LX7175CLD-TR

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LX7175CLD-TR is a fixed switching frequency step-down DC/DC regulator with integrated power MOSFETs and a LEDs current sink, specifically designed for LED lighting applications, such as LED backlighting and LED driver applications. LX7175CLD-TR features adjustable frequency, adjustable output voltage and a programmable over-voltage lockout (OVP) limit.

The LX7175CLD-TR is designed to switch a DC step-down regulator with integrated power MOSFETs and LED current sink. Its advantage over a conventional step-down regulator is its high efficiency, compact footprint, and accurate current delivery.

LX7175CLD-TR application fields mainly include LED Backlight, LED driver, and general step-down applications. With its integrated power MOSFETs, it is capable of providing efficient and accurate current delivery, thus allowing for reliable operation and good thermal characteristics.

The general working principle of the LX7175CLD-TR is fairly simple. It uses an inductor and two semiconductor switches to transfer energy from the input voltage source to the load. When the first switch is “ON”, the inductor current builds up in the same direction as the input voltage source, generating a magnetic field, which is stored in the inductor. Before the reach of a predetermined switch-on output voltage level, the second switch turns “ON” which will retain and redirect the stored energy to the load. This energy transfer continues as long as the voltage level at the input voltage source is higher than the output voltage.

In addition, the LX7175CLD-TR has power saving features such as an adjustable frequency feature that allows for switching frequency reduction to minimize quiescent current, over-voltage protection (OVP), and a power good function. It also has short circuit protection, thermal shutdown, and current limit protection.

Overall, the LX7175CLD-TR is an excellent choice for LED applications and other low power step-down DC/DC applications. With its integrated power MOSFETs, efficient current delivery, and adjustable frequency feature, it is well suited for use in LED backlighting and LED driver applications as well as other general step-down applications.

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