BQ27520YZFT-G1

Product Overview

Category

The BQ27520YZFT-G1 belongs to the category of integrated circuits (ICs) specifically designed for battery management.

Use

This IC is primarily used for fuel gauging and protection in single-cell Li-Ion battery packs.

Characteristics

• The BQ27520YZFT-G1 offers accurate battery capacity estimation, which is crucial for monitoring battery life.
• It provides protection features such as overvoltage, undervoltage, and overcurrent protection, ensuring safe operation of the battery pack.
• This IC supports communication protocols like I2C, allowing easy integration into various systems.
• It has a low power consumption mode, enabling efficient energy management.

Package

The BQ27520YZFT-G1 comes in a small form factor package, known as Thin Shrink Small Outline Package (TSSOP).

Essence

The essence of the BQ27520YZFT-G1 lies in its ability to accurately estimate battery capacity and provide essential protection features for single-cell Li-Ion battery packs.

Packaging/Quantity

This IC is typically packaged in reels and is available in quantities suitable for both prototyping and mass production.

Specifications

• Operating Voltage: 2.7V to 4.5V
• Communication Interface: I2C
• Battery Capacity Estimation Accuracy: ±1%
• Protection Features: Overvoltage, Undervoltage, Overcurrent
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The BQ27520YZFT-G1 has a total of 16 pins. Here is the detailed pin configuration:

1. VSS - Ground
2. SDA - I2C Data Line
3. SCL - I2C Clock Line
4. VDD - Power Supply
5. TS - Temperature Sense Input
6. BAT - Battery Voltage Sense Input
7. SRP - System Reset Output
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. VSS - Ground

Functional Features

1. Accurate Fuel Gauging: The BQ27520YZFT-G1 provides precise estimation of battery capacity, allowing users to monitor the remaining charge accurately.
2. Protection Mechanisms: It offers overvoltage, undervoltage, and overcurrent protection, safeguarding the battery pack from potential damage.
3. Low Power Consumption: This IC has a low power mode, minimizing energy consumption and extending battery life.
4. I2C Communication: The BQ27520YZFT-G1 supports the widely used I2C communication protocol, enabling seamless integration into various systems.

Advantages and Disadvantages

Advantages

• Accurate battery capacity estimation ensures reliable monitoring of battery life.
• Comprehensive protection features enhance the safety and longevity of the battery pack.
• Low power consumption mode optimizes energy management.
• I2C communication interface allows for easy integration into different systems.

Disadvantages

• Limited to single-cell Li-Ion battery packs, not suitable for multi-cell configurations.
• Requires additional external components for complete battery management functionality.

Working Principles

The BQ27520YZFT-G1 utilizes advanced algorithms to estimate battery capacity based on voltage, current, and temperature measurements. It continuously monitors these parameters to provide accurate fuel gauging. Additionally, it incorporates protection mechanisms that actively monitor voltage and current levels, triggering appropriate actions to prevent overvoltage, undervoltage, and overcurrent conditions.

Detailed Application Field Plans

The BQ27520YZFT-G1 finds applications in various fields, including but not limited to:

1. Portable Electronics: It is suitable for smartphones, tablets, and other portable devices that utilize single-cell Li-Ion battery packs.
2. Wearable Devices: The IC can be integrated into smartwatches, fitness trackers, and other wearable gadgets.
3. Medical Devices: It can be used in medical equipment that relies on single-cell Li-Ion batteries for power.
4. Internet of Things (IoT): The BQ27520YZFT-G1 is well-suited for IoT devices that require accurate fuel gauging and battery protection.

Detailed and Complete Alternative Models

1. BQ27421YZFR-G1: Similar to the BQ27520YZFT-G1, this IC offers fuel gauging and protection features for single-cell Li-Ion battery packs. It comes in a different package and has slightly different specifications.
2. MAX17043G+T: This IC also provides fuel gauging capabilities for single-cell Li-Ion batteries. It offers similar features and operates over a comparable