IW380-02B

Overview

The iW380-02B is a high-performance, single-stage non-isolated buck DC/DC controller designed for commercial LED lighting applications. It supports a wide input voltage range from 22V to 78V and delivers up to 150W of output power with tight current regulation accuracy of ±3%. The device features a fixed switching frequency of 400kHz and operates within an extended temperature range of -40°C to +150°C. Packaged in a compact SOIC-10 format, it integrates comprehensive protection mechanisms including overvoltage, overcurrent, and thermal shutdown.

Feature Summary

• Supports True DC dimming technology providing flicker-free performance across the entire dimming range without ripple
• Enables high-resolution dimming control with a resolution of 0.0625% and a dimming range from 0.0625% to 100%
• Integrates multiple dimming interface options including PWM, analog, resistor-set, and 0-10V inputs for versatile compatibility
• Includes built-in light-off mode to completely turn off LED output at minimum dimming levels

Applications

• Commercial solid-state lighting systems requiring second-stage post-regulation
• High-performance dimmable LED drivers utilizing AC/DC front-end converters
• Standalone DC/DC converter designs for industrial LED illumination
• Lighting fixtures demanding DALI-2 compliance and true DC dimming capabilities

Procurement Notes

Verify component authenticity through authorized Renesas distributors or official channels due to limited supply status. Confirm package integrity and moisture sensitivity level prior to assembly. Ensure design compatibility with specified input voltage ranges and thermal requirements. Review latest datasheet revisions for any updates to pin configurations or electrical characteristics before finalizing procurement orders.

Selection Notes

Select this controller for applications requiring precise constant current regulation and advanced dimming features. Consider the SOIC-10 package constraints for PCB layout and thermal management. Evaluate system requirements against the 400kHz switching frequency and 150W power limit. Ensure compatibility with existing dimmer protocols such as 0-10V or PWM signals. Verify that the operating temperature range meets environmental conditions.

Part Context

The iW380 series belongs to Renesas' portfolio of specialized LED driver integrated circuits aimed at enhancing commercial lighting quality. This specific model focuses on eliminating flicker through true DC dimming technology. It serves as a critical component in modern solid-state lighting architectures, bridging offline AC/DC conversion stages with precise LED current control.

Replacement Considerations

Consult official cross-reference documentation for verified substitute part numbers. Ensure functional equivalence regarding dimming resolution, input voltage range, and package dimensions when evaluating alternatives.