The S-8211CAU-I6T1G is a lithium-ion battery protection IC manufactured by SII Semiconductor Corporation. It offers comprehensive protection features for single-cell lithium-ion battery packs, guarding against overcharge, overdischarge, and overcurrent scenarios. This IC is commonly found in various portable electronic devices.

Applications

• Smartphones
• Tablets
• Portable Gaming Devices
• Wearable Technology (Smartwatches, Fitness Trackers)
• Bluetooth Headsets

Features

• Overcharge Protection: Monitors the battery voltage and disconnects the charging circuit if the voltage reaches a predefined limit.
• Overdischarge Protection: Prevents the battery from discharging below a safe voltage level, protecting against deep discharge damage.
• Overcurrent Protection: Limits the discharge current to protect the battery and connected circuitry from excessive current draw.
• Short-Circuit Protection: Provides rapid shutdown of the discharge path in the event of a short circuit.
• High-Accuracy Voltage Detection: Ensures precise monitoring of battery voltage for reliable protection.
• Low Current Consumption: Minimizes the impact on battery life, extending the operational time of the device.
• Compact Package: Available in a small SOT-23-6 package, suitable for space-constrained applications.

Benefits

• Enhanced Battery Safety: Protects lithium-ion batteries from damage due to overcharge, overdischarge, and overcurrent conditions.
• Extended Battery Life: Prevents battery degradation and prolongs the usable lifespan of the battery pack.
• Improved Device Reliability: Ensures stable and reliable operation of the electronic device.
• Simplified Circuit Design: Integrates multiple protection functions into a single IC, reducing component count and board space.
• Reduced Power Consumption: Low operating current contributes to longer battery life in portable devices.

Additional Details

The S-8211CAU-I6T1G includes a built-in delay circuit to prevent false triggering of the protection functions due to noise or transient voltage spikes. The overcharge, overdischarge, and overcurrent detection thresholds are precisely calibrated to ensure accurate and reliable protection. The IC typically operates with a supply voltage in the range of 1.5V to 5.5V. Different versions within the S-8211 series, such as the CAU variant, have slightly different voltage threshold settings. The IC is RoHS compliant.