MP46885DN-LF

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PMIC (Power Management Integrated Circuits) is a type of integrated circuit specifically designed to manage the power supply, voltage and currents in a variety of applications. LED (Light Emitting Diode) Drivers are power management integrated circuits that convert and control the current supplied to LEDs. The MP46885DN-LF LED Driver is a high-efficiency LED driver integrated circuit intended for lighting applications. This driver is able to switch up to twelve LED strings with a single driver and offers flexible dimming functionality.

Application Field

The MP46885DN-LF LED Driver is designed to provide a cost-effective and efficient solution for large-scale LED lighting applications, such as general lighting, commercial lighting, and automotive lighting. The driver is able to accommodate a variety of string configurations, with up to twelve LED strings per driver, and offers flexible power output levels for high-efficiency lighting systems. The driver is also compatible with a variety of dimming options such as direct PWM, analog dimming, and pulse-width modulation dimming.

Working Principle

The MP46885DN-LF LED Driver is a high-efficiency, monolithic integrated circuit that regulates the current supplied to LEDs. The driver is capable of providing up to twelve LED strings and utilizes a Low-Side Boost topology to convert and control the current supplied to the LEDs. The current is set by an external DC voltage or external resistor, and the boost voltage can be adjusted using either a trimming potentiometer or a trimmed-mode pin. The driver also has a built-in power stage which provides uniform current regulation across all strings and up to 12V output voltage. The driver includes a wide input voltage range of 5-35V and a thermal protection system for over-temperatureLimit protection.

The MP46885DN-LF LED Driver also features a range of dimming options including direct Pulse Width Modulation (PWM), analog dimming, and pulse-width modulation dimming. Direct Pulse Width Modulation dimming is a simple and cost-effective way to dim LED lights from full bright to 0%. Analog dimming uses an external voltage, such as from a potentiometer, to control the LED current. Pulse-width modulation dimming, also known as pulse level dimming, is another way of dimming LED lights. This technique uses a series of square wave pulses of varying duty cycles to gradually dim the lights.

Conclusion

The MP46885DN-LF LED Driver is a high-efficiency LED driver integrated circuit intended for a variety of lighting applications. The driver is capable of supplying up to twelve LED strings and offers flexible power output levels and a range of dimming options, including direct PWM, analog dimming, and pulse-width modulation dimming. This driver is ideal for a wide range of applications, such as general lighting, commercial lighting, and automotive lighting, and offers a cost-effective and efficient solution for large-scale LED lighting needs.

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