BQ77910ADBTR - English Editing Encyclopedia Entry

Product Overview

Category

BQ77910ADBTR belongs to the category of integrated circuits (ICs) specifically designed for battery management systems.

Use

This product is primarily used for monitoring and protecting rechargeable batteries in various applications, such as electric vehicles, portable electronics, and renewable energy systems.

Characteristics

• BQ77910ADBTR is a highly reliable and efficient battery management IC.
• It offers advanced features like overvoltage protection, undervoltage protection, and overcurrent protection.
• The IC also provides accurate voltage and temperature monitoring capabilities.
• It supports communication protocols like I2C and SMBus for easy integration into existing systems.

Package and Quantity

BQ77910ADBTR is available in a small form factor package known as Thin Shrink Small Outline Package (TSSOP). Each package contains one IC.

Specifications

• Input Voltage Range: 2.7V to 18V
• Operating Temperature Range: -40°C to +85°C
• Communication Interface: I2C, SMBus
• Number of Pins: 24
• Battery Cell Compatibility: Lithium-ion, Lithium-polymer

Detailed Pin Configuration

The pin configuration of BQ77910ADBTR is as follows:

1. VDD: Power supply input
2. GND: Ground reference
3. SDA: Serial data line for I2C communication
4. SCL: Serial clock line for I2C communication
5. ALERT: Interrupt output for fault conditions
6. BAT: Battery voltage sense input
7. TS: Temperature sense input
8. STAT1: Status output 1
9. STAT2: Status output 2
10. STAT3: Status output 3
11. STAT4: Status output 4
12. STAT5: Status output 5
13. STAT6: Status output 6
14. STAT7: Status output 7
15. STAT8: Status output 8
16. STAT9: Status output 9
17. STAT10: Status output 10
18. STAT11: Status output 11
19. STAT12: Status output 12
20. STAT13: Status output 13
21. STAT14: Status output 14
22. STAT15: Status output 15
23. STAT16: Status output 16
24. VSS: Ground reference

Functional Features

• Overvoltage Protection: BQ77910ADBTR monitors the battery voltage and triggers protection mechanisms if it exceeds the safe threshold.
• Undervoltage Protection: It ensures that the battery voltage does not drop below a critical level, preventing damage to the battery.
• Overcurrent Protection: The IC safeguards the battery by limiting the current flow during high-demand situations.
• Accurate Monitoring: It provides precise measurements of battery voltage and temperature for accurate state-of-charge estimation.
• Communication Interface: BQ77910ADBTR supports I2C and SMBus protocols, enabling seamless integration with other devices in the system.

Advantages and Disadvantages

Advantages

• High reliability and efficiency
• Comprehensive protection features
• Accurate monitoring capabilities
• Easy integration with existing systems

Disadvantages

• Limited compatibility with non-lithium-ion/polymer battery chemistries
• Relatively higher cost compared to simpler battery management solutions

Working Principles

BQ77910ADBTR operates based on a combination of voltage and current sensing techniques. It continuously monitors the battery voltage and compares it to predefined thresholds to trigger appropriate protection mechanisms. The IC also measures the battery temperature to ensure safe operation. By utilizing the communication interface, it can provide real-time status updates to the system controller.

Detailed Application Field Plans

BQ77910ADBTR finds extensive application in various fields, including: 1. Electric Vehicles: It ensures the safe and efficient operation of battery packs in electric cars, providing critical protection and monitoring functions. 2. Portable Electronics: The IC safeguards the batteries in smartphones, tablets, and other portable devices, enhancing their reliability and lifespan. 3. Renewable Energy Systems: BQ77910ADBTR plays a crucial role in managing and protecting batteries used in solar power systems and wind energy storage applications.

Detailed Alternative Models

1. BQ77910ADBTRG4: Similar to BQ77910ADBTR, but with enhanced ESD protection features.
2. BQ77910ADBTRV1: A variant optimized for higher voltage battery systems (up to 36V).
3. BQ77910ADBTRT: This model offers extended temperature range (-40°C to +105°C) for demanding environments.

Note: The above alternative models are just a few examples. There are several other alternatives available in the market.

In conclusion, BQ77910