IW3627-00D

Overview

The iW3627-00D is a digital constant-voltage offline PWM controller with integrated power factor correction, designed for LED lighting and general-purpose power supplies up to 100W. It operates in single-stage isolated or non-isolated topologies including flyback, buck, and buck-boost configurations. The device features PrimAccurate technology for precise output voltage regulation without secondary feedback circuits. It supports switching frequencies between 90 kHz and 120 kHz and maintains a no-load standby power consumption below 200 mW. Input voltage range spans 90 V to 277 V, ensuring compatibility with global AC mains. The component is housed in a compact SOT-23-6L package.

Feature Summary

• Digital control architecture enabling high power factor correction exceeding 0.9 and low total harmonic distortion under 20% across wide load ranges.
• PrimAccurate technology provides accurate constant voltage regulation without requiring secondary side feedback circuits or external loop compensation.
• Adaptive transient detection limits output voltage overshoot and undershoot to within 10% of the nominal value during load changes.
• Configurable minimum and maximum switching frequencies allow optimization for efficiency and audible noise elimination via pulse frequency modulation.

Applications

• Smart LED lighting systems
• LED lighting ballasts
• Front-end pre-regulators
• Solid state lighting adapters and chargers
• Multi-port high-power USB-PD hubs

Procurement Notes

Verify current availability status as supply may be limited or subject to factory special orders. Confirm that the ordering suffix corresponds to the specific tape and reel packaging configuration required for surface mount assembly. Ensure the selected variant matches the exact thermal and electrical specifications for the target application environment before finalizing procurement decisions.

Selection Notes

Select this controller for applications requiring high power factor correction and compact form factors due to the small SOT-23 package. It is suitable for designs needing fast transient response and stable regulation across varying loads without complex feedback networks. Consider its compatibility with GaN technology if high efficiency and reduced size are critical design parameters for the power stage.

Part Context

The iW3627 series represents Renesas' digital control solutions for offline power conversion. This specific model integrates advanced digital algorithms to simplify design while maintaining performance standards for solid-state lighting. It belongs to a family of controllers aimed at reducing component count and improving reliability in modern power supply architectures.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternative components from other manufacturers.

FAQ

Does the iW3627-00D support dimming functions?

No, the iW3627-00D is specified as a non-dimmable controller and does not support dimmer functions.

What protection features are integrated into the iW3627-00D?

The device includes input brown-out protection, over-temperature protection, output overvoltage protection, overcurrent protection, and overload protection.