BQ7694001DBT

Product Overview

Category

BQ7694001DBT belongs to the category of integrated circuits (ICs) used in battery management systems.

Use

This product is specifically designed for monitoring and protecting lithium-ion battery packs.

Characteristics

• Integrated circuit for battery management
• Monitors individual cell voltages and temperatures
• Provides overvoltage, undervoltage, and overtemperature protection
• Enables balancing of cell voltages
• Supports communication interfaces for system integration

Package

BQ7694001DBT is available in a small outline transistor (SOT) package.

Essence

The essence of this product lies in its ability to ensure the safe and efficient operation of lithium-ion battery packs by monitoring and protecting individual cells.

Packaging/Quantity

This product is typically sold in reels containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply voltage: 2.7V to 16V
• Operating temperature range: -40°C to +85°C
• Cell voltage measurement accuracy: ±10mV
• Cell temperature measurement accuracy: ±1°C
• Communication interface: I2C or SPI

Detailed Pin Configuration

The BQ7694001DBT has a total of 24 pins. The pin configuration is as follows:

1. VSS - Ground
2. VDD - Supply voltage
3. SDA - I2C data line
4. SCL - I2C clock line
5. ALERT - Interrupt output
6. THERM - Temperature sense input
7. VC1P0 - Cell 1 positive terminal
8. VC1N0 - Cell 1 negative terminal
9. VC2P0 - Cell 2 positive terminal
10. VC2N0 - Cell 2 negative terminal
11. VC3P0 - Cell 3 positive terminal
12. VC3N0 - Cell 3 negative terminal
13. VC4P0 - Cell 4 positive terminal
14. VC4N0 - Cell 4 negative terminal
15. VC5P0 - Cell 5 positive terminal
16. VC5N0 - Cell 5 negative terminal
17. VC6P0 - Cell 6 positive terminal
18. VC6N0 - Cell 6 negative terminal
19. VREFP - Reference voltage input
20. VREFN - Reference voltage input
21. VSS - Ground
22. VDD - Supply voltage
23. SDA - I2C data line
24. SCL - I2C clock line

Functional Features

• Cell voltage monitoring: The BQ7694001DBT can measure the voltage of each individual cell in a lithium-ion battery pack.
• Temperature monitoring: It also provides accurate temperature measurements for each cell.
• Protection mechanisms: This IC offers overvoltage, undervoltage, and overtemperature protection to prevent damage to the battery pack.
• Balancing capability: The BQ7694001DBT supports cell balancing, which equalizes the voltages across cells to optimize performance and extend battery life.
• Communication interfaces: It features I2C and SPI interfaces for seamless integration into battery management systems.

Advantages and Disadvantages

Advantages

• Accurate cell voltage and temperature monitoring
• Comprehensive protection mechanisms
• Cell balancing capability
• Flexible communication interfaces

Disadvantages

• Limited to lithium-ion battery packs
• Requires additional circuitry for complete battery management system implementation

Working Principles

The BQ7694001DBT operates by continuously measuring the voltages and temperatures of individual cells in a lithium-ion battery pack. It compares these measurements to predefined thresholds and triggers protection mechanisms if any parameter exceeds the safe range. The IC also enables cell balancing by diverting excess charge from higher voltage cells to lower voltage cells, ensuring uniform cell voltages.

Detailed Application Field Plans

The BQ7694001DBT is widely used in various applications involving lithium-ion battery packs, including: - Electric vehicles - Portable electronic devices - Energy storage systems - Uninterruptible power supplies (UPS) - Solar power systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the BQ7694001DBT are: - LTC6804-2 by Linear Technology - MAX14920 by Maxim Integrated - ISL94203 by Renesas Electronics - BMS7240 by Texas Instruments

These alternative models provide comparable features and can be considered as alternatives depending on specific application requirements.

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