Power Management ICs

Battery Protection IC for 1-Cell Pack S-8211E Series

DatasheetJul. 29, 2019

Parts List


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The S-8211E Series has the high-accuracy voltage detection circuit and the delay circuit. This IC is suitable for monitoring overcharge and overdischarge of 1-cell lithium ion / lithium polymer secondary battery pack.


High-accuracy voltage detection circuit
Overcharge detection voltage 3.6 V to 4.5 V (5 mV step) Accuracy ±25 mV (+25°C) / Accuracy ±30 mV (-5°C to +55°C
Overcharge release voltage 3.5 V to 4.4 V*1 Accuracy ±50 mV
Overdischarge detection voltage 2.0 V to 3.0 V (10 mV step) Accuracy ±50 mV
Overdischarge release voltage 2.0 V to 3.4 V*2 Accuracy ±100 mV
Detection delay times are generated by an internal circuit (external capacitors are unnecessary) Accuracy ±20%
Wide operating temperature range
-40°C to +85°C
Low current consumption
Operation mode 3.0 µA typ., 5.5 µA max. (+25°C)
Overdischarge mode 2.0 µA typ., 3.5 µA max. (+25°C)
Lead-free, Sn 100%, halogen-free

*1. Overcharge release voltage = Overcharge detection voltage – Overcharge hysteresis voltage (Overcharge hysteresis voltage can be selected as 0 V or from a range of 0.1 V to 0.4 V in 50 mV step.)

*2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage (Overdischarge hysteresis voltage can be selected as 0 V or from a range of 0.1 V to 0.7 V in 100 mV step.)


  • Lithium-ion rechargeable battery packs
  • Lithium-polymer rechargeable battery packs

Parts List

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