IW380-12BD

Overview

The IW380-12BD is a high-performance step-down DC/DC controller designed for LED lighting applications, supporting input voltages up to 78V. It features Renesas' True DC dimming technology, enabling flicker-free operation with a resolution of 0.0625% and a dimming range from 0.0625% to 100%. The device supports multiple dimming interfaces including analog, PWM, and 0-10V inputs, alongside DALI-2 compliance. It offers tight output current regulation of ±3%, an operating temperature range of -40°C to +85°C, and integrates comprehensive protection features such as input OVP, OCP, OSP, UVLO, and OTP within a compact SOIC-10 package.

Feature Summary

• True DC Dimming Technology: Eliminates low-frequency ripple across the entire dimming range, ensuring flicker-free performance even at minimum brightness levels.
• High-Resolution Control: Provides precise light control with 0.0625% dimming resolution and an integrated light-off mode for complete LED extinction.
• Versatile Dimming Compatibility: Supports three-in-one dimmer functionality via resistor set, analog/PWM inputs, and 0-10V/MCU interfaces.
• Comprehensive Protection: Integrates built-in safeguards against input overvoltage/undervoltage, output overvoltage/short circuit, overcurrent, and overtemperature conditions.

Applications

• Commercial solid-state lighting systems requiring high-performance dimmable drivers
• Second-stage buck converters in AC/DC lighting architectures
• Stand-alone DC/DC converters for LED arrays
• DALI-2 compliant lighting control networks

Procurement Notes

Verify component authenticity through authorized Renesas distributors or certified partners. Confirm RoHS compliance status and lead-free certification prior to integration. Ensure storage conditions adhere to moisture sensitivity level requirements. Validate that the specific suffix matches design specifications for pinout and electrical characteristics. Request official datasheets and quality certificates to confirm manufacturing origin and batch integrity.

Selection Notes

Select this controller for applications demanding high-resolution dimming without visible flicker. It is suitable for designs utilizing non-isolated buck topologies with input voltages up to 78V. Consider its compatibility with various dimming protocols if system flexibility is required. Evaluate thermal management needs given the SOIC-10 package constraints. Ensure the target application benefits from its tight current regulation accuracy for consistent LED performance.

Part Context

The IW380 series belongs to Renesas' portfolio of LED lighting driver ICs, specifically engineered for commercial lighting solutions. This component represents a second-stage buck controller optimized for post-regulation in AC/DC systems. It addresses industry demands for high-efficiency, flicker-free dimming in solid-state lighting. The series supports both standalone and integrated converter configurations, catering to diverse architectural requirements in modern illumination systems.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify functional equivalence carefully if considering alternatives, particularly regarding dimming resolution and input voltage limits.

FAQ

Does the IW380-12BD support DALI-2 communication?

Yes, the device is DALI-2 compliant and supports digital dimming interfaces.

What is the minimum dimming resolution of this controller?

The controller offers a high-resolution dimming capability of 0.0625%.

Can the IW380-12BD operate as a standalone DC/DC converter?

Yes, it functions as a stand-alone DC/DC converter or as a second-stage converter in AC/DC systems.