S-8254AAYFT-TB-G

Product 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-8254AAYFT-TB-G 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 lithium-ion batteries.

Packaging/Quantity: The S-8254AAYFT-TB-G 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
• Overdischarge Detection Voltage: 2.4V ± 100mV
• Overcurrent Detection Voltage: 0.1V ± 20mV
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The S-8254AAYFT-TB-G features a TSOP-6 package with the following pin configuration:

``` 1 2 3

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| | | IC | |___________| 4 5 6 ```

Pin Description: 1. VCC: Power supply input 2. GND: Ground reference 3. BAT: Battery connection 4. CHG: Charging control output 5. DSG: Discharging control output 6. N/C: Not connected

Functional Features

1. Overcharge Protection: Monitors the battery voltage during charging and prevents overcharging by disconnecting the charging circuit.
2. Overdischarge Protection: Monitors the battery voltage during discharging and cuts off the load when the battery voltage drops below a safe threshold.
3. Overcurrent Protection: Detects excessive current flow and interrupts the circuit to prevent damage to the battery and connected devices.
4. Temperature Monitoring: Includes a built-in temperature sensor to monitor battery temperature and protect against overheating.
5. Low Power Consumption: Operates with low power consumption, minimizing energy loss during battery protection.

Advantages and Disadvantages

Advantages: - Provides comprehensive protection for lithium-ion batteries - High accuracy in detecting voltage and current levels - Compact and lightweight design - Wide operating temperature range - Low power consumption

Disadvantages: - Limited compatibility with other battery chemistries - Requires proper configuration and setup for optimal performance

Working Principles

The S-8254AAYFT-TB-G operates based on a combination of voltage and current monitoring techniques. It continuously measures the battery voltage and compares it to predefined thresholds for overcharge and overdischarge protection. When the voltage exceeds the overcharge threshold, the IC disconnects the charging circuit. Similarly, when the voltage drops below the overdischarge threshold, it cuts off the load to prevent further discharge. The overcurrent protection feature monitors the current flow and interrupts the circuit if it exceeds the specified limit.

Application Field Plans

The S-8254AAYFT-TB-G is widely used in various applications involving lithium-ion rechargeable batteries, including: - Portable electronic devices (e.g., smartphones, tablets, laptops) - Power tools - Electric vehicles - Energy storage systems

Alternative Models

1. S-8254AAYFT-TB-G2: Similar to the S-8254AAYFT-TB-G, but with enhanced overcurrent protection capabilities.
2. S-8254AAYFT-TB-H: A higher voltage version of the S-8254AAYFT-TB-G, suitable for batteries with a wider voltage range.

These alternative models offer similar functionality and can be considered as alternatives based on specific application requirements.

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