AT9933 Datasheet | Supertex

.. AT9933 Hysteretic Boost-Buck (Ćuk) LED Driver IC Features - - - - - - - - - - Constant current LED Driver Steps input voltage Up or Down Low EMI Variable frequency operation Internal 8 to 100V linear regulator Input and output current sensing Input current limit Enable & PWM dimming Ambient temperature rating up to 125°C Meets AEC-Q100 requirements General Description The AT9933 is a variable frequency PWM controller IC, designed to control an LED lamp driver using a low-noise boost-buck (Ćuk) topology. The AT9933 uses patent-pending hysteretic current-mode control to regulate both the input and the output currents. This enables superior input surge immunity without...