By Debbie Sniderman

AL8860 hysteresis-mode dc/dc step-down converter is designed for driving single
or multiple series‑connected LEDs efficiently from a voltage source higher than
the LED voltage. With integrated MOSFET, it targets low-voltage industrial and
automotive LED lighting applications as well as illuminated signs and
backlighting, and it replaces low-voltage halogen lamps in LED retrofits.


Operating with a 4.5- to 40-V input supply, the
AL8860 can directly source a 1-A output current in either a five-pin TSOT25
package or up to 1.5 A in a more thermally efficient eight-pin MSOP8-EP
package. It provides up to 40 W of output power depending on supply voltage and
external components. It offers a power-saving standby mode, deep dimming from
0% to 100%, soft-start operation, and protection against overtemperature and
LED short and open circuits.