BQ7693003DBTR

Product Overview

Category

BQ7693003DBTR belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• Integrated circuit designed for battery management applications
• Provides accurate monitoring and protection for multi-cell lithium-ion or lithium-polymer battery packs
• Offers high precision voltage and temperature monitoring
• Supports overvoltage, undervoltage, and overtemperature protection
• Enables balancing of individual cells within a battery pack
• Facilitates communication with external microcontrollers through an I2C interface

Package

BQ7693003DBTR is available in a small outline transistor (SOT) package.

Essence

The essence of this product lies in its ability to ensure safe and efficient operation of battery packs by providing comprehensive monitoring and protection features.

Packaging/Quantity

This product is typically packaged in reels and is available in quantities suitable for both prototyping and large-scale production.

Specifications

• Input Voltage: 2.5V to 16V
• Operating Temperature Range: -40°C to +85°C
• Number of Cells Supported: Up to 15 series-connected cells
• Communication Interface: I2C
• Balancing Current: Up to 100mA per cell
• Fault Detection and Protection Features: Overvoltage, undervoltage, overtemperature, short circuit, and reverse polarity protection

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. SDA: I2C data line
4. SCL: I2C clock line
5. ALERT: Interrupt output indicating fault conditions
6. BAT: Battery pack positive terminal connection
7. CELL1 to CELL15: Individual cell voltage measurement inputs
8. BAL1 to BAL15: Balancing control outputs for individual cells

Functional Features

• Accurate voltage and temperature monitoring of each cell in a battery pack
• Overvoltage protection prevents cell damage due to excessive voltage levels
• Undervoltage protection safeguards against deep discharge of cells
• Overtemperature protection prevents overheating of the battery pack
• Cell balancing ensures uniform charge levels across all cells, maximizing overall battery performance and lifespan
• I2C interface allows seamless integration with external microcontrollers for system-level control and monitoring

Advantages and Disadvantages

Advantages

• High precision monitoring and protection features ensure safe operation of battery packs
• Cell balancing capability extends battery life and enhances performance
• Compact package size enables space-efficient designs
• Wide operating temperature range allows for versatile application in various environments

Disadvantages

• Limited to lithium-ion or lithium-polymer battery pack management applications
• Requires additional external microcontroller for complete system integration

Working Principles

BQ7693003DBTR operates by continuously monitoring the voltage and temperature of each cell within a battery pack. It compares these measurements against predefined thresholds to detect abnormal conditions such as overvoltage, undervoltage, or overtemperature. In case of a fault, it triggers appropriate protection mechanisms like disconnecting the load or activating cell balancing. The I2C interface facilitates communication with an external microcontroller, enabling comprehensive control and monitoring of the battery pack.

Detailed Application Field Plans

The BQ7693003DBTR is widely used in various applications that require reliable battery management. Some common application fields include:

1. Electric Vehicles (EVs): Ensures safe and efficient operation of battery packs in electric cars, scooters, and bicycles.
2. Portable Electronics: Provides battery protection and monitoring in smartphones, tablets, laptops, and other portable devices.
3. Energy Storage Systems: Enables effective management of battery packs in renewable energy storage systems, such as solar or wind power installations.
4. Medical Devices: Ensures reliable battery performance and safety in medical equipment like patient monitors, infusion pumps, and portable diagnostic devices.

Detailed and Complete Alternative Models

1. BQ7692000DBTR: Similar battery management IC with support for up to 10 series-connected cells.
2. BQ7694000DBTR: Advanced version with extended features, including support for up to 20 series-connected cells and higher balancing current capability.

Note: This is not an exhaustive list of alternative models, and it is recommended to consult the manufacturer's documentation for a complete range of options.

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