Texas Instruments

BQ25504RGTR

The BQ25504RGTR is a highly integrated, high efficiency, step-down battery charging chip with a system power path management controller from Texas Instruments. It is designed to provide a complete charging solution for single-cell lithium-ion and lithium-polymer batteries, and is suitable for a wide range of applications, including portable devices, power banks, and energy harvesting systems.

Key Features:

1. High Efficiency: The BQ25504RGTR offers high efficiency charging with a typical efficiency of up to 93%, which helps to minimize power dissipation and reduce the need for heat sinks.
2. Wide Input Voltage Range: The device can operate with input voltages ranging from 3.5V to 5.5V, making it suitable for a variety of power sources, including USB, AC/DC adapters, and solar panels.
3. Constant Current/Constant Voltage Charging: The BQ25504RGTR provides constant current and constant voltage charging with programmable charge voltage and current limits, allowing for precise control of the charging process.
4. Power Path Management: The device includes a power path management controller that enables the system to efficiently manage power from multiple sources, such as a battery and an external power supply.
5. I2C Programmability: The BQ25504RGTR features an I2C interface that allows for programmability and configuration of various parameters, including charge voltage, charge current, and power path management settings.
6. Thermal Protection: The device includes thermal protection features, such as over-temperature shutdown and thermal regulation, to ensure safe and reliable operation.
7. Small Package: The BQ25504RGTR is available in a compact 20-pin QFN package, making it suitable for space-constrained applications.

Applications:

1. Portable Devices: The BQ25504RGTR is ideal for charging batteries in portable devices, such as smartphones, tablets, and wearables.
2. Power Banks: The device can be used to charge batteries in power banks, providing efficient charging and power path management.
3. Energy Harvesting Systems: The BQ25504RGTR is suitable for energy harvesting applications, such as solar-powered devices, where efficient power management is critical.
4. Medical Devices: The device can be used in medical devices that require efficient and reliable battery charging.
5. Industrial Equipment: The BQ25504RGTR can be used in industrial equipment that relies on single-cell lithium-ion or lithium-polymer batteries for power.

In summary, the BQ25504RGTR from Texas Instruments is a highly integrated, high efficiency charging and power management solution for single-cell lithium-ion and lithium-polymer batteries. Its wide input voltage range, programmability, and thermal protection features make it suitable for a variety of applications, including portable devices, power banks, energy harvesting systems, medical devices, and industrial equipment.