The S-8211CAD-I6T1U is a single-cell lithium-ion battery protection IC manufactured by ABLIC U.S.A. Inc. It provides overcharge, overdischarge, and overcurrent protection for lithium-ion batteries used in portable devices. This IC is designed for applications where space is limited and high accuracy is required.

Applications

• Single-cell lithium-ion battery packs
• Smartphones
• Wearable devices
• Bluetooth headphones
• Portable medical devices

Features

• Overcharge protection
• Overdischarge protection
• Overcurrent protection
• Short-circuit protection
• High-accuracy voltage detection
• Small package: SOT-26

Benefits

• Enhanced battery safety: Protects the battery from damage caused by overcharge, overdischarge, and overcurrent conditions.
• Prolonged battery life: Prevents irreversible damage from extreme operating conditions, extending the battery's lifespan.
• Improved product reliability: Ensures stable and safe operation of the electronic device.
• Compact design: Small package allows for easy integration into space-constrained applications.
• Reduced external components: Simplifies the overall circuit design.

Additional Details

The S-8211CAD-I6T1U integrates multiple protection functions into a single chip. The overcharge protection prevents the battery voltage from exceeding a safe level during charging. The overdischarge protection prevents the battery voltage from dropping below a safe level during discharging. The overcurrent protection limits the discharge current to a safe level, and the short-circuit protection shuts down the output immediately in case of a short circuit. The accuracy of the detection voltages is critical for effective battery protection. This IC is often paired with a MOSFET to control the charging and discharging paths. Typical applications include devices using a single Li-Ion cell with a nominal voltage of 3.6V or 3.7V. It is important to consult the datasheet for the exact voltage thresholds and current limits for this specific part number.