BQ25100BYFPR

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Modern devices, such as smartphones and other mobile devices, require an efficient and effective power management system. PMIC, or Power Management ICs, are an integral part of such power management systems. One of the most extensively used PMICs in the field of Battery Chargers is the BQ25100BYFPR.

The BQ25100BYFPR is a high-efficiency, high-voltage, synchronous, constant current/constant voltage (CC/CV) linear charger designed for fast charging of small cell lithium-ion (Li-ion) and Li-polymer (Li-poly) battery packs. The device is capable of providing charging current up to 1.5A and supports battery voltage from 4.1V to 6.3V. It also supports fully adjustable voltage, current, and temperature limits for fast and safe battery charging.

The BQ25100BYFPR offers excellent features such as integrated power MOSFETs, battery-short protection, auto-recharge with pre-defined voltage level, battery pack sensing, safety timer and adjustable fast-charge current. It also includes adapter detect function to detect power-adapter/charger before starting the charging process. The device also has thermal regulation and dynamic power-path management which enables the device to manage limited input power.

The working principle of the BQ25100BYFPR is based on two independent switching regulators: a buck regulator and a linear regulator. The buck regulator is used to reduce the input voltage to a level that the linear regulator can handle and the linear regulator is used to regulate the battery voltage. During the charging process, the buck regulator will be controlling the voltage level of the battery while the linear regulator controls the current. The safety timer will be active during the charging process and it will turn off the device once the safety timer limit is reached.

The BQ25100BYFPR PMIC is a highly effective and reliable charging solution for mobile devices with small cell Li-ion and Li-polymer battery packs. It is well suited for applications such as smartphones, PDAs, MP3 players, digital cameras, portable gaming consoles, mobile medical devices, and power tools. It offers excellent features such as integrated power MOSFETs, battery-short protection, adjustable fast-charge current, auto-recharge with pre-defined voltage level, safety timer, and battery pack sensing. Its integrated buck and linear regulators allow for efficient and effective power management.

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