BQ29449DRBT

Product Overview

Category

BQ29449DRBT belongs to the category of integrated circuits (ICs) used in electronic devices.

Use

This product is primarily used for battery protection and monitoring in various applications.

Characteristics

• Integrated circuit designed for battery protection and monitoring
• Provides overvoltage, undervoltage, and overcurrent protection
• Monitors battery voltage and temperature
• Offers high accuracy and reliability

Package

BQ29449DRBT is available in a small outline package (SOIC) with 16 pins.

Essence

The essence of BQ29449DRBT lies in its ability to protect batteries from potential damage caused by overvoltage, undervoltage, and overcurrent conditions. Additionally, it ensures accurate monitoring of battery parameters.

Packaging/Quantity

This product is typically packaged in reels containing a specific quantity of ICs, which may vary depending on the manufacturer's specifications.

Specifications

• Input Voltage Range: 2.5V to 18V
• Operating Temperature Range: -40°C to +85°C
• Overvoltage Protection Threshold: Adjustable (typically 4.2V)
• Undervoltage Protection Threshold: Adjustable (typically 2.5V)
• Overcurrent Protection Threshold: Adjustable (typically 1.5A)
• Battery Voltage Monitoring Accuracy: ±0.5%
• Battery Temperature Monitoring Accuracy: ±2°C

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. BAT: Battery connection
4. PROTECT: Output indicating battery protection status
5. OV: Overvoltage protection threshold adjustment pin
6. UV: Undervoltage protection threshold adjustment pin
7. OC: Overcurrent protection threshold adjustment pin
8. TS: Battery temperature sense input
9. VSS: Ground reference for temperature sensing
10. SDA: I2C serial data input/output
11. SCL: I2C serial clock input 12-15. NC: No connection
12. ALERT: Output indicating fault conditions

Functional Features

1. Overvoltage Protection: Monitors battery voltage and triggers protection when it exceeds the set threshold.
2. Undervoltage Protection: Ensures battery voltage does not drop below the specified threshold, preventing damage to the battery.
3. Overcurrent Protection: Detects excessive current flow and activates protection mechanisms to safeguard the battery.
4. Battery Voltage Monitoring: Provides accurate measurement of battery voltage for monitoring purposes.
5. Battery Temperature Monitoring: Monitors battery temperature to prevent overheating and potential hazards.
6. I2C Interface: Allows communication with external devices for control and monitoring.

Advantages and Disadvantages

Advantages

• Comprehensive battery protection features
• High accuracy in voltage and temperature monitoring
• Adjustable protection thresholds
• Compact package size
• I2C interface for easy integration with other devices

Disadvantages

• Limited availability of alternative models
• Relatively higher cost compared to basic battery protection circuits

Working Principles

BQ29449DRBT operates by continuously monitoring the battery voltage and temperature. It compares these values with the user-defined protection thresholds. If any of the thresholds are exceeded, the IC triggers the appropriate protection mechanism, such as disconnecting the battery or activating an alarm signal. The I2C interface allows for configuration and monitoring of the IC's parameters.

Detailed Application Field Plans

BQ29449DRBT finds applications in various fields where battery protection and monitoring are crucial. Some notable examples include: - Electric vehicles - Portable electronic devices - Power banks - Renewable energy systems - Industrial equipment

Detailed and Complete Alternative Models

While BQ29449DRBT is a reliable choice for battery protection and monitoring, there are alternative models available in the market. Some notable alternatives include: - BQ29412DRBT - BQ29414DRBT - BQ29416DRBT

These models offer similar functionality but may have different specifications and package options.

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