BQ24079RGTR

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PMIC (Power Management Integrated Circuit) - Battery Chargers are designed to power up and protect the rechargeable batteries of mobile devices, including laptops, tablets and smartphones. The BQ24079RGTR is one such PMIC, specifically designed to charge a wide range of lithium-ion, lithium polymer and NiMH batteries. It features an integrated battery buck, which means it can provide both a buck and boost circuit, and has automatic input current limitation to protect the system from over-current and over-voltage hazards. The inputs and outputs can be configured via a serial peripheral interface (SPI).

The BQ24079RGTR is a 3-pin charge pump with a 900mAh maximum continuous output current and a peak output current of up to 2.6 A. The maximum input voltage is 4.2V, with an adjustable output voltage range from 0.4V to 4.4V. It comes with an integrated circuit protection feature that protects the system from over-current, over-voltage and short-circuit conditions. It has an adjustable soft-start which helps to reduce input surge current at system start-up.

The BQ24079RGTR is designed to meet the industry’s most demanding requirements for power efficiency, safety and reliability. The output voltage can be adjusted via PMBUS commands, and the BQ24079RGTR also supports pulse charging to ensure optimal charge performance. It also supports adjustable charge termination criteria and pre-charge qualification. It also allows the user to adjust the size of the cells connected to the device, and it can be used as a linear charger with an external pass transistor.

The BQ24079RGTR operates in several application fields such as smart personal electronic devices, portable gaming systems, navigation systems and medical equipment. Its wide input voltage range and adjustable output voltage enable it to be used for various types of applications. The integrated auto-recharge measurement circuit ensures accurate recharge fee measurement, and the integrated circuit protection prevents the system from over-current, over-voltage and short-circuit hazards.

The BQ24079RGTR utilizes a Charge Pump Charge Controller as its working principle. The charge pump uses a standard buck topology along with an adjustable pre-charge current and recharge voltage thresholds. When the battery voltage is below the regulated voltage threshold, the charge pump begins operation. A PWM buck stage is used to boost the input voltage, and the boost voltage is regulated by a control loop. When the battery voltage reaches the recharge voltage threshold, the PWM controller will reduce or cut the current to stop the charging.

The BQ24079RGTR is a versatile power management IC that is designed to offer efficient charging and protection of a wide range of elements. Its adjustable soft-start feature helps to reduce input surge current, making it suitable for use in demanding applications. The integrated circuit protection provides protection against over-current, over-voltage and short-circuit conditions. The adjustable output voltage range makes it suitable for various types of applications.

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