IW3637-31

Overview

The iW3637-31 is an off-line buck LED driver controller from Renesas Electronics Corporation, designed for solid-state lighting applications. It supports a wide range of PWM dimming interfaces and operates within an optimal input voltage range of 90 to 305 V. The device features a switching frequency between 72 and 90 kHz and maintains LED current accuracy at 3%. It is available in a SOIC-8 package with a pitch of 1.27 mm and functions as a single-stage controller.

Feature Summary

• Supports wide range of PWM dimming interfaces
• Integrated protection features including OVP, OCP, UVLO, and OTP

Applications

• Solid-state lighting systems

Procurement Notes

Verify availability status directly with the manufacturer or authorized distributors, as supply may be limited or subject to factory special orders. Confirm RoHS compliance details and specific packaging options such as tape and reel or cut tape before finalizing procurement plans.

Selection Notes

Select this component for designs requiring an off-line buck topology with integrated PWM dimming support. Ensure the application requires the specified input voltage range and switching frequency characteristics. Verify that the SOIC-8 package fits the board layout constraints.

Part Context

This part belongs to the iW3637 series of LED lighting drivers. It is categorized under Driver ICs and manufactured by Renesas Electronics. The product is lead-free and falls under the ECCN classification EAR99.

Replacement Considerations

Check for cross-reference data sheets for compatible off-line buck LED controllers with similar pinouts and electrical specifications. Verify functional equivalence regarding dimming interface support and protection features before substitution.

FAQ

What type of dimming does the iW3637-31 support?

It supports a wide range of PWM dimming interfaces.

What is the operating temperature range?

The device operates within a temperature range of -40 to +85°C.