BQ24203DGNG4 - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24203DGNG4 belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for battery charging applications in various electronic devices such as smartphones, tablets, portable media players, and other portable electronic devices.

Characteristics

• The BQ24203DGNG4 is a highly efficient single-cell Li-Ion battery charger.
• It supports a wide input voltage range, making it suitable for different power sources.
• The device incorporates various safety features like thermal regulation, overvoltage protection, and short-circuit protection.
• It offers programmable charge current and termination settings, allowing flexibility in charging different battery capacities.
• The BQ24203DGNG4 also includes a system load sharing feature, enabling simultaneous charging and discharging.

Package and Quantity

The BQ24203DGNG4 is available in a small form factor package known as VSSOP-8. It is supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 3.9V to 6.45V
• Charge Voltage Range: 3.5V to 4.44V
• Programmable Charge Current: Up to 2A
• Operating Temperature Range: -40°C to +85°C
• Package Type: VSSOP-8

Pin Configuration

The BQ24203DGNG4 has the following pin configuration:

1. EN (Enable)
2. STAT (Status)
3. PG (Power Good)
4. TS (Thermal Sense)
5. ISET (Charge Current Setting)
6. VBUS (Input Supply Voltage)
7. GND (Ground)
8. BAT (Battery Connection)

Functional Features

• Thermal Regulation: The BQ24203DGNG4 incorporates a thermal regulation feature that adjusts the charge current based on the device's temperature, ensuring safe charging.
• Overvoltage Protection: It provides protection against overvoltage conditions, safeguarding the battery and the connected device.
• Short-Circuit Protection: The IC includes short-circuit protection to prevent damage in case of a short circuit in the charging circuitry.
• Charge Termination: The device supports programmable charge termination settings, allowing precise control over the charging process.
• System Load Sharing: With the load sharing feature, the BQ24203DGNG4 enables simultaneous charging and discharging, providing power to the system even during charging.

Advantages and Disadvantages

Advantages

• High efficiency charging for single-cell Li-Ion batteries.
• Wide input voltage range allows compatibility with various power sources.
• Programmable charge current and termination settings offer flexibility.
• Safety features protect the battery and the device from potential risks.

Disadvantages

• Limited to single-cell Li-Ion battery charging applications.
• Requires additional external components for complete charging circuit implementation.

Working Principles

The BQ24203DGNG4 operates by regulating the charging current and voltage to ensure safe and efficient charging of single-cell Li-Ion batteries. It monitors the battery voltage, temperature, and charging status to adjust the charging parameters accordingly. The device employs a switching regulator to achieve high charging efficiency while minimizing power dissipation.

Detailed Application Field Plans

The BQ24203DGNG4 finds extensive application in various portable electronic devices, including but not limited to: - Smartphones - Tablets - Portable media players - Wearable devices - Bluetooth headsets - GPS devices

Alternative Models

For similar battery charging applications, alternative models to consider are: - BQ24210 - BQ24250 - BQ24075

These models offer similar functionality and features, providing alternatives based on specific requirements and design considerations.

In conclusion, the BQ24203DGNG4 is a highly efficient single-cell Li-Ion battery charger with programmable settings, safety features, and system load sharing capability. It finds application in a wide range of portable electronic devices, ensuring reliable and optimized battery charging.