BQ7694001DBT

The BQ7694001DBT is a precision analog front-end (AFE) for battery management systems. It provides accurate monitoring and protection for series-connected lithium-ion battery packs.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• B-: Negative terminal of the battery pack
• B+: Positive terminal of the battery pack
• T1-: Terminal 1 for external NTC thermistor connection
• T1+: Terminal 1 for external NTC thermistor connection
• T2-: Terminal 2 for external NTC thermistor connection
• T2+: Terminal 2 for external NTC thermistor connection
• TEMP: Temperature sense pin
• VSS: Ground connection
• VDD: Positive power supply
• SCL: I2C serial clock input
• SDA: I2C serial data input/output
• CS: Chip select for SPI interface
• MISO: Master In Slave Out for SPI interface
• MOSI: Master Out Slave In for SPI interface
• SCK: Serial Clock for SPI interface
• IRQ: Interrupt output

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the BQ7694001DBT AFE for a visual representation.

Key Features

• Precision Battery Monitoring: Accurately measures and balances individual cell voltages in lithium-ion battery packs for enhanced safety and performance.
• Temperature Sensing: Supports connection to external NTC thermistors for precise temperature monitoring.
• Communication Interfaces: Features I2C and SPI interfaces for communication with microcontrollers and host systems.
• Integrated Protection: Provides overcurrent, overvoltage, undervoltage, and overtemperature protection for battery management.
• Low Power Consumption: Optimized for low-power operation, suitable for energy-efficient applications.
• Compact Package: Available in a space-saving 38-pin TSSOP package.

Note: For detailed technical specifications, please refer to the BQ7694001DBT datasheet.

Application

• Lithium-Ion Battery Management: Ideal for use in battery management systems for electric vehicles, power tools, and energy storage systems.
• Portable Devices: Suitable for battery monitoring and protection in portable consumer electronics such as smartphones, tablets, and laptops.
• Solar Energy Storage: Used in solar energy storage applications for monitoring and safeguarding lithium-ion battery packs.

Functionality

The BQ7694001DBT is a precision analog front-end designed to monitor and protect lithium-ion battery packs. It ensures accurate voltage and temperature measurements, making it essential for safe and efficient battery management.

Usage Guide

• Power Supply: Connect VDD (Pin 8) to the positive power supply and VSS (Pin 9) to ground.
• Battery Connection: Connect B+ (Pin 2) and B- (Pin 1) to the positive and negative terminals of the battery pack, respectively.
• Communication Setup: Interface with a microcontroller or host system using the I2C or SPI communication interfaces.

Frequently Asked Questions

Q: What is the maximum input voltage supported by the BQ7694001DBT?
A: The BQ7694001DBT can support a maximum input voltage of 28V for monitoring and protection.

Q: Is the BQ7694001DBT suitable for automotive battery management systems?
A: Yes, the BQ7694001DBT is suitable for automotive applications, providing essential battery monitoring and protection functions.