TLC5949DBQR

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TLC5949DBQR, a step-down LED driver in Package QFN40, is designed to boost RV LDO to step down voltage up to 42V and provides an output dimming up to 0.9V. It is a highly integrated, cost-effective product designed by Texas Instruments. As a PMIC - LED Drivers, it is widely used in automotive, industrial and lighting applications.

Working Principle: The working principle of TLC5949DBQR is to use a boost regulator to step down the voltage applied to it. Initially, the application voltage is converted from 24V to 42V by a boost converter. Then, the converter synchronously steps down the voltage to 0.9V with a built-in step-down voltage regulator. Depending on the input current, the output current can be adjusted by the current-sensing circuitry and the output voltage will be limited at 0.9V. The output current is set to 4A by internal MOSFETs to ensure constant output current.

Application Fields: The TLC5949DBQR is ideal for automotive lighting, like headlamps and tail-lights. It can be used in industry lighting applications, like accent lighting and general illumination. The device also provides a dimming option when a low voltage is required. The device can be used in LED arrays to reduce power consumption. It is also suitable for household lighting, including garden lamps, wall lamps and other light fixtures. In addition, the TLC5949DBQR can be used in energy efficient power systems, such as solar energy panels and wind turbines.

The TLC5949DBQR is a highly integrated, cost-effective LED driver. It has high efficiency, high current and low voltage capability, making it suitable for a variety of LED lighting and automotive applications. Its design includes features that make it reliable and easy to use, and its package has a small form factor to provide flexibility in application design.

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