BQ24079RGTT

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Texas Instruments’ BQ24079RGTT is a power management integrated circuit (PMIC) for battery chargers. This wide input voltage single-input battery charger is an ideal choice for applications low power cordless applications and industrial systems. Target system applications for this PMIC include cordless drills, portable power tools and other hand-held equipment.

BQ24079RGTT contains a state-of-the-art high efficiency switching power supply that helps reduce power consumption and energy costs. This single-input battery charger also features an optimized voltage-detection loop, programmable charging current, dual-stage charging cycle, and support of LLCC and supercapacitor charge-management features. This combination makes BQ24079RGTT a very versatile and easy to use power management IC with a wide range of applications and operations.

The BQ24079RGTT core circuit consists of a buck-boost DC-DC converter, an LDO (low dropout) regulator and a charge controller. The buck-boost DC-DC converter allows for energy efficient power supply design. It provides the input to the LDO regulator, generating a constant output voltage and optimizing the power consumption of the circuit. The LDO regulator and the charge controller manage the charge current and monitor the voltage of the battery.

The BQ24079RGTT features a programmable 0.25 A to 1 A charging current and a dual-stage charging cycle. During the first stage of the charging cycle, the charger provides the battery with a current of up to 1 A to bring the battery voltage up to the target voltage. During the second stage, the charger reduces the current output to maintain the target voltage. This two-stage charging cycle helps prolong battery life and reduce power consumption.

The BQ24079RGTT also supports LLCC (linear lithium-ion capacitor) and supercapacitor charge management features. The LLCC feature allows the charger to sense the battery voltage and adjust charging parameters to maintain the ideal charging voltage, current, and temperature. The supercapacitor feature allows the charger to detect and adjust when the battery has reached its maximum charge capacity.

The BQ24079RGTT is a power management IC for battery chargers, designed to meet the requirements of low power cordless and industrial applications. It features a wide input voltage range, with a programmable 0.25 A to 1 A charging current and dual-stage charging cycle. It also supports LLCC and supercapacitor charge management features. This allows the charger to provide a more efficient, reliable and cost-effective charging cycle.

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