The BQ24109RHLR is a highly efficient, single-cell, Li-ion battery charger designed by Texas Instruments to meet the needs of a variety of portable applications. This integrated circuit (IC) is engineered to operate from either a USB port or an AC adapter and supports a wide range of input voltages.

Key Features

• Input Voltage Range: The device is capable of handling an input voltage range from 4.5V to 28V, making it versatile for different power sources.
• Charge Current: It offers programmable charge current up to 1.5A through an external resistor, allowing for fast charging capabilities.
• Charge Voltage: The BQ24109RHLR provides a precise charge voltage regulation up to 4.2V, ensuring the battery is charged safely and efficiently.
• Power Efficiency: This charger is designed for high power efficiency, which is crucial for battery-operated devices to maximize battery life.
• Charge Termination: It includes an automatic charge termination feature that stops the charging process once the battery is fully charged, protecting the battery from overcharging.
• Thermal Regulation: The BQ24109RHLR integrates a thermal regulation mechanism to prevent overheating during the charging process.
• Status Indicators: The IC includes status pins that provide real-time feedback on the charging process through LED indicators or other signaling methods.

Applications

The charger is ideal for a wide range of portable applications, such as:

• Smartphones and Tablets
• Digital Cameras and Portable Media Players
• Handheld Devices and Portable Gaming Systems
• Bluetooth Headsets and Portable Power Banks

Package and Availability

The BQ24109RHLR comes in a compact 20-pin QFN package, making it suitable for space-constrained applications. Its small footprint also allows for seamless integration into existing designs. Texas Instruments ensures availability and support for this product, providing detailed technical documentation and customer service.