Overview of Texas Instruments BQ24100RHLRG4

The Texas Instruments BQ24100RHLRG4 is a highly integrated and efficient standalone synchronous switch-mode battery charge controller designed for efficient charging of single-cell Li-ion and Li-polymer batteries. This advanced charging device is ideal for portable applications where space and power efficiency are at a premium.

Key Features

• High Efficiency: The BQ24100RHLRG4 offers a high-efficiency charging solution with its synchronous fixed-frequency PWM controller that operates at 1.1 MHz. This high switching frequency allows for the use of small external components, reducing the overall footprint and cost of the charging solution.
• Charge Control: It features programmable charge parameters including pre-charge, fast charge, and termination current thresholds, allowing for customization to specific battery requirements and ensuring the longevity and safety of the battery.
• Integrated Power FETs: With integrated power FETs, this device minimizes external component count, which not only saves space but also simplifies the design and manufacturing process.
• Status Indicators: The BQ24100RHLRG4 includes status pins that provide real-time charge status to indicate whether the battery is pre-charging, fast charging, or charge is complete. This is crucial for user interface design and system monitoring.
• Protection Features: It incorporates multiple safety features including thermal regulation, over-voltage protection, and a timer for charge termination to protect the battery and the charging system from damage.
• Low Power Modes: To conserve power, the device offers a low quiescent current and enters a low power mode when the input voltage drops below the battery voltage.

Applications

The BQ24100RHLRG4 is versatile and can be used in a wide array of portable devices such as smartphones, tablets, digital cameras, and other handheld electronics that require efficient and reliable battery charging. Its small size and high level of integration make it particularly well-suited for compact devices.

Package and Availability

This charge controller is available in a compact 20-pin QFN package, ensuring a minimal footprint on the PCB. The BQ24100RHLRG4 is part of Texas Instruments' extensive portfolio of battery management solutions and is supported by the company's comprehensive technical documentation and design resources.