IW3677-01C

Overview

The IW3677-01C is a single-stage high-performance AC/DC primary-side-regulation PWM controller with integrated power factor correction (PFC). Designed for LED lighting applications, it supports output powers up to 100W and operates within a universal AC input voltage range of 90VAC to 305VAC. The device utilizes Renesas' proprietary technology to achieve a power factor greater than 0.9 and total harmonic distortion below 20% down to 33% load current. It features an integrated high-voltage startup circuit and is available in a compact SOIC-7 package.

Feature Summary

• Integrates high-voltage startup circuitry for simplified design
• Provides high power factor and low THD performance across varying loads
• Supports flyback, step-down, and step-up topologies

Applications

• LED lighting drivers
• Single-stage AC/DC converters
• Flyback power factor correction circuits

Procurement Notes

Verify the specific suffix code against official Renesas documentation to confirm pinout compatibility and electrical characteristics. Ensure the component meets regional regulatory standards for electromagnetic compatibility and energy efficiency required for your target market. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this controller for designs requiring high power factor correction without secondary-side feedback components. It is suitable for applications needing primary-side regulation to reduce cost and complexity. Consider the thermal performance and maximum output power limits when designing the heat dissipation strategy for the target application.

Part Context

This component belongs to the iW3677 family of LED lighting driver ICs from Renesas Electronics. The family focuses on single-stage solutions that combine PFC and DC-DC conversion functions. These devices are engineered to replace traditional two-stage architectures, offering space savings and improved reliability for general illumination products.

Replacement Considerations

Official substitutes include the IW3677-00C variant. Verify functional equivalence regarding pin configuration and control logic before substitution. Consult the latest Renesas datasheet for any updates or obsolescence notices.