The S-8253AAAFT is a battery protection IC manufactured by SII Semiconductor Corporation. This IC is designed to protect lithium-ion (Li-ion) and lithium polymer (Li-Po) batteries from overcharge, overdischarge, and overcurrent conditions. The device is characterized by its high accuracy, low current consumption, and small package size, making it suitable for various portable electronic devices.

Applications:

• Lithium-ion and lithium-polymer battery packs
• Smartphones
• Tablets
• Wearable devices (smartwatches, fitness trackers)
• Portable power banks
• Wireless headphones
• Portable media players

Features:

• Overcharge detection: Prevents battery damage due to excessive charging voltage.
• Overdischarge detection: Prevents battery damage due to excessive discharging.
• Overcurrent detection: Protects the battery and connected devices from excessive discharge current.
• Short-circuit protection: Provides rapid shutdown in the event of a short circuit.
• High-accuracy voltage detection: Ensures precise protection thresholds.
• Low current consumption: Minimizes battery drain during operation.
• Small package size: Allows for compact integration in portable devices.

Benefits:

• Enhanced Battery Safety: Prevents battery damage and reduces the risk of fire or explosion.
• Extended Battery Life: Optimizes battery usage and prevents premature degradation.
• Improved System Reliability: Protects connected devices from damage due to battery faults.
• Compact Solution: Enables smaller and lighter designs for portable devices.
• Lower Power Consumption: Extends the operating time of battery-powered devices.

Additional Details:

The S-8253AAAFT incorporates a built-in delay circuit for overcurrent detection to prevent false triggering due to transient current spikes. It typically has pre-set voltage detection thresholds tailored to the specific characteristics of lithium-ion batteries. The IC also includes a charge-discharge control function. The S-8253 series generally comes in a small DFN package. It is RoHS compliant.