSS. VMS ). COH ). COL ). DOH ). DOL ). DL Seiko Instruments Inc. S-8241 Series flowing through VDD pin is the normal DD flowing through VDD pin is the DD flowing through VDD pin is the DD flowing through VM pin. VM flowing through VM pin. 3.5 V/|I VM flowing through CO pin. CO flowing through CO CO flowing through DO pin ...
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... Set V1=0 V and V2=-4 V. Increase V1 gradually. The voltage between VDD and VSS at which V ″H″ 0 higher) is the 0V battery charge inhibiting battery voltage ( IOV1 ). ). SHORT VDD S-8241 series V1 VSS COM Measurement circuit 1 Figure 4 Seiko Instruments Inc ...
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... Battery Protection IC Connection Example”. Normal Condition The S-8241 monitors the voltage of the battery connected to VDD and VSS pins and the voltage difference between VM and VSS pins to control charging and discharging. When the battery voltage is in the range from the overdischarge detection voltage (V ...
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... Consequently, when the battery voltage is equal to or lower than the overcharge detection voltage ( mV, the S-8241 immediately returns to the normal condition. But the battery voltage is higher than the overcharge detection voltage (V condition until the battery voltage drops below the overcharge detection voltage (V a load is connected ...
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... VM and VDD becomes 1.3 V (typ.) or higher (load short-circuiting detection voltage). At this time, the FET is still off. When the battery voltage becomes the overdischarge detection voltage (V note), the S-8241 turns the FET on and changes to the normal condition from the overdischarge condition. Remark If the VM pin voltage is no less than the charger detection voltage (V ...
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... Having detected the overcurrent 1, if the overcurrent 2 is detected after the overcurrent 2 detection delay time, the S-8241 turns the discharging control FET off as shown in the figure 5. In this case, the overcurrent 2 detection delay time may seem to be longer or overcurrent 1 detection delay time may seem to be shorter than expected ...
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... In this case, set the VM pin voltage equal to the V connect a charger) to enter the normal condition. BATTERY PROTECTION IC FOR 1-CELL PACK (1) (2) (3) potential. When the voltage between the gate and DD (1) (3) Seiko Instruments Inc. S-8241 Series ) or higher is connected between EB+ and 0CHA ), the normal DU voltage (short the VM and VSS pins ...
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... BATTERY PROTECTION IC FOR 1-CELL PACK S-8241 Series Timing Chart 1-1. Overcharge and overdischarge detection (for products with power-down function attery voltage pin pin pin CHA Charger connected Load connected ...
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... BATTERY PROTECTION IC FOR 1-CELL PACK ) Overcurrent 2 detection delay time (t IOV1 (4) (1) (4) Figure 8 Overdischarge detection delay time ( (1) (3) Figure 9 Seiko Instruments Inc. S-8241 Series ) Load short-circuiting detection delay time (t IOV2 (1) (1) ( pin voltage < V CHA Overdischarge is released at overdischarge detection voltage ( (1) ) SHORT ...
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... BATTERY PROTECTION IC FOR 1-CELL PACK S-8241 Series 4. Abnormal charge current detection Battery CL voltage pin pin pin CHA Charger connection Load connection Overdischarge detection delay time (t Mode Note: (1) Normal mode, (2) Overcharge mode, (3) Overdischarge mode, (4) Overcurrent mode The charger is assumed to charge with constant current ...
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... Seiko Instruments Inc. S-8241 Series EB kΩ EB− max. Remarks 0.4 V ≤ Threshold voltage ≤ overdischarge detection voltage. Withstand voltage between gate and source ≥ Charger voltage 0.4 V ≤ ...
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... BATTERY PROTECTION IC FOR 1-CELL PACK S-8241 Series Precautions • Pay attention to the operating conditions for input/output voltage and load current so that the power loss in the IC does not exceed the power dissipation of the package. • Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. • ...
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... Overdischarge release voltage vs. temperature 2.50 2.46 2.42 2.38 2.34 2. 100 -50 Overcurrent 2 detection voltage vs. temperature 0.60 0.55 0.50 0.45 0. 100 -50 Current consumption vs. Temperature in power-down mode 0.10 0.08 0.06 0.04 0.02 0. 100 -50 Seiko Instruments Inc. S-8241 Series - Ta(°C) - Ta(°C) - Ta(°C) - Ta(°C) 100 100 100 100 23 ...
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... BATTERY PROTECTION IC FOR 1-CELL PACK S-8241 Series 3. Current consumption Power voltage characteristics (Ta=25°C) Current consumption - - power supply volatge dependency Detection/release delay time temperature characteristics Overcharge detection delay time vs. temperature 2.0 1.5 1.0 0.5 0.0 -50 -25 0 Ta(°C) Overdischarge detection delay time vs. temperature ...
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... Seiko Instruments Inc. 0 -50 - Ta(°C) Overcurrent 2 detection delay time vs. power supply voltage dependency 2.0 2.5 3.0 3.5 4 pin sink current characteristics V =4.5V ( pin sink current characteristics V =1.8V,V DD 0.0 0.5 1.0 V (V) DO S-8241 Series 75 100 4.5 5 1.5 2.0 25 ...
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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 ...