A8518KLPTR-T Integrated Circuits (ICs)

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The A8518KLPTR-T is a high-efficiency, low-profile topology PMIC – LED driver designed for low-current applications. It combines control and protection functions with a high-side integrated MOSFET to output constant peak current over a wide range of temperatures. This drive can operate at input voltages up to 16.5V with temperatures ranging from −40°C to +85°C.

The A8518KLPTR-T is suitable for applications with a constant average current requirement such as driving LEDs in strands and clusters. This driver\'s over-temperature protection and overtemperature shutdown functions provide protection for LED configurations that require significant heat-sinking. It has a power factor controller (PFC) and is also designed to be compliant with EN61000-3-2/3 and UL8750 for both harmonic control and conducted EMI/RFI.

The A8518KLPTR-T has an adjustable current limit from 1.2A up to 6A, making it suitable for both single-pair and multi-pair LED strings. The peak current regulation is controlled by an internal digital signal processor, providing a very stable LED output current even with changes in LED type or LED string length. The LED output can be configured for constant current or PWM dimming, and the PWM frequency can be programmed up to 250KHz.

The internal power MOSFET in the A8518KLPTR-T is rated for 6A and it also has a diode with a maximum reverse voltage of 15V. The output voltage can be adjusted via external resistors, allowing the user to precisely match the output voltage to the requirements of the LEDs. The driver also offers a number of protection features, including over-voltage protection, over-temperature protection, and SCP protection.

In conclusion, the A8518KLPTR-T is an excellent low-cost, low-profile PMIC – LED driver solution for a wide range of lighting applications. The driver has wide input and output voltage ranges, over-temperature protection and PWM dimming of the LED output for further energy saving. It has integrated, protected MOSFETs and is compliant with international standards for EMI/RFI.

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