MP4000DS-LF

The MP4000DS-LF family of LED drivers from Diodes Incorporated provide a leading-edge LED lighting solution for applications ranging from low power through high power LED backlighting and LED general lighting. The MP4000DS-LF family is a highly efficient, low cost solution, integrating constant current control and over-temperature protection. The goal is to provide a steady and reliable current source to the LED string while providing additional protection features.

This LED driver family was designed to enable the use of high power LEDs in applications that require minimal external components while maintaining a wide variety of dimming and protection features. The MP4000DS-LF incorporates an onboard constant current controller, which reduces bill-of-materials cost associated with the design. The device is also able to support up to 16 LEDs in a series string and can operate up to a maximum of 250mA driving current.

The MP4000DS-LF provides a wide range of protection features to users, including thermal overload protection, over-voltage protection, adjustable OCP limit and adjustable OVP limit. The adjustable OVP limit can be set between 5V and 40V by an external resistor, and the adjustable OCP limit can be set between 100mA and 500mA. This allows for an additional layer of protection against any potential faults in the design.

These LED drivers are ideal for a wide range of applications, such as automotive, industrial and general lighting. With its unique support of up to 16 LEDs and wide variety of protection features, it allows manufacturers to design more efficient, lower cost LED illumination products. Additionally, the MP4000DS-LF features a low power standby mode, which automatically enters into low power mode when the LED current drops below the programmed level, significantly reducing overall power consumption.

The working principle of the MP4000DS-LF LED driver is to maintain a consistent and reliable current to the LED string. When the LED is powered, the LED driver measures the transistor on resistance and adjusts the output current accordingly to maintain a constant current. If the voltage on the LED is too high, it will reduce the current output, and if the voltage drops below the set point, it will increase the current output. In addition, it supports an adjustable over-temperature protection (OTP) setting and will reduce or shut off the output current when the internal temperature rises above the set level.

In summary, the MP4000DS-LF LED drivers from Diodes Incorporated provide a well-rounded LED lighting solution that provides designers with versatility, reliability, and protection features. With its wide range of applications and features, it is ideal for a variety of LED lighting applications, giving designers the flexibility and cost savings they need to create an efficient, reliable LED illumination solution.