S-8254AAHFT-TB-G

Product Overview

Category

The S-8254AAHFT-TB-G 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-8254AAHFT-TB-G 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 safety.
• Low power consumption: The S-8254AAHFT-TB-G is designed to minimize power consumption, thereby extending battery life.
• Compact package: It comes in a small form factor package, making it suitable for space-constrained applications.
• RoHS compliant: The product adheres to the Restriction of Hazardous Substances directive, ensuring environmental friendliness.

Package and Quantity

The S-8254AAHFT-TB-G is available in a compact surface-mount TSSOP-16 package. Each package contains one unit of the IC.

Specifications

• Input voltage range: 2.5V - 6.0V
• Overcharge detection voltage: 3.9V ± 25mV
• Overdischarge detection voltage: 2.3V ± 100mV
• Overcurrent detection voltage: 0.1V ± 20mV
• Operating temperature range: -40°C to +85°C
• Standby current: 0.1µA (typical)
• Dimensions: 4.4mm x 5.0mm x 1.0mm

Pin Configuration

The S-8254AAHFT-TB-G features a TSSOP-16 package with the following pin configuration:

1: VDD 2: GND 3: CHG 4: DSG 5: OCP 6: OVP 7: COUT 8: VREF 9: VSS 10: BAT 11: NTC 12: TS 13: CE 14: SDA 15: SCL 16: INT

Functional Features

1. Overcharge protection: Monitors battery voltage during charging and prevents overcharging, ensuring the battery remains within safe limits.
2. Overdischarge protection: Detects low battery voltage and cuts off the discharge path to prevent excessive discharge, prolonging battery life.
3. Overcurrent protection: Safeguards the battery by detecting excessive current flow and interrupting the circuit to prevent damage.
4. Temperature monitoring: Includes an NTC (Negative Temperature Coefficient) input for temperature sensing, enabling thermal protection.
5. Communication interface: Supports I2C communication protocol through the SDA and SCL pins, allowing for easy integration with microcontrollers or other devices.
6. Fault detection: Provides an interrupt signal (INT) to indicate fault conditions, enabling timely response and system shutdown if necessary.

Advantages and Disadvantages

Advantages

• Comprehensive battery protection ensures safe operation and extends battery lifespan.
• High accuracy monitoring and control enhance battery performance.
• Low power consumption contributes to energy efficiency.
• Compact package size enables use in space-constrained applications.
• RoHS compliance promotes environmental sustainability.

Disadvantages

• Limited to lithium-ion battery protection, not suitable for other battery chemistries.
• Requires additional components (e.g., NTC thermistor) for temperature monitoring.

Working Principles

The S-8254AAHFT-TB-G operates by continuously monitoring the battery voltage, current, and temperature. It compares these values with predefined thresholds to detect overcharge, overdischarge, and overcurrent conditions. Upon detecting a fault, the IC takes appropriate action, such as interrupting the charging or discharging path, to protect the battery. The communication interface allows for configuration and status monitoring through an external microcontroller.

Application Field Plans

The S-8254AAHFT-TB-G is widely used in various portable electronic devices powered by lithium-ion batteries. Some typical application fields include: - Smartphones and tablets - Laptops and notebooks - Portable gaming consoles - Digital cameras and camcorders - Portable medical devices - Wearable electronics

Alternative Models

For those seeking alternative options, the following battery protection ICs can be considered: 1. S-8254AABFT-TB-G: Similar features and specifications, but with a