BQ27426YZFR

Product Overview

Category

The BQ27426YZFR belongs to the category of integrated circuits (ICs) and specifically falls under the battery management ICs.

Use

This product is primarily used for battery fuel gauge applications. It accurately measures the remaining capacity of a battery, providing crucial information for monitoring and managing battery usage.

Characteristics

• High accuracy: The BQ27426YZFR offers precise measurements of battery capacity, enabling accurate estimation of remaining charge.
• Low power consumption: This IC operates with minimal power consumption, ensuring efficient use of energy.
• Small package size: The BQ27426YZFR comes in a compact package, making it suitable for space-constrained applications.
• Advanced features: It incorporates advanced algorithms and features such as temperature compensation and voltage-based SOC tracking.

Package and Quantity

The BQ27426YZFR is available in a small form factor package, typically measuring 3mm x 3mm. It is commonly supplied in tape and reel packaging, with quantities varying based on customer requirements.

Specifications

• Operating voltage range: 2.5V to 4.8V
• Battery capacity measurement resolution: 1mAh
• Communication interface: I2C
• Temperature range: -40°C to +85°C
• Integrated EEPROM memory for data storage

Pin Configuration

The BQ27426YZFR has a total of 16 pins. Here is the detailed pin configuration:

1. VSS - Ground
2. VDD - Power supply voltage
3. SDA - I2C data line
4. SCL - I2C clock line
5. TS - Temperature sense input
6. BAT - Battery voltage sense input
7. VSS - Ground
8. VSS - Ground
9. VSS - Ground
10. VSS - Ground
11. VSS - Ground
12. VSS - Ground
13. VSS - Ground
14. VSS - Ground
15. VSS - Ground
16. VDD - Power supply voltage

Functional Features

• Accurate battery capacity measurement
• Temperature compensation for improved accuracy
• Voltage-based state-of-charge (SOC) tracking
• Overvoltage and undervoltage protection
• Integrated EEPROM for data storage
• Low-power sleep mode for energy efficiency

Advantages and Disadvantages

Advantages

• High accuracy in measuring battery capacity
• Compact package size suitable for space-constrained applications
• Advanced features like temperature compensation and voltage-based SOC tracking enhance performance
• Low power consumption ensures efficient use of energy

Disadvantages

• Limited compatibility with certain battery chemistries or configurations
• Requires proper calibration for optimal performance

Working Principles

The BQ27426YZFR operates by monitoring the battery voltage, current, and temperature to accurately estimate the remaining battery capacity. It utilizes advanced algorithms to compensate for temperature variations and track the state-of-charge based on voltage measurements. The integrated EEPROM allows storing important battery information for future reference.

Detailed Application Field Plans

The BQ27426YZFR finds application in various fields, including: 1. Portable electronic devices: Enables accurate battery capacity monitoring in smartphones, tablets, and wearables. 2. Electric vehicles: Provides precise battery capacity estimation for electric cars and bikes. 3. Energy storage systems: Facilitates efficient management of battery banks in renewable energy systems. 4. Medical devices: Ensures reliable battery monitoring in critical medical equipment.

Alternative Models

For those seeking alternatives to the BQ27426YZFR, the following models offer similar functionality: 1. BQ27421YZFR 2. BQ27425YZFR 3. BQ27441YZFR 4. BQ27445YZFR

These alternative models can be considered based on specific application requirements and compatibility with battery chemistries.

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