MP3331GC-P

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Introduction

The MP3331GC-P is a PMIC – LED Driver IC designed by Marktech Optoelectronics. This application-specific integrated circuit (ASIC) is designed as a single-channel constant current driver with a low dropout regulator (LDO) that can be used to power a number of pin-controlled LEDs. Its primary purpose is to provide an efficient and reliable means of driving LEDs, which can be used in a variety of applications from lighting solutions to industrial control processes.

Features

The MP3331GC-P provides innovative features for LED driving applications. It has an adjustable current range of 1 to 500mA, a wide operating input voltage of 2.7V to 5.5V, and an adjustable output voltage range of 0.4V to 0.8V. Other features include an integrated boost converter, a 2% accuracy current control, a 0.5% dropout voltage, and a shutdown capability. It also has an extremely low quiescent current of 36uA and a high efficiency of up to 93%, making it ideal for battery-powered applications. The device also meets the requirements of the IEC60601-1 international safety standard.

Application Field

The MP3331GC-P LED driver can be used in a variety of LED lighting applications, including architectural lighting, guide lighting, decoration lighting, backlighting, and industrial displays. It can be used in industrial applications such as electronic sounders, beepers, and motor controls, as well as home and office automation. The device has all the features necessary for applications requiring energy efficiency, low noise and high reliability.

Working Principle

The MP3331GC-P LED driver works by converting an incoming DC voltage into a high-frequency PWM signal which is then regulated and used to drive the LEDs. The integrated boost converter enables the MP3331GC-P to generate a programmable constant output current to the LEDs. The output voltage of the boost converter is regulated by the input voltage and is adjustable depending on the application needs. The LDO supplies power to the control logic and the adjust pin which allows adjustment of the current range.

To control the output current and voltage, the MP3331GC-P relies on the pulse-width modulator (PWM) which is used to regulate the output current. This is done by measuring the amount of time each LED is on, and then adjusting the amount of current delivered to each LED as necessary. The PWM frequency can also be adjusted using the adjust pin to ensure that the LED output brightness is optimized. The device also has a shutdown capability to reduce power consumption when the LEDs are not in use.

Conclusion

The MP3331GC-P LED driver is a highly efficient and reliable application-specific integrated circuit (ASIC) designed for LED driving applications. It provides an adjustable current range of 1 to 500mA and adjustable output voltage range of 0.4V to 0.8V, making it ideal for a variety of LED-based applications. The device is equipped with a boost converter, an adjustable 2% accuracy current control, a 0.5% dropout voltage, and a shutdown capability. It offers low quiescent current of 36uA, a high efficiency of up to 93%, and meets the requirements of the IEC60601-1 international safety standard.

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