BQ25100YFPR Integrated Circuits (ICs)

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The BQ25100YFPR is a highly integrated single-cell, charge-management solution designed mainly for product applications powered by a rechargeable Li-ion battery or a polymer cell. It has high efficiency, a wide input range, a low quiescent current, and a wide range of system protections. This makes the BQ25100YFPR suitable for use in handheld equipment, such as smartphones, digital cameras and wearable devices.

The BQ25100YFPR integrates USB OTG and Type-C PD3.0 functions that support BC1.2 and USB PD3.0 for programmable charging power. It is used in systems that require multiple charge current settings and a choice of input voltage to provide dual-mode charging. Dual-mode charging allows for higher power of up to 15W, more efficient charging, and better battery management in applications Powered by USB OTG/Type-C PD3.0.

The BQ25100YFPR is a highly integrated, single-cell charging solution that features a buck-boost DC/DC converter, input current limiting, and pre-charge, fast-charge, and constant-voltage and constant-current stages. In addition, the BQ25100YFPR is integrated with safety, charge status and temperature-sensing circuitry. The BQ25100YFPR also provides low-battery-detection (LBD) and charge-termination detections, ensuring an efficient and safe charging system.

The BQ25100YFPR works by using a variable voltage and current source, which is determined by the system programmer. This variable voltage and current allows for a wide range of charge settings, from the pre-charge, fast-charge, and constant-voltage and constant-current stages. During the pre-charge stage, the BQ25100YFPR decreases the cell\'s variability and prevents overloading, allowing for a safe and efficient charge. During the fast-charge stage, the BQ25100YFPR supplies the required current and voltage to the cell, while monitoring the temperature and voltage to ensure that the cell remains in an optimal charge state. Once the fast-charge stage is completed, the BQ25100YFPR enters the constant-voltage and constant-current stages, where the charge is completed at the programmed settings.

The BQ25100YFPR also provides reverse-current protection, which prevents current from flowing back into the input, protecting the cell from overcharging and damaging the system. Additionally, the BQ25100YFPR integrates over-temperature protection, which shuts down the charger if the temperature exceeds a safe threshold. Finally, the BQ25100YFPR includes a timer-based charge termination feature, which turns off the charger when the timer reaches the programmed time limit. This feature ensures that the cell is not overcharged and prevents damage to the cell.

The BQ25100YFPR is an excellent choice for applications that require maximum battery life and safety, as it provides a highly efficient, and safe charging solution. It is designed to meet the needs of high power applications while minimizing power consumption. With its wide input voltage range, low quiescent current, and comprehensive protection features, the BQ25100YFPR is an ideal solution for any application powered by Li-Ion or polymer cells.

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