S-8254AAAFT-TB-U

Product Overview

Category

The S-8254AAAFT-TB-U belongs to the category of integrated circuits (ICs) and specifically falls under the battery protection ICs.

Use

This product is primarily used for protecting rechargeable lithium-ion batteries from overcharging, over-discharging, and overcurrent conditions. It ensures the safe and efficient operation of lithium-ion batteries in various electronic devices.

Characteristics

• Battery protection: The S-8254AAAFT-TB-U provides comprehensive protection for lithium-ion batteries, preventing potential damage caused by voltage fluctuations or excessive current.
• High accuracy: This IC offers precise monitoring and control of battery voltage and current levels, ensuring optimal performance and longevity of the battery.
• Low power consumption: The S-8254AAAFT-TB-U is designed to consume minimal power during operation, maximizing the overall efficiency of the battery-powered device.
• Compact package: The IC comes in a small form factor package, making it suitable for space-constrained applications.
• Enhanced safety features: It incorporates advanced safety mechanisms to prevent short circuits, thermal runaway, and other hazardous situations.

Package and Quantity

The S-8254AAAFT-TB-U is available in a compact surface-mount package. Each package contains one unit of the IC.

Specifications

• Input voltage range: 2.5V - 6.0V
• Overcharge detection voltage: 4.25V ± 0.025V
• Overdischarge detection voltage: 2.50V ± 0.08V
• Overcurrent detection voltage: 0.10V ± 0.02V
• Operating temperature range: -40°C to +85°C
• Standby current: 0.1µA (typical)
• Dimensions: 3.00mm x 3.00mm x 0.55mm

Detailed Pin Configuration

The S-8254AAAFT-TB-U features the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. BAT: Battery connection terminal
4. CHG: Charging status output
5. DSG: Discharging status output
6. OVP: Overvoltage protection control
7. OCP: Overcurrent protection control
8. COUT: Capacitor connection terminal for external delay time adjustment

Functional Features

1. Overcharge protection: Monitors the battery voltage and disconnects the charging circuit when it exceeds the predefined threshold, preventing overcharging.
2. Overdischarge protection: Detects the battery voltage drop below a certain level and cuts off the discharge path to prevent excessive discharge, which can damage the battery.
3. Overcurrent protection: Monitors the current flowing through the battery and interrupts the circuit if it exceeds the specified limit, safeguarding against potential damage caused by excessive current.
4. Delayed output: Provides a delayed output signal to control external circuits, allowing sufficient time for stable voltage levels before enabling or disabling the connected devices.

Advantages and Disadvantages

Advantages

• Comprehensive battery protection ensures safe operation and extends battery life.
• High accuracy monitoring and control enhance overall performance.
• Low power consumption optimizes energy efficiency.
• Compact package enables integration into space-constrained designs.
• Advanced safety features minimize the risk of hazardous situations.

Disadvantages

• Limited compatibility: The S-8254AAAFT-TB-U is specifically designed for lithium-ion batteries and may not be suitable for other battery chemistries.
• Lack of customization options: The IC offers fixed protection thresholds and limited configurability, which may not meet the specific requirements of all applications.

Working Principles

The S-8254AAAFT-TB-U operates by continuously monitoring the battery voltage and current levels. It compares these values with predefined thresholds to determine if any protection action is required. When an abnormal condition such as overcharging, overdischarging, or overcurrent is detected, the IC triggers the appropriate control signals to interrupt the charging or discharging circuit, ensuring the battery remains within safe operating limits.

Detailed Application Field Plans

The S-8254AAAFT-TB-U finds applications in various electronic devices powered by lithium-ion batteries, including but not limited to: - Smartphones and tablets - Portable medical devices - Wearable electronics - Power tools - Electric vehicles

Detailed and Complete Alternative Models

1. S-8254AABFT-TB-U: Similar to the S-8254AAAFT-TB-U, this model offers battery protection for lithium-ion batteries with slightly different specifications.
2. S-8254AACFT-TB-U: Another alternative model providing battery protection for lithium-ion batteries, featuring additional customization options for protection thresholds.

These alternative models can be considered based on specific application requirements and compatibility considerations.

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