S-8254AABFT-TB-U

Overview

Category: Integrated Circuit (IC)

Use: Battery protection IC for lithium-ion rechargeable batteries

Characteristics: - Provides overcharge, overdischarge, and overcurrent protection for lithium-ion batteries - Monitors battery voltage and current to ensure safe operation - Controls charging and discharging processes to prevent damage to the battery - Offers high accuracy and reliability in battery protection

Package: Thin Small Outline Package (TSOP-6)

Essence: The S-8254AABFT-TB-U is a battery protection IC designed to safeguard lithium-ion rechargeable batteries from potential hazards such as overcharging, overdischarging, and overcurrent. It ensures the safe and efficient operation of the battery.

Packaging/Quantity: The S-8254AABFT-TB-U is typically sold in reels containing 3,000 units per reel.

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Overcharge Detection Voltage: 4.25V ± 25mV
• Overcharge Release Voltage: 4.10V ± 50mV
• Overdischarge Detection Voltage: 2.30V ± 80mV
• Overdischarge Release Voltage: 2.60V ± 100mV
• Overcurrent Detection Voltage: 0.15V ± 20mV
• Overcurrent Detection Delay Time: 5ms to 20ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-8254AABFT-TB-U has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. CHG: Charging control input
4. DSG: Discharging control input
5. OUT: Battery output
6. N/C: No connection (not internally connected)

Functional Features

1. Overcharge Protection: Monitors the battery voltage during charging and prevents it from exceeding a safe threshold.
2. Overdischarge Protection: Monitors the battery voltage during discharging and prevents it from dropping below a safe threshold.
3. Overcurrent Protection: Detects excessive current flow and protects the battery from damage.
4. Charging Control: Controls the charging process to ensure optimal charging efficiency and prevent overcharging.
5. Discharging Control: Controls the discharging process to prevent overdischarging and extend battery life.

Advantages and Disadvantages

Advantages: - Provides comprehensive protection for lithium-ion batteries - High accuracy and reliability in battery protection - Compact package size for space-constrained applications - Wide operating temperature range for versatile usage

Disadvantages: - Limited to lithium-ion rechargeable batteries, not compatible with other battery chemistries - Requires external components for complete battery protection system implementation

Working Principles

The S-8254AABFT-TB-U operates by continuously monitoring the battery voltage and current. It compares these values against predefined thresholds to detect potential hazards such as overcharge, overdischarge, and overcurrent conditions. When any of these conditions are detected, the IC takes appropriate actions to protect the battery, such as interrupting the charging or discharging process. This ensures the battery operates within safe limits and prolongs its lifespan.

Detailed Application Field Plans

The S-8254AABFT-TB-U is widely used in various portable electronic devices powered by lithium-ion rechargeable batteries. Some common application fields include:

1. Mobile Phones: Protects the battery from overcharging and overdischarging, ensuring safe and reliable operation.
2. Tablets and Laptops: Safeguards the battery during charging and discharging processes, preventing damage and extending battery life.
3. Power Banks: Provides comprehensive battery protection for portable power banks, ensuring safe usage and efficient charging.
4. Portable Medical Devices: Protects the battery in medical devices such as insulin pumps and portable monitors, ensuring reliable operation in critical situations.

Detailed and Complete Alternative Models

1. S-8254AABFT-TB-G: Similar to S-8254AABFT-TB-U but with a different package (Thin Small Outline Package - TSOP-6)
2. S-8254AABFT-TB-C: Similar to S-8254AABFT-TB-U but with a different package (Chip Scale Package - CSP-6)
3. S-8254AABFT-TB-Q: Similar to S-8254AABFT-TB-U but with a different package (Quad Flat No-Lead - QFN-6)

These alternative models offer similar functionality and features, but differ in package type, allowing flexibility in design and integration.

In conclusion, the S-8254AABFT-TB-U is a battery protection IC