IW380-02

Overview

The iW380-02 is a high-performance, non-isolated step-down DC/DC controller designed for second-stage LED lighting applications. It supports a wide input voltage range from 22V to 78V and delivers up to 150W of output power. The device features a fixed switching frequency of 400kHz and operates within a temperature range of -40°C to +85°C. It provides tight output current regulation with an accuracy of ±3% and supports a dimming range from 0.0625% to 100%. The component is housed in a 10-lead SOIC package.

Feature Summary

• Enables flicker-free operation by post-regulating from offline AC/DC converters, minimizing low-frequency ripple even at 1% dimming levels.
• Provides true DC dimming with zero ripple across the entire range, supporting analog, PWM, and resistor-set inputs for broad compatibility.
• Integrates comprehensive protection mechanisms including input OVP/UVLO, output overvoltage/short/overcurrent, peak current limit, and over-temperature protection.

Applications

• Commercial solid-state lighting systems requiring high-resolution dimming
• Second-stage buck conversion in AC/DC LED driver architectures
• Stand-alone DC/DC converter designs for industrial LED arrays

Procurement Notes

Verify availability status directly with Renesas or authorized distributors, as supply constraints may apply. Confirm that the specific suffix matches the required pinout and functional configuration. Ensure compliance with RoHS directives and check for any regional distribution restrictions before finalizing procurement plans.

Selection Notes

Select this controller when designing systems requiring precise current regulation and extensive dimming resolution without flicker. It is suitable for applications needing integration with DALI-2, 0-10V, or MCU-based control interfaces. Consider the 78V maximum input rating and 150W power capability when sizing external components.

Part Context

The iW380 series represents Renesas' solution for high-efficiency, high-resolution LED driving. The iW380-02 variant specifically targets commercial lighting environments where light quality and dimming smoothness are critical. It complements primary-side regulated AC/DC controllers by providing secondary-stage precision.

Replacement Considerations

Public confirmed substitute part numbers: iW380-01, iW380-20, iW380-4x.