Today’s conventional LED boost drivers use a single-stage asynchronous boost DC-DC architecture. This DC-DC architecture is used because of the high-output voltage required by the LED strings. Because ...

This driver supports LEDs with up to 1-A current and a 3000:1 dimming ratio, operates from input voltages of 3 to 30 V, and has a frequency range of 250 kHz to 2 MHz. Boost LED Driver ...

Choosing a discrete driver circuit requires an understanding of LED lighting to make the best trade-off. This Design Idea describes a simpler and equally good way to employ the ubiquitous 555 IC. In ...

However, there is a datasheet for the JW1981, which is a linear LED driver. After reverse-engineering the PCB, [bigclivedotcom] concluded that the JWB1981 must include an onboard bridge rectifier.

The buck driver (Fig. 2a), which is the most common, has an output that’s always lower than the input. The boost driver (Fig. 2b) produces an output that’s higher than the input.