LE75S28CD

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LED Drivers are devices used to control the function of light emitting diodes (LEDs). They ensure that the correct power is provided to the LEDs and that the LED is operated safely and correctly. One example of an LED driver is the LE75S28CD. This device is used for driving high power LEDs.

The LE75S28CD is a constant current LED driver designed for driving LEDs in automotive and outdoor industrial lighting applications. The device operates over a wide range of input voltages from 7V to 60V. It provides an LED current of 28mA with a wide output voltage range of 0 to 180V. It also features short-circuit protection and over-temperature protection.

The LE75S28CD LED driver utilizes a composite network control circuit consisting of a voltage regulator VR3 and an opto-electronic feedback circuit composed of LED2 and LDR17. When the voltage at VR3 fluctuates, the change in voltage adjusts the LED current by adjusting the current flowing through the LED2 and LDR17. This ensures that the output current is kept constant.

The LE75S28CD LED driver features an advanced power supply topology which includes a voltage regulator, opto-electronic feedback circuit, as well as a frequency modulation circuit and other components. This topology allows it to offer higher efficiency, lower EMI, higher power factor, lower total harmonic distortion, and a greater range of input voltage. It also features a wide output voltage range and a low ripple current.

The LE75S28CD LED driver is designed to be used in a wide variety of applications including general lighting, outdoor lighting, street lighting, decorative lighting, and automotive lighting. It is suitable for driving high power LEDs in applications that require constant and stable LED current.

In summation, the LE75S28CD LED driver is an effective device for driving high power LEDs in various lighting applications. It can operate over a wide input voltage range and provides constant LED current with minimal ripple. Its advanced power supply topology increases efficiency, reduces noise, and assures safe operation.

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