MP3393EY-LF

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PMIC, or Power Management Integrated Circuits, have become an integral part of electronics and electrical systems. This is because they regulate and manage the power and voltage of the system, providing a stable environment and preventing device and system damage. One particular PMIC product is the MP3393EY-LF, which is designed to provide LED lighting solutions. This article will explore the application field and working principle of the MP3393EY-LF.

Application field

The MP3393EY-LF is a high-efficiency, high-voltage LED driver, designed for constant current, step-down LED lighting solutions. It has a wide-voltage input range of 1.8V to 40V, making it suitable for use in a variety of applications. The device can be used to drive a wide range of LED types, including low-power LEDs, ultra-bright LEDs, and mid-power LEDs. The device also supports a wide range of LED strings and configurations, including series and parallel LED strings with up to 32 LED elements. The MP3393EY-LF is designed to safely drive LED strings with no external current sensing components while maintaining a reliable and constant LED current.

The device features a high efficiency power conversion design, enabling a longer system runtime and higher efficiency operation. The device supports a wide range of dimming options, including pulse-width modulation (PWM), analog dimming, and I2C dimming. The device is designed to be highly configurable, with a total of 16 configuration bits, intended to simplify product configuration. Additionally, the device is designed to be highly integrated, comprised of 16 electrical components and features a 3.01mm x 3.01mm QFN-38 package.

Working Principle

The MP3393EY-LF is designed to provide constant current operation in a high-voltage, step-down LED driver configuration. The device contains an internal High Voltage Start Up (HVSU) architecture, which provides a regulated output voltage at the LED terminals. This is then used to drive the LED current in series and/or parallel LED strings. The device utilizes primary-side regulation to accurately monitor and regulate the LED current, regardless of the LED string configuration.

The device features an input sense circuit, which allows the device to maintain a constant LED current even if there are variations in the input voltage or LED forward voltage. The device also contains an HVSU circuit, comprised of a very high input voltage start-up stage, a high voltage control stage, and two output voltage control stages. This ensures that the device maintains the required output voltage level, regardless of the input voltage level.

The device includes two error condition detectors, a peak current monitor, and an over-temperature monitor. The peak current monitor provides the system with protection against over-current conditions, while the over-temperature monitor prevents the system from reaching hazardous temperatures. The device is designed to maintain a constant LED illumination level even under extremely difficult conditions, allowing it to provide reliable and consistent LED performance.

Conclusion

The MP3393EY-LF is a high-voltage, constant-current LED driver, designed to provide reliable and consistent LED illumination. Its wide range of features and configurations, combined with its high-efficiency power conversion design, make the device suitable for use in a variety of applications and markets. Its combination of protection features and dimming options ensure that the device provides a safe and reliable LED lighting solution.

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