IW380-00B

Overview

The iW380-00B is a high-performance, single-stage non-isolated buck DC/DC controller designed for commercial LED lighting applications. It operates within an input voltage range of 22V to 78V and supports output power up to 150W. The device features a fixed switching frequency of 400kHz and delivers tight output current regulation with ±3% accuracy. It utilizes Renesas' True DC dimming technology to achieve flicker-free performance across a wide dimming range from 0.0625% to 100%. The component is housed in a compact SOIC-10 package.

Feature Summary

• Supports high-resolution True DC dimming with 0.0625% resolution steps
• Provides flicker-free operation by minimizing low-frequency output ripple
• Integrates comprehensive protection including OVP, OCP, OSP, UVLO, and OTP
• Compatible with PWM, analog, and 0-10V dimming control interfaces

Applications

• Commercial solid-state lighting systems
• Second-stage post-regulation in AC/DC lighting converters
• Standalone DC/DC converter circuits for LED arrays

Procurement Notes

Verify availability status as supply may be limited or subject to factory special orders. Confirm the specific suffix matches the required pinout and functionality. Ensure compatibility with existing thermal management designs given the SOIC-10 package constraints. Review the latest datasheet revision for any updates to electrical characteristics or recommended operating conditions before finalizing procurement.

Selection Notes

Select this controller for applications requiring precise constant current regulation and advanced dimming capabilities. It is suitable for designs needing a non-isolated buck topology with wide input voltage tolerance. Consider the 400kHz switching frequency when designing external passive components. Verify that the target application benefits from the integrated light-off mode and true DC dimming features to eliminate visible flicker.

Part Context

The iW380 belongs to the iW380 series of LED drivers developed by Renesas Electronics Corporation. This series focuses on delivering high-efficiency solutions for commercial illumination. The component serves as a dedicated controller for managing LED current in demanding lighting environments, ensuring consistent performance and longevity through robust internal protection mechanisms.

Replacement Considerations

Consult official cross-reference documentation for verified substitute part numbers. Ensure any replacement maintains compatible input voltage ranges, pin configurations, and dimming interface support. Validate thermal performance and regulatory compliance before implementing alternative components.

FAQ

What is the maximum dimming resolution supported by the iW380-00B?

The device supports a dimming resolution of 0.0625%, allowing for extremely fine control over LED brightness levels.

Does the iW380-00B support DALI-2 compliance?

Yes, the iW380 series is documented as being DALI-2 compliant, facilitating integration into digital addressable lighting installations.

How does the True DC Dimming technology affect output ripple?

True DC Dimming eliminates virtually all flicker in the system by minimizing low-frequency output ripple current, even at very low dimming levels.