The BQ24157SYFFT by Texas Instruments is a highly integrated, efficient, and versatile single-cell Li-Ion battery charger designed to be implemented in a wide range of portable applications. This advanced power management IC is capable of operating with an input voltage range of 4.5 V to 6.5 V, making it suitable for USB-powered gadgets as well as standard adapters.

Key Features

• Highly Efficient Charging: The BQ24157SYFFT features an impressive switch-mode charge management which provides high efficiency during the charging process, thereby reducing the overall charging time and improving the user experience.
• Power-Flexibility: The device supports a wide range of input sources, from USB ports to AC adapters, offering flexibility in terms of power supply and ensuring that the device can be charged in a variety of settings.
• Integrated Power FETs: With internal power FETs, the charger minimizes external component count, which can lead to a reduction in overall design size and bill of materials cost.
• Intelligent Charge Control: The BQ24157SYFFT is equipped with an intelligent charge algorithm, including preconditioning and termination thresholds, to optimize battery performance and longevity.
• Thermal Regulation: To ensure safety and reliability, the charger has built-in thermal regulation that reduces charge current when the internal temperature of the chip exceeds a preset threshold.

Applications

With its compact size and comprehensive feature set, the BQ24157SYFFT is an ideal charging solution for a variety of portable devices such as smartphones, tablets, digital cameras, handheld gaming devices, and Bluetooth headsets.

Technical Specifications

• Input Voltage Range: 4.5 V to 6.5 V
• Charge Current: Programmable via an external resistor
• Battery Voltage Regulation: Up to 4.2 V (adjustable)
• Charge Status Indicators: LED or host processor
• Package: 20-bump, 2.50 mm x 2.50 mm YFF (DSBGA)

The BQ24157SYFFT from Texas Instruments is a sophisticated solution for designers looking to implement a reliable, high-performance charging system in their portable devices.