The S-8211BAA-I6T1G is a high-performance lithium-ion battery protection IC manufactured by SII Semiconductor Corporation. It is designed to protect single-cell lithium-ion batteries from overcharge, overdischarge, and overcurrent conditions. This IC is ideal for use in a wide range of portable electronic devices, ensuring the safety and extending the lifespan of the battery.

Applications

• Smartphone battery packs
• Wireless earbuds charging cases
• Wearable devices (smartwatches, fitness trackers)
• Portable power banks
• Bluetooth speakers
• Other small portable electronics

Features

• Overcharge detection with high accuracy
• Overdischarge detection with low current consumption
• Overcurrent detection with short circuit protection
• Charge/discharge control via external FETs
• Automatic recovery from overcharge and overdischarge conditions
• Low operating current

Benefits

• Enhanced Battery Safety: Protects the battery from potentially damaging overcharge, overdischarge, and overcurrent conditions, preventing cell rupture or fire hazards.
• Extended Battery Life: Prevents battery degradation caused by overcharging or deep discharging, maximizing the usable lifespan of the battery.
• Improved System Reliability: Ensures stable and reliable operation of the device by preventing battery-related failures.
• Simplified Circuit Design: Integrates multiple protection functions into a single IC, reducing the number of external components required and simplifying the overall circuit design.
• Low Power Consumption: Minimizes the impact on battery life, allowing for longer runtimes in portable devices.

Technical Specifications

The S-8211BAA-I6T1G offers precise voltage detection thresholds for overcharge, overdischarge, and overcurrent protection. Consult the datasheet for specific voltage and current limits. The operating temperature range and supply voltage range are critical parameters for proper operation. The IC is typically available in a small SOT-23-6 package. External FETs are used to control the charge and discharge paths, providing flexibility in selecting components based on the specific application requirements. The low operating current helps to minimize the overall power consumption of the protection circuit.

The overcharge detection voltage, overdischarge detection voltage, and overcurrent detection voltage are carefully calibrated to provide optimal protection for lithium-ion batteries. The automatic recovery features allow the battery to resume normal operation after an overcharge or overdischarge condition has been resolved. The small package size makes it suitable for integration into compact portable devices.