IW380-40

Overview

The IW380-40 is a high-performance, single-stage, non-isolated buck DC/DC controller designed for LED lighting applications. It supports an optimal input voltage of 78V and delivers up to 150W of output power with tight current regulation accuracy of ±3%. The device features integrated MOSFETs and operates at a switching frequency of 600 kHz. It provides a dimming range from 0.0625% to 100% with a resolution of 0.0625%, utilizing True DC dimming technology to eliminate flicker. The component is housed in a 10-lead SOIC package and supports PWM, analog, and 0-10V dimming inputs.

Feature Summary

• True DC Dimming Technology: Provides flicker-free dimming across the entire range with no ripple, ensuring consistent light quality down to minimum brightness levels.
• High-Resolution Control: Achieves exceptional dimming precision with 0.0625% resolution steps, allowing for smooth transitions and fine-tuned light control.
• Integrated Protection Suite: Includes comprehensive safeguards such as input overvoltage, output overcurrent, short circuit, and overtemperature protection to ensure system reliability.
• Versatile Dimming Compatibility: Supports multiple dimming methods including PWM, analog DC, and resistor-set inputs, facilitating integration with various control systems.

Applications

• Commercial solid-state lighting systems requiring high-performance dimmable drivers
• Second-stage buck conversion in AC/DC lighting architectures
• Stage lighting equipment demanding precise and flicker-free intensity control
• Stand-alone DC/DC converters for LED arrays

Procurement Notes

Verify availability status carefully, as this component may be subject to limited supply or special order constraints. Confirm the specific suffix matches the required dimming and electrical specifications. Ensure compatibility with existing thermal management and PCB layout requirements for the SOIC-10 package. Cross-reference official Renesas documentation for any recent lifecycle changes or obsolescence notices before finalizing procurement plans.

Selection Notes

Select the IW380-40 when designing systems requiring high-resolution True DC dimming without flicker artifacts. It is suitable for applications needing a 78V input interface and up to 150W power handling. Consider this part for designs prioritizing integrated protection features and compact SOIC-10 packaging. Evaluate if the 600 kHz switching frequency aligns with EMI constraints and efficiency targets for the specific LED load configuration.

Part Context

The IW380-40 belongs to the iW380 series of LED driver ICs from Renesas Electronics. This series is engineered for commercial lighting applications, emphasizing high-resolution dimming capabilities and robust performance. The component serves as a specialized buck controller within the broader portfolio of power management solutions offered by the manufacturer.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other iW380 variants only if datasheet parameters match exactly. Consult Renesas technical support for alternative sourcing options due to potential supply limitations.