The Texas Instruments BQ24140YFFR is a highly efficient, single-cell lithium-ion battery charger designed for a wide range of portable applications. This integrated circuit (IC) is engineered to deliver precise charging capabilities and extend the life of the battery, ensuring that devices remain powered for longer periods.

Key Features

• Charge Voltage Regulation: The BQ24140YFFR offers accurate charge voltage regulation up to 4.2V, which is essential for maintaining the longevity and safety of lithium-ion batteries.
• Programmable Charge Current: Users can program the charge current up to 1.5A depending on the requirements of the specific application, allowing for flexible and efficient charging.
• High-Efficiency Operation: With an integrated synchronous fixed-frequency PWM controller operating at 1.1MHz, the device ensures high-efficiency power conversion, reducing heat generation and improving overall system performance.
• Integrated Power FETs: The BQ24140YFFR includes internal power FETs to minimize external component count, which simplifies the design and reduces the overall footprint of the charging solution.
• Thermal Regulation: To protect against overheating, the device features thermal regulation that reduces charge current automatically if the die temperature exceeds a preset threshold.
• Charge Status Indicators: It provides charge status and fault condition indicators to assist in monitoring the charging process and ensuring safe operation.

Applications

The BQ24140YFFR is ideal for a variety of portable devices such as smartphones, tablets, digital cameras, and other USB-powered gadgets. Its compact size and comprehensive feature set make it a versatile choice for designers looking to incorporate reliable charging capabilities into their products.

Technical Specifications

• Input Voltage Range: 4.5V to 12V
• Output Charge Voltage: 4.2V (±1%)
• Programmable Charge Current: Up to 1.5A
• Operating Frequency: 1.1MHz
• Package: 20-bump DSBGA (YFF)
• Integrated Protections: Overvoltage, thermal, short-circuit, and overcurrent protection

The BQ24140YFFR from Texas Instruments represents a state-of-the-art solution for charging single-cell lithium-ion batteries with its advanced features and robust protections, ensuring both efficiency and safety in portable electronic designs.