MP4688DN-LF-Z Integrated Circuits (ICs)

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The MP4688DN-LF-Z is an LED driver integrated circuit which targets applications like flat panel displays, television sets, and motors. Typically, it is used as a backlight driver in various applications such as LCD panels, LED arrays, and LED-based indicators.

The MP4688DN-LF-Z is a DC-DC LED power supply circuit which can deliver a constant current to an LED from a regulated input voltage of 7V–35V. It is a highly efficient and compact power delivery solution for driving LEDs. It has been designed to deliver an accurate, stable current to drive LEDs with no load-line regulation required.

The MP4688DN-LF-Z is equipped with a high-efficiency synchronous boost converter, which can deliver up to 95% efficiency when the LED is operating in its linear region. The LED driver relies on an internal current-mode buck converter, with adjustable frequency and peak current limit, to deliver a constant current up to the rated 30mA or up to a 0.5A per channel. It supports a wide range of LEDs, from white LEDs to red, green, blue, and yellow LEDs. In addition, the LED driver is equipped with a thermal protection circuit that avoids potential damage in case of short-circuit or over-temperature.

Regarding its working principle, the MP4688DN-LF-Z draws power from the input voltage and then boosts it to the required voltage level. This voltage is then regulated by an internal buck converter and is fed to the output of the device. The output of the buck converter is then monitored and compared to the desired set-point current. If the output current falls outside a given range, the circuit will adjust the output current and the pulse-width-modulated (PWM) signal to the LED to reach the desired target. The output voltage is then regulated to the desired value.

The MP4688DN-LF-Z is a highly reliable and efficient LED driver, designed and packaged to meet the requirement of high-end display applications. It is an ideal choice for designers looking to incorporate a reliable and cost-effective LED Driver solution into their design, as the MP4688DN-LF-Z offers an excellent, regulated current supply to the LED with high efficiency and reliability.

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