A6279ELW-T

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PMICs (Power Management Integration Circuits) are becoming increasingly popular for use in powering and managing LEDs (Light-Emitting Diodes). This includes LED drivers, which serve to control the voltage and current that power an LED. The A6279ELW-T is an example of one such LED driver that can be used in LED applications. This article will discuss the application field of the A6279ELW-T, as well as its working principle.

Application Field of A6279ELW-T

The A6279ELW-T is intended for use in low-voltage, low-power LED applications. It is capable of powering up to 6 series LEDs simultaneously, and can handle input voltages from 1.2V to 5.5V. The output voltage of the A6279ELW-T can be adjusted via a single external resistor so that it is capable of providing 12 different drive current levels. Its internal high temperature shutdown circuit also provides added protection by automatically shutting down the device in the event of an over-temperature condition. It is designed to have low input current, low standby current and high efficiency, making it well-suited for battery-powered applications.

Working Principle of A6279ELW-T

The A6279ELW-T is capable of providing high efficiency with current mode control. It uses a forked topology in which the LED current is sourced from the output capacitor and the LED voltage is regulated from the input voltage. This ensures that the LED current is always kept constant, regardless of changes in the input or output voltage. This also ensures that the LED driver has a fast transient response, thus providing good lighting quality for the LED. Additionally, the A6279ELW-T also incorporates an over-temperature protection circuit and over-current protection circuit to help protect the device from damage in extreme conditions.

In summary, the A6279ELW-T is an LED driver designed to provide high efficiency LED lighting. It is capable of powering up to 6 series LEDs and provides adjustable drive current levels via an external resistor. It is designed to have low input and standby current requirements, making it suitable for battery-powered applications. It also employs current-mode control to ensure a constant LED current, good transient response and reliable protection features.

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