BQ24103ARHLT Integrated Circuits (ICs)

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BQ24103ARHLT is a single-cell overvoltage protection linear charger specially designed for portable products. It combines a 1A linear charging circuit and a programmable overvoltage charge cutoff circuit. In addition, it also provides thermal regulation and overcurrent protection, which makes it ideal for use in space-constrained applications. BQ24103ARHLT is ideal for charging single-cell Li-ion and Li-polymer batteries.

In the application field of BQ24103ARHLT, it is widely used in various portable products, such as portable consumer media players, GPS, mobile phones, camcorders, and so on. Depending on the device configuration, BQ24103ARHLT can support a wide range of charging parameters from 4.5V/1.5A to 6.3V/2A.

BQ24103ARHLT has a simple working principle. It uses a low-voltage operation charger circuit to control the voltage and current of the battery. The low-voltage control signal is sent to the charger control circuit through an external transistor of the battery. The signal is used to control the output voltage of the battery by sensing the charge current and the remaining charge of the battery. When the battery is connected to the charger, the charger control circuit will start adjusting the output voltage according to the charge current and the remaining charge of the battery. The output voltage will be adjusted until it reaches the maximum output voltage of the battery. At this time, the charger will stop adjusting the output voltage and stop charging the battery.

The overvoltage protection feature is an important feature of BQ24103ARHLT. It can monitor the voltage level of the battery and provide overvoltage protection. Once the voltage of the battery rises above the set threshold, the overvoltage protection circuit will start to limit the voltage level of the battery, preventing the battery from being overcharged.

In addition, the charger also has thermal regulation and overcurrent protection functions, which is controlled by a single external transistor. The thermal regulation feature is used to prevent the charger from overheating, and the overcurrent protection feature is used to protect the battery from overcharging.

BQ24103ARHLT is a powerful and reliable linear charger, primarily designed for single-cell overvoltage protection. With its integrated overvoltage protection, thermal regulation and overcurrent protection, it is ideal for use in space-constrained applications, such as portable consumer media players, GPS devices, mobile phones, camcorders, and more.

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