BQ7692000PWR

Product Overview

Category

BQ7692000PWR belongs to the category of integrated circuits (ICs) used in battery management systems.

Use

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

Characteristics

• High accuracy voltage and temperature monitoring
• Overvoltage, undervoltage, and overtemperature protection
• Cell balancing functionality
• Communication interface for system integration
• Low power consumption

Package

The BQ7692000PWR IC is available in a small form factor TSSOP package.

Essence

The essence of BQ7692000PWR lies in its ability to ensure the safe and efficient operation of lithium-ion and lithium-polymer battery packs by providing comprehensive monitoring and protection features.

Packaging/Quantity

The IC is typically sold in reels containing a specified quantity, such as 2500 units per reel.

Specifications

• Input Voltage Range: 2.5V to 16V
• Number of Cells Monitored: Up to 15 series cells
• Voltage Measurement Accuracy: ±10mV
• Temperature Measurement Accuracy: ±1°C
• Balancing Current: Up to 100mA per cell
• Communication Interface: I2C

Detailed Pin Configuration

The BQ7692000PWR IC has a total of 24 pins. The pin configuration is as follows:

1. VDD - Power supply input
2. GND - Ground reference
3. SDA - I2C data line
4. SCL - I2C clock line
5. ALERT - Interrupt output
6. CB1 - Cell balance control
7. CB2 - Cell balance control
8. CB3 - Cell balance control
9. CB4 - Cell balance control
10. CB5 - Cell balance control
11. CB6 - Cell balance control
12. CB7 - Cell balance control
13. CB8 - Cell balance control
14. CB9 - Cell balance control
15. CB10 - Cell balance control
16. CB11 - Cell balance control
17. CB12 - Cell balance control
18. CB13 - Cell balance control
19. CB14 - Cell balance control
20. CB15 - Cell balance control
21. VSS - Negative supply voltage
22. TS1 - Temperature sense input
23. TS2 - Temperature sense input
24. VREF - Reference voltage output

Functional Features

• Accurate monitoring of individual cell voltages and temperatures
• Overvoltage protection to prevent cell damage
• Undervoltage protection to avoid deep discharge
• Overtemperature protection for safe operation
• Cell balancing to equalize charge levels among cells
• I2C interface for easy integration with battery management systems

Advantages and Disadvantages

Advantages

• High accuracy monitoring ensures optimal battery performance
• Comprehensive protection features enhance battery safety
• Cell balancing functionality extends battery pack lifespan
• Low power consumption minimizes energy loss
• Easy integration with existing battery management systems

Disadvantages

• Limited to lithium-ion and lithium-polymer battery packs
• Requires additional external components for complete battery management system implementation

Working Principles

The BQ7692000PWR IC works by continuously monitoring the voltage and temperature of each cell in a lithium-ion or lithium-polymer battery pack. It compares these measurements against predefined thresholds to detect abnormal conditions such as overvoltage, undervoltage, or overtemperature. In case of an abnormal condition, the IC triggers appropriate protection mechanisms, such as disconnecting the load or activating cell balancing. The IC communicates the status and measurement data through the I2C interface, allowing integration with a battery management system.

Detailed Application Field Plans

The BQ7692000PWR IC finds applications in various fields, including: - Electric vehicles - Portable electronic devices - Energy storage systems - Uninterruptible power supplies (UPS) - Solar power systems

Detailed and Complete Alternative Models

1. BQ7693000PWR: Similar to BQ7692000PWR but supports up to 16 series cells.
2. BQ7694000PWR: Enhanced version with additional protection features and support for up to 20 series cells.
3. BQ7695000PWR: Advanced model with extended communication capabilities and support for up to 24 series cells.

These alternative models offer similar functionality but cater to different battery pack configurations and specific requirements.

In conclusion, the BQ7692000PWR IC is a versatile and reliable component used in battery management systems for lithium-ion and lithium-polymer battery packs. Its accurate monitoring, comprehensive protection features, and cell balancing functionality make it an essential choice for ensuring the safe and efficient operation of various applications.

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