S-8254AAFFT-TB-U

Product Overview

Category

S-8254AAFFT-TB-U belongs to the category of integrated circuits (ICs).

Use

This IC is primarily used for battery protection in various electronic devices.

Characteristics

• Package: The S-8254AAFFT-TB-U comes in a small form factor package, making it suitable for compact designs.
• Essence: It provides reliable and efficient protection for batteries, preventing overcharging, over-discharging, and short circuits.
• Packaging/Quantity: The IC is typically packaged in reels or tubes, with a quantity of 2500 units per reel.

Specifications

The S-8254AAFFT-TB-U has the following specifications:

• Input Voltage Range: 2.5V - 6.0V
• Overcharge Detection Voltage: 3.9V ± 25mV
• Overdischarge Detection Voltage: 2.3V ± 50mV
• Overcurrent Detection Voltage: 100mV ± 20mV
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 0.1µA (typical)

Detailed Pin Configuration

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

1. VCC: Power supply input
2. GND: Ground connection
3. BAT: Battery connection
4. OUT: Output terminal
5. CE: Chip enable input
6. DOUT: Open-drain output for status indication
7. COUT: Capacitor connection for delay time adjustment
8. N/C: No connection

Functional Features

• Overcharge Protection: The IC monitors the battery voltage and disconnects the charging circuit when the voltage exceeds the specified threshold.
• Overdischarge Protection: It prevents excessive discharge of the battery by disconnecting the load when the voltage drops below the specified threshold.
• Overcurrent Protection: The IC detects high current conditions and interrupts the circuit to prevent damage to the battery or connected devices.
• Delay Time Adjustment: The COUT pin allows adjustment of the delay time for overcharge and overdischarge protection.

Advantages and Disadvantages

Advantages

• Compact size enables integration into space-constrained designs.
• Reliable protection against overcharging, overdischarging, and overcurrent.
• Low quiescent current minimizes power consumption.
• Wide operating temperature range ensures suitability for various environments.

Disadvantages

• Limited input voltage range may not be suitable for all applications.
• Requires external capacitors for delay time adjustment.

Working Principles

The S-8254AAFFT-TB-U operates based on a combination of voltage monitoring and control circuitry. It continuously measures the battery voltage and compares it with predetermined thresholds. When any of the thresholds are exceeded, the IC takes appropriate action to protect the battery and connected devices.

Detailed Application Field Plans

The S-8254AAFFT-TB-U finds applications in a wide range of electronic devices that utilize rechargeable batteries. Some potential application fields include:

1. Portable Electronics: Smartphones, tablets, and portable gaming devices.
2. Wearable Devices: Smartwatches, fitness trackers, and wireless earbuds.
3. Power Tools: Cordless drills, electric screwdrivers, and lawn mowers.
4. Electric Vehicles: E-bikes, electric scooters, and electric skateboards.
5. Medical Devices: Portable oxygen concentrators, insulin pumps, and patient monitors.

Detailed and Complete Alternative Models

1. S-8254AABFT-TB-G: Similar to S-8254AAFFT-TB-U but with a different package type.
2. S-8254AACFT-TB-U: Offers additional features such as temperature monitoring and protection.
3. S-8254AADFT-TB-G: Designed for higher voltage applications with an extended input voltage range.

These alternative models provide similar battery protection functionality but may have variations in package type, additional features, or voltage range compatibility.

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