BQ24200DGNG4 - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24200DGNG4 belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This IC is primarily used for managing and controlling the charging process of rechargeable batteries, ensuring safe and efficient charging.

Characteristics

• The BQ24200DGNG4 offers a compact and highly integrated solution for battery charging.
• It supports various battery chemistries, including lithium-ion (Li-ion), lithium-polymer (Li-Po), and nickel-metal hydride (NiMH).
• The IC incorporates advanced charging algorithms and safety features to protect the battery and prevent overcharging or overheating.
• It provides a high level of accuracy in voltage and current regulation during the charging process.
• The BQ24200DGNG4 is designed to operate with a wide input voltage range, making it suitable for various power sources.

Package and Quantity

The BQ24200DGNG4 is available in a small form factor package, such as an 8-pin VSSOP (Very Small Outline Package). It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 3.9V to 6.45V
• Charging Voltage Range: 3.5V to 4.44V
• Charging Current Range: Up to 2A
• Operating Temperature Range: -40°C to +85°C
• Integrated Safety Features: Overvoltage protection, overcurrent protection, thermal regulation, and battery temperature monitoring.

Pin Configuration

The BQ24200DGNG4 has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. TS: Battery temperature sense pin
4. STAT: Status output pin
5. ISET: Charging current setting pin
6. PG: Power good output pin
7. VBAT: Battery voltage output pin
8. VOUT: Output voltage pin

Functional Features

• Constant Current (CC) and Constant Voltage (CV) charging modes for optimal battery charging.
• Automatic detection of the battery type and selection of appropriate charging parameters.
• Thermal regulation to prevent overheating during charging.
• Charge termination based on battery voltage and current thresholds.
• Dynamic power management to optimize charging efficiency.

Advantages and Disadvantages

Advantages

• Highly integrated solution, reducing external component count and PCB space requirements.
• Wide input voltage range allows compatibility with various power sources.
• Supports multiple battery chemistries, providing flexibility in application.
• Advanced safety features protect the battery from overcharging and overheating.
• Accurate voltage and current regulation ensures efficient charging.

Disadvantages

• Limited charging current compared to some high-power applications.
• Requires additional external components for complete charging system implementation.
• Not suitable for applications requiring very low standby power consumption.

Working Principles

The BQ24200DGNG4 operates by monitoring the battery voltage, current, and temperature during the charging process. It adjusts the charging parameters accordingly to ensure safe and efficient charging. The IC uses a combination of CC and CV charging modes to deliver the appropriate amount of current and voltage to the battery. Once the battery reaches the desired voltage or current threshold, the charging process is terminated to prevent overcharging.

Detailed Application Field Plans

The BQ24200DGNG4 finds applications in various portable electronic devices, such as smartphones, tablets, digital cameras, and portable gaming consoles. It is also used in power banks, wireless headphones, and other battery-powered devices that require efficient and reliable charging.

Detailed Alternative Models

1. BQ24201DGNG4: Similar to BQ24200DGNG4, but with a higher charging current capability of up to 3A.
2. BQ24202DGNG4: Similar to BQ24200DGNG4, but with additional USB On-The-Go (OTG) functionality.
3. BQ24203DGNG4: Similar to BQ24200DGNG4, but optimized for single-cell Li-ion battery charging.

These alternative models offer similar functionalities with slight variations in specifications and features, allowing designers to choose the most suitable option for their specific application requirements.

In conclusion, the BQ24200DGNG4 is a highly integrated IC designed for efficient and safe battery charging applications. Its compact size, wide compatibility, and advanced features make it an ideal choice for various portable electronic devices and power banks.