ON Semiconductor’s NCL30100 is a new step-down (buck) LED driver controller for high-brightness LED driver applications where space is limited and high efficiency is important, such as low-voltage MR-16 LED bulbs. It helps designers optimise their solution for a wide range of LED drive currents and is targeted at low-voltage halogen-to-LED replacement, LED track and landscape lighting, and solar LED products.
The chip’s ability to operate at high switching frequency and the flexibility it gives to select the most appropriate power MOSFETs, combine to support the customer in achieving an optimal solution for their design.
The chip is based on a peak current, quasi fixed-off time control architecture optimised for continuous mode step-down operation that eliminates the need for an output filter capacitor. A switching frequency of up to 700 kHz enables designers to use small inductors and therefore achieve PCB real estate savings. The NCL30100 meets the energy saving demands of the latest designs by achieving up to 95% efficiency. For low-voltage AC applications, it can be dimmed via a standard wall dimmer.
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