CL520K4-G

Overview

The CL520K4-G is a linear constant current LED driver IC manufactured by Microchip Technology. It provides a fixed output current of 20mA, suitable for driving single-channel LEDs. The device operates with a supply voltage range from 4.75V to 90V and supports an output voltage range of 1V to 90V. It is housed in a TO-252 (DPAK) surface-mount package with three pins. The component is rated for a junction temperature operating range of -40°C to 125°C and complies with RoHS3 standards.

Feature Summary

• Linear regulation architecture designed for stable constant current output without complex external compensation.

Applications

• General LED lighting systems
• Signage applications

Procurement Notes

Verify the specific suffix 'K4' corresponds to the tape-and-reel packaging configuration required for your assembly line. Confirm that the 20mA fixed current rating aligns with your LED forward current specifications. Ensure the TO-252 thermal pad connection is properly managed for heat dissipation within the -40°C to 125°C operational envelope.

Selection Notes

Select this component when a simple, low-component-count solution is needed for driving LEDs at a fixed 20mA current. It is appropriate for applications where the supply voltage exceeds the LED forward voltage drop significantly, allowing for linear regulation. Consider the thermal performance in the TO-252 package relative to the power dissipation requirements of your specific circuit design.

Part Context

This part belongs to the CL52x series of linear LED drivers from Microchip Technology. The series includes variants such as the CL525K4-G, which offers a different current rating. These devices are designed to replace discrete transistor solutions, offering improved reliability and simplified design processes for constant current LED driving tasks.

Replacement Considerations

Public confirmed substitute part numbers: None identified in provided documentation.