IW380-00

Overview

The iW380-00 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 Renesas' True DC dimming technology, enabling flicker-free operation across a dimming range of 0.0625% to 100% with 0.0625% resolution. It operates at a fixed switching frequency of 400kHz and includes comprehensive protection features such as input OVP, OCP, OSP, UVLO, and OTP. Packaged in a compact SOIC-10 format, it supports PWM, analog, and 0-10V dimming inputs.

Feature Summary

• Supports high-resolution True DC dimming with zero ripple across the entire dimming range
• Enables complete light-off mode at minimum dimming input levels
• Provides flexible dimming compatibility via dual DIM pins supporting PWM, analog, and resistor-set inputs
• Integrates multiple protection mechanisms including overvoltage, short circuit, and thermal safeguards

Applications

• Commercial solid-state lighting systems
• Second-stage post-regulation converters in AC/DC lighting architectures
• Stand-alone DC/DC converter designs for LED arrays
• High-performance dimmable lighting fixtures requiring flicker-free performance

Procurement Notes

Verify component authenticity through authorized Renesas distributors or direct manufacturer channels due to limited supply status. Confirm RoHS compliance and lead-free specifications prior to integration. Validate package dimensions against SOIC-10 standards to ensure PCB footprint compatibility. Review datasheet revisions for any updates to electrical characteristics or pin configurations before finalizing design implementation.

Selection Notes

Select this controller for applications requiring precise current regulation and advanced dimming capabilities without isolation requirements. Ensure input voltage ranges between 22V and 78V align with system architecture. Consider thermal management solutions given the operating temperature range and power dissipation characteristics. Verify that external components support the 400kHz switching frequency and required output voltage range up to 98% of input.

Part Context

The iW380 belongs to Renesas' iW380 series of LED driver ICs, specifically engineered for high-efficiency buck conversion in lighting applications. This series emphasizes true DC dimming technology to eliminate visible flicker, addressing critical quality standards in commercial illumination. The component integrates control logic with power stage drivers in a small form factor, reducing bill-of-materials complexity compared to discrete solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Renesas technical support for cross-reference recommendations based on specific electrical and mechanical constraints.