Renesas Electronics Corporation LED Drivers IW3689-01

The IW3689-01 is a high-performance AC/DC power supply controller designed for dimmable LED luminaires, capable of handling input voltages of 230V AC. It utilizes advanced digital control technology to detect various dimmer types, including leading-edge, trailing-edge, and smart dimmers, ensuring compatibility and dynamic brightness control. The device operates in quasi-resonant mode when no dimmer is present, optimizing power efficiency and minimizing electromagnetic interference (EMI). This controller supports output power up to 25W and features a wide dimming range from 1% to 100%. It employs patented PrimAccurate,Ñ¢ primary-side sensing technology for precise LED current regulation without the need for secondary feedback circuits. The IW3689-01 also integrates multiple protection features, including over-temperature and short-circuit protection, and maintains high power factor and low total harmonic distortion, meeting IEC61000-3-2 requirements. The device is packaged in an 8-lead SOIC-8 format and is RoHS compliant, making it suitable for various dimmable LED applications.