BQ28400PWR

Product Overview

Category

BQ28400PWR belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• BQ28400PWR is a high-performance battery management IC designed for efficient power management.
• It offers advanced features such as overvoltage protection, undervoltage protection, and temperature monitoring.
• The IC ensures safe and reliable operation of batteries by providing accurate voltage and current measurements.
• It supports communication protocols like I2C, enabling seamless integration with microcontrollers.

Package

BQ28400PWR comes in a small outline package (SOP) with 16 pins.

Essence

The essence of BQ28400PWR lies in its ability to monitor and protect batteries, ensuring their optimal performance and longevity.

Packaging/Quantity

The IC is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of BQ28400PWR ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Communication Interface: I2C
• Number of Pins: 16
• Battery Cell Compatibility: Lithium-ion, Lithium-polymer

Detailed Pin Configuration

1. VSS: Ground
2. SDA: I2C Data Line
3. SCL: I2C Clock Line
4. ALERT: Interrupt Output
5. BAT: Battery Connection
6. TS: Temperature Sense Input
7. VDD: Power Supply
8. VSS: Ground
9. VSS: Ground
10. VSS: Ground
11. VSS: Ground
12. VSS: Ground
13. VSS: Ground
14. VSS: Ground
15. VSS: Ground
16. VSS: Ground

Functional Features

1. Battery Voltage Monitoring: BQ28400PWR accurately measures the battery voltage, ensuring safe operation within specified limits.
2. Overvoltage Protection: The IC detects and protects against excessive voltage levels, preventing damage to the battery and connected devices.
3. Undervoltage Protection: It monitors the battery voltage to prevent it from dropping below a critical threshold, avoiding potential damage or malfunction.
4. Temperature Monitoring: BQ28400PWR continuously monitors the battery temperature, enabling thermal management and preventing overheating.
5. Communication Interface: The I2C interface allows seamless communication with microcontrollers, facilitating control and monitoring of battery parameters.

Advantages and Disadvantages

Advantages

• Accurate battery voltage and temperature monitoring.
• Comprehensive protection against overvoltage and undervoltage conditions.
• Seamless integration with microcontrollers through the I2C interface.
• Compact package size for space-constrained applications.

Disadvantages

• Limited compatibility with other battery chemistries (specifically designed for lithium-ion and lithium-polymer batteries).
• Relatively higher cost compared to simpler battery management solutions.

Working Principles

BQ28400PWR operates by continuously monitoring the battery voltage and temperature. It compares these values against predefined thresholds to detect overvoltage, undervoltage, and excessive temperature conditions. Upon detection, the IC triggers appropriate actions such as interrupt signals or cutoff mechanisms to protect the battery and connected devices.

Detailed Application Field Plans

BQ28400PWR finds extensive application in various electronic devices that utilize lithium-ion or lithium-polymer batteries. Some common application fields include:

1. Portable Electronics: Smartphones, tablets, laptops, and portable gaming devices benefit from the accurate battery monitoring and protection features of BQ28400PWR.
2. Electric Vehicles: Battery management systems in electric cars rely on ICs like BQ28400PWR to ensure safe and efficient operation of the vehicle's battery pack.
3. Power Tools: Cordless power tools, such as drills and saws, utilize this IC for battery management, enhancing their performance and lifespan.
4. Energy Storage Systems: BQ28400PWR plays a crucial role in managing batteries used in renewable energy storage systems, ensuring optimal utilization and longevity.

Detailed and Complete Alternative Models

1. BQ294502PW: This IC offers similar battery management features with additional support for multiple battery cells.
2. MAX14920: A versatile battery management IC that provides comprehensive protection and monitoring capabilities.
3. LTC6804: Suitable for high-voltage battery packs, this IC offers advanced balancing and monitoring features.

These alternative models provide similar functionality to BQ28400PWR and can be considered based on specific application requirements.

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