IW3636-31

Overview

The iW3636-31 is a single-stage LED driver IC from Renesas Electronics, designed for solid-state lighting applications. It integrates power factor correction and supports a wide range of dimming interfaces. The device operates within an input voltage range of 90 to 305 V and delivers output power up to 90 W. It features a switching frequency between 72 and 90 kHz with a current accuracy of 3%. The component includes protection mechanisms such as overvoltage, overcurrent, under-voltage lockout, and over-temperature protection. It is housed in an SOIC-8 package and functions as a digital offline PWM controller.

Feature Summary

• Integrates primary-side regulation technology for accurate LED current control without secondary sensing components.
• Supports multiple dimming interfaces including calibrated DIM1 and NTC DIM2 for flexible system integration.
• Provides comprehensive protection features including overvoltage, overcurrent, under-voltage lockout, and over-temperature shutdown.

Applications

• Commercial solid-state lighting fixtures
• LED downlights and panel lights
• General illumination systems requiring PFC

Procurement Notes

Verify availability status carefully as the part may be subject to limited supply or factory special orders. Confirm that the specific suffix '-31' matches the required packaging and variant specifications. Check for end-of-life notifications or recommended replacements if current stock is insufficient. Ensure compliance with RoHS standards and moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this component for designs requiring a single-stage solution with integrated PFC to reduce bill of materials cost. Consider the SOIC-8 package size for space-constrained applications. Evaluate the supported dimming interfaces against the target lighting control system requirements. Ensure the input voltage range aligns with the global mains voltage specifications of the intended market.

Part Context

The iW3636 belongs to the iW3636 series of dimmable digital offline PWM controllers. This family targets low BOM cost solutions for commercial lighting. The -31 suffix typically denotes specific packaging or trim variations within the series. It serves as a core driver IC for high-efficiency LED power supplies.

Replacement Considerations

Check official Renesas documentation for direct pin-to-pin compatible alternatives. Verify if other suffixes within the iW3636 series offer identical functionality with different packaging. Consult distributor cross-reference tools for verified substitute part numbers only.