IW380-40B

Overview

The IW380-40B is a high-performance, single-stage non-isolated buck LED driver controller from Renesas. It supports a wide DC input voltage range of 22V to 78V and delivers up to 150W output power with tight current regulation accuracy of ±3%. The device features a fixed switching frequency of 600kHz and operates within an extended temperature range of -40°C to +150°C. It integrates True DC dimming technology for flicker-free performance across a 0.0625% to 100% dimming range. Packaged in a compact SOIC-10 format, it includes comprehensive protection features such as OVP, OCP, OSP, UVLO, and OTP.

Feature Summary

• Supports True DC dimming technology for flicker-free operation across the entire dimming range
• Integrates high-resolution dimming capability with 0.0625% resolution steps
• Features fully protected operation including overvoltage, overcurrent, and over-temperature safeguards
• Accepts multiple dimming inputs including PWM, analog, and resistor-set configurations

Applications

• Commercial solid-state lighting systems
• Second-stage post-regulation in AC/DC lighting converters
• Stage lighting applications requiring high-performance dimming
• Stand-alone DC/DC converter designs for LED arrays

Procurement Notes

Verify component authenticity through authorized Renesas distributors or official channels due to limited supply status. Confirm package integrity and moisture sensitivity level (MSL 1) handling requirements upon receipt. Cross-reference ordering part numbers with official datasheets to ensure correct suffix alignment. Validate RoHS compliance documentation matches current manufacturing standards before integration into production lines.

Selection Notes

Select this controller for applications requiring high-voltage buck conversion with precise current regulation. Ideal for designs needing integrated MOSFET control without external gate drivers. Consider thermal management capabilities given the +150°C maximum operating temperature rating. Ensure input voltage specifications align with the 22V to 78V operational window for optimal efficiency and stability in commercial lighting architectures.

Part Context

Part of the iW380 series designed specifically for high-resolution second-stage buck LED driving. Developed by Renesas Electronics Corporation, formerly Dialog Semiconductor, focusing on commercial lighting solutions. The series emphasizes flicker elimination and high dimming resolution for professional illumination environments.

Replacement Considerations

Consult official Renesas cross-reference documentation for verified substitute part numbers. Ensure any replacement maintains compatibility with SOIC-10 packaging and 600kHz switching frequency requirements. Verify that alternative components support the same True DC dimming functionality and protection feature set.