BQ24024DRCR

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Power management integrated circuits (PMICs) are integrated circuits that are used in consumer electronics and home appliances in order to combine and configure power-related functions into a single integrated device. PMICs can be used for a variety of different applications, including battery charging, power conversion, voltage regulation, and other power-related functions. One example of a PMIC is the BQ24024DRCR, which is a battery charger that offers single cell Li-ion/Li-polymer charge management.

Application Field

The BQ24024DRCR is designed to charge single-cell lithium ion (Li-Ion) or Li-polymer batteries in portable electronic devices. Examples of such devices include handheld electronic devices such as smart phones, tablets and digital cameras. The BQ24024DRCR has a very low stand-by power consumption of 40uA, allowing it to be used in portable devices while consuming minimal power.

The BQ24024DRCR offers a wide range of charge current settings, up to 1.5A, making it suitable for a wide range of applications. Furthermore, the BQ24024DRCR has several safety features, such as over-voltage and over-temperature protection, making it a safe solution for battery charging.

Working Principle

The BQ24024DRCR is a buck-boost converter and charge management IC that works in three stages. The first stage is the pre-charge stage, in which the charger applies a low current to the battery. The charger then enters the constant-current charge stage, in which it supplies the battery with a constant current. This stage continues until the battery reaches the regulation voltage set by the charge settings.

Once the battery reaches the regulation voltage, the BQ24024DRCR enters the constant-voltage charge stage, in which the charger supplies a constant voltage to the battery. The constant voltage is maintained until the charging current drops to a preset value, at which point the charge is complete. The BQ24024DRCR also features a thermistor input, which is used to monitor and adjust the charge current depending on the temperature of the battery.

Conclusion

The BQ24024DRCR is a PMIC battery charger designed for single-cell Li-Ion/Li-polymer battery applications. The charger is able to supply up to 1.5A of charge current and has several safety features to protect the battery during charging. The charger operates in three stages: pre-charge, constant-current charge, and constant-voltage charge. The BQ24024DRCR\'s low stand-by power consumption and wide range of charge current settings make it a suitable choice for a variety of portable electronic devices.

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