BQ24155RGYT

Product Overview

The BQ24155RGYT is a highly integrated single-cell Li-Ion battery charger for portable applications. It falls under the category of battery management ICs and is commonly used in various portable electronic devices such as smartphones, tablets, and portable media players. The BQ24155RGYT is known for its high efficiency, compact package, and advanced charging features. It is typically available in small outline packages (DSBGA) and comes in tape and reel packaging.

Characteristics

• High integration
• Fast charging capability
• Thermal regulation
• Overvoltage protection
• Under-voltage lockout
• Charge status indicators

Package

The BQ24155RGYT is available in a small 24-pin VQFN package, making it suitable for space-constrained designs.

Specifications

• Input Voltage Range: 4.5V to 17V
• Maximum Charge Current: 2A
• Termination Current: 10% of the fast charge current
• Precharge Threshold: 2.8V
• Charge Voltage: 4.2V
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The BQ24155RGYT features a 24-pin VQFN package with pins designated for input power, battery connections, system connections, and control signals. A detailed pin configuration diagram can be found in the product datasheet.

Functional Features

• Integrated power FETs for high efficiency
• USB On-The-Go (OTG) support
• Battery thermal regulation
• Programmable charge current
• JEITA-compatible temperature monitoring

Advantages and Disadvantages

Advantages

• High integration reduces external component count
• Fast charging capability
• Compact package size
• Advanced safety features

Disadvantages

• Limited to single-cell Li-Ion battery charging
• Higher cost compared to basic linear chargers

Working Principles

The BQ24155RGYT operates by regulating the charging current and voltage to the connected Li-Ion battery. It employs a switching regulator to achieve high efficiency and thermal regulation to ensure safe charging under various conditions.

Detailed Application Field Plans

The BQ24155RGYT is widely used in portable electronic devices such as smartphones, tablets, handheld gaming consoles, and portable medical devices. Its fast charging capability and advanced safety features make it suitable for applications where efficient and reliable battery charging is essential.

Detailed and Complete Alternative Models

• BQ24153
• BQ24157
• BQ24158
• BQ24159

In conclusion, the BQ24155RGYT is a highly integrated single-cell Li-IIon battery charger with advanced features, making it an ideal choice for portable electronic devices that require efficient and reliable battery charging.

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