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.
Features
- 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.)
Applications
- Lithium-ion rechargeable battery packs
- Lithium-polymer rechargeable battery packs