CL325SG-G

Overview

The CL325SG-G is a three-channel linear LED driver IC manufactured by Microchip Technology. It provides constant current regulation for white LEDs with an output current of 25 mA per channel. The device supports analog and PWM dimming control methods to adjust brightness levels. It operates within a supply voltage range up to 90 V, making it suitable for series-connected LED strings. The component is housed in an 8-pin SOIC package with an exposed pad (SOIC-EP) for improved thermal performance. This integrated circuit is designed for efficient LED lighting applications requiring precise current matching across multiple channels.

Feature Summary

• Three independent constant current output channels
• Supports both analog and PWM dimming control interfaces
• Integrated linear regulation for stable LED current
• Exposed pad package design for enhanced thermal dissipation

Applications

• White LED backlighting systems
• General solid-state lighting fixtures
• LED indicator arrays
• Commercial illumination modules

Procurement Notes

Verify the specific ordering suffix against the official Microchip datasheet to ensure correct packaging and temperature grade. Confirm that the required lead time aligns with production schedules, as manufacturing cycles may vary. Ensure compatibility with the target PCB footprint, specifically the 8-SOIC-EP package dimensions. Cross-reference the RoHS status with project compliance requirements prior to final procurement authorization.

Selection Notes

Select this component when a multi-channel solution with matched current output is required for white LED arrays. The linear topology is appropriate for applications where efficiency losses are acceptable in exchange for simplified design and low noise. Evaluate the maximum supply voltage capability against the total forward voltage of the LED string. Consider the thermal management requirements associated with the SOIC-EP package for the intended operating environment.

Part Context

This part belongs to the CL32x family of linear LED drivers from Microchip Technology. The family includes variants such as the CL320 and CL330, which differ primarily in their programmed output current levels. These devices share similar architectural features, including dimming control and package options, allowing for scalable design across different lighting intensity requirements within the same product line.

Replacement Considerations

Direct substitutes include other parts within the Microchip CL32x series, such as the CL320 or CL330, provided the current rating difference is acceptable. Verify pinout compatibility and thermal characteristics when considering alternative manufacturers' linear LED drivers.