MP3309AGQ-P

PMIC - LED drivers are the most important components used in power management and lighting applications. With the development of technology, LEDs are now commonly used and are indispensable components in the current industry. One of the important supporting components for LED application is the LED driver, and the MP3309AGQ-P is one of the most commonly used LED drivers.

The MP3309AGQ-P is a step-down LED driver with a wide input voltage range of 4.5V to 38V and an output current of 1A. It contains two integrated circuits- a 650V, N-channel MOSFET and an adjustable current regulator. The device is build in an SOT-23-5-L package and offers excellent EMI noise filtering performance. The LED driver also features a low shutdown current consumption of 1 μA and low input voltage start-up of 1.45V.

This LED driver is suitable for many applications, such as single-color lighting, RGB lighting, home decoration, automotive interior lights, etc. With its high efficiency and low input voltage start-up, it is one of the most popular LED drivers used.

The working principle of the MP3309AGQ-P LED driver is that when the input voltage increases, the PWM signal is generated by the PWM comparator and is outputted to the gate of the MOSFET to power the external LED. In case of excessive current, the current sense resistor will sense a voltage drop, and the over current protection (OCP) comparator will then shut down the device to protect the LED from being damaged.

In summary, the MP3309AGQ-P LED driver is a highly efficient and reliable step-down driver designed especially for LED lighting applications. It provides a wide input voltage range, low start-up voltage, and excellent EMI noise filtering performance, making it a great choice for many applications. With its working principle, the device can easily control the current provided to the LED and protect it from damage, ensuring it has long-term durability.