MP3388EY-LF

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PMIC - LED Drivers

MP3388EY-LF is a monolithic step-down DC/DC converter from Monolithic Power System (MPS). This device is designed to deliver quality regulated output voltage from a wide range of input sources. It is suitable for a wide range of applications, such as lighting, automotive, consumer electronics, audio amplifiers, and industrial electronics.

MP3388EY-LF Application Field

The MP3388EY-LF is suitable for a wide range of applications, such as LED lighting, automotive, consumer electronics, audio amplifiers, and industrial electronics. The device can provide up to 95% efficiency and is a complete, cost-effective solution for driving and controlling multiple strings of LEDs. The device supports a wide input voltage range from 8V to 40V and can handle output currents up to 2A.

In LED lighting applications, the MP3388EY-LF is configured with an external resistor and capacitor, which allows it to provide a constant current while also offering programmable dimming control. It has built-in overvoltage protection and short circuit protection, which makes it an ideal choice for applications where reliability and safety are of paramount importance. It is also EMI compliant, making it an ideal choice for a wide range of applications.

In automotive applications, the MP3388EY-LF can be used to drive and control a wide range of LEDs in both interior and exterior lighting applications. It can be used for illuminating license plate lights, door and roof lights, high beam lights, interior dome lights, fog lights and daytime running lights. Due to its wide operating voltage range, the MP3388EY-LF can be used in a variety of automotive applications.

MP3388EY-LF Working Principle

The MP3388EY-LF is a step-down DC/DC converter based on a PWM controller. It consists of four main components, a transistor, a regulator, an error amplifier, and a feedback loop. The regulator receives an input voltage, converts it to a lower regulated output voltage, and also offers programmable dimming control. The error amplifier compares the output voltage with a reference voltage and adjusts the regulator accordingly.

The transistor is used to switch the output voltage, alternately charging and discharging the output capacitor. The feedback loop connects the output of the regulator to the input of the error amplifier, providing the required regulation. The error amplifier then compares the output voltage with the reference voltage, and adjusts the duty cycle accordingly. This ensures that the output voltage remains at a constant level and provides a reliable, cost-effective solution for LED drivers.

The MP3388EY-LF also offers enhanced thermal protection and EMI capability, making it suitable for use in noise-sensitive applications. The built-in Overvoltage Protection prevents damage to the LEDs in the event of an overvoltage condition. The device also has a built-in short circuit protection feature, which helps protect the LEDs from damage due to a short circuit.

The MP3388EY-LF is a highly versatile and cost-effective solution for LED lighting and automotive applications. Its wide operating voltage range, built-in overvoltage protection, short circuit protection, and EMI compliance make it an ideal choice for applications requiring reliability, safety, and cost-efficiency.

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