BQ2085DBT-V1P2G4

Product Overview

Category

BQ2085DBT-V1P2G4 belongs to the category of integrated circuits (ICs) specifically designed for battery management.

Use

This product is primarily used for monitoring and controlling rechargeable batteries in various electronic devices, such as laptops, smartphones, and electric vehicles.

Characteristics

• Integrated circuit for battery management
• Monitors battery voltage, current, and temperature
• Controls charging and discharging processes
• Provides accurate battery capacity estimation
• Supports communication protocols like I2C and SMBus

Package

BQ2085DBT-V1P2G4 comes in a small form factor package, typically a 20-pin TSSOP (Thin Shrink Small Outline Package).

Essence

The essence of this product lies in its ability to accurately monitor and control battery parameters, ensuring optimal performance and safety.

Packaging/Quantity

The product is usually packaged in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Input Voltage Range: 2.7V to 3.6V
• Operating Temperature Range: -40°C to +85°C
• Communication Interface: I2C, SMBus
• Battery Capacity Measurement Accuracy: ±1%
• Supported Battery Chemistries: Li-Ion, Li-Polymer, NiMH

Detailed Pin Configuration

The BQ2085DBT-V1P2G4 IC has a total of 20 pins. Here is the detailed pin configuration:

1. VSS - Ground
2. SDA - I2C Data Line
3. SCL - I2C Clock Line
4. ALERT - Interrupt Output
5. TS1 - Temperature Sense Input 1
6. TS2 - Temperature Sense Input 2
7. VDD - Power Supply
8. BAT - Battery Voltage Sense Input
9. SRP - System Reset Output
10. SDAVCC - I2C Data Line Power Supply
11. SCLVCC - I2C Clock Line Power Supply
12. VSS - Ground
13. VSS - Ground
14. VSS - Ground
15. VSS - Ground
16. VSS - Ground
17. VSS - Ground
18. VSS - Ground
19. VSS - Ground
20. VSS - Ground

Functional Features

• Accurate battery voltage, current, and temperature monitoring
• Charging and discharging control for optimal battery performance
• Integrated protection features like overvoltage and undervoltage protection
• Gas gauge functionality for accurate battery capacity estimation
• Support for multiple battery chemistries
• Configurable alarm and interrupt settings

Advantages and Disadvantages

Advantages

• Precise battery management for enhanced performance and safety
• Compatibility with various battery chemistries
• Flexible communication interface options
• Integrated protection features for battery longevity

Disadvantages

• Relatively complex pin configuration
• Requires proper programming and calibration for optimal performance
• Limited availability of alternative models from different manufacturers

Working Principles

The BQ2085DBT-V1P2G4 operates by continuously monitoring the battery voltage, current, and temperature. It uses this information to accurately estimate the battery's state of charge and capacity. The IC also controls the charging and discharging processes to ensure safe and efficient operation. Communication with the host system is established through the I2C or SMBus interface.

Detailed Application Field Plans

The BQ2085DBT-V1P2G4 finds extensive application in various electronic devices that utilize rechargeable batteries. Some of the key application fields include:

1. Laptops and Tablets: The IC ensures optimal battery performance and provides accurate capacity estimation, allowing users to monitor their device's battery life effectively.

2. Smartphones and Wearables: Battery management is crucial for these portable devices, and the BQ2085DBT-V1P2G4 helps maintain battery health and prolong overall battery life.

3. Electric Vehicles (EVs): The IC plays a vital role in managing the battery pack of electric vehicles, ensuring efficient charging and discharging, as well as accurate capacity monitoring.

Detailed and Complete Alternative Models

While the BQ2085DBT-V1P2G4 is a widely used battery management IC, there are alternative models available from different manufacturers. Some notable alternatives include:

• MAX17043: A highly integrated fuel gauge IC with advanced features for accurate battery monitoring.
• LTC6804: A multicell battery stack monitor IC suitable for applications requiring precise voltage measurement in multiple battery cells.
• BQ76940: A comprehensive battery management solution designed specifically for lithium-ion battery packs.

These alternative models offer similar