BQ24108RHLRG4

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PMIC (power management integrated circuit) is a type of integrated circuit (IC) used in electronic systems to manage the power supply. PMICs can be found on almost all kinds of digital devices today, especially mobile devices such as smartphones, tablets and laptops. They are used to regulate the power supply from sources like power adapter, battery, and energy harvesting. One PMIC, BQ24108RHLRG4, is a high voltage integrated Li-ion/Li-polymer battery charger with a wide input voltage range, providing high accuracy current regulation for different battery sizes.

BQ24108RHLRG4 contains an embedded PowerPath(TM) managementsolution and provides both the high frequency switched mode power supply (SMPS) power stage and the linear charging constant current/constant voltage (CC/CV) power stage, required by the Li-ion/Li-polymer batteries.

The SMPS controller operates in pulse frequency modulation (PFM) at light load or pulse width modulation (PWM) at full load in order to switch rapidly between charging or discharging the battery and working as power path to supply the system. Additionally, the SMPS power stage is designed to work with wide input voltage range (V_IN)V_IN between 2.5V and 7.4V to support both 5V-USB and dedicated adapter types.

The linearcharging controller isa controlled constant current (CC) and constant voltage (CV) charger with precision current regulation. The charger provides a CVcurrent accurate to ±1.5% over temperature by using a voltage reference and temperature compensation. The linear charger is tailored for the typicalconstant current/constant voltage chargingprofile of Li-ion/Li-polymer batteries. The charger is able to completely charge small and large battery capacities through the configurable charge current range up to 1.5A. It also features adjustable ChargeTermination Voltage and Charge TerminationTimer.

The BQ24108RHLRG4 also implements charge optimizetime, input current dynamic limit, and safety features, such asthermal protection, input overvoltage or undervoltage protection, battery short circuit protection, and battery reverse voltage protection.

BQ24108RHLRG4 is an ideal solution for portable electronic devices, such as smartphones, tablets, portable computing, musicplayers and gaming, which require one-cell Li-ion/Li-polymer battery chargers with high accuracy current regulation, robust protections and wide input voltage range.

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