BQ24650RVAT

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The BQ24650RVAT is an integrated switching synchronous charger for two- to three-cell Li-Ion and Li-Polymer batteries. It is capable of delivering up to 4 amps of charging current. The BQ24650RVAT is designed to simplify charging applications as it integrates input voltage selection, battery voltage monitoring, charge current programming and charge termination detection. It is a PMIC (Power Management Integrated Circuit) specifically designed for battery charging applications.

The BQ24650RVAT is used in a range of battery applications such as mobile phones, tablet PCs, digital cameras and other handheld devices. The device is capable of detecting the connected AC adapter voltage, battery voltage and battery temperature. The BQ24650RVAT also monitors the current flowing into or out of the battery and can detect charge termination and charge restart depending on battery voltage, temperature and other conditions.

The BQ24650RVAT is an advanced synchronous charger for two- to three-cell Li-Ion and Li-Polymer batteries. It has a power conversion efficiency of up to 94% and is capable of supplying up to 4Amps of charge current. The device is also equipped with input voltage selection preventing users from connecting incorrect AC adapters to the device.

The BQ24650RVAT supports both constant current and constant voltage charging modes, offering flexibility for the application. The charger can also accept wide-range input voltages and supports a variety of battery configurations. The charging voltage can be adjusted via the EN bit of the charge current register to provide a cost efficient solution.

The BQ24650RVAT is an ideal choice for charging two- to three-cell Li-Ion and Li-Polymer batteries in a variety of applications. The device integrates power management, current monitoring and protection, and provides an efficient, low-cost and reliable solution.

The working principle of the BQ24650RVAT is based on a single-stage constant current/constant voltage (CC/CV) protocol. When the input voltage is applied, the charger detects the battery voltage and starts to charge the battery at a constant current. The current is set by the programmable ICHG register. When the battery reaches the charge voltage threshold, the charger switches to constant voltage mode, limiting the charge current to maintain the battery voltage. The device monitors the battery voltage and current to ensure charge termination at the set charge voltage. Finally, the charger enters the standby mode when the charge current drops below the programmableICT_S threshold.

The BQ24650RVAT is a highly integrated PMIC (Power Management Integrated Circuit) designed for space-constrained battery charging applications. It integrates input voltage selection, battery voltage monitoring, charge current programming and charge termination detection, simplifying the design of AC adapter charger and battery charger applications. The device is ideal for charging two- to three-cell Li-Ion and Li-Polymer batteries and offers an efficient, low-cost and reliable solution.

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