The ZD860 is a constant off-time, high power LED driver IC that is capable of driving up to 1.5A of output current. It operates from an input voltage range of 4V to 40V (AC or DC) and generates a regulated programmable constant output current for high brightness power LEDs. The integrated power switch reduces component count by eliminating the need for an external power switch. Thermal and overvoltage circuitry protects the power transistors from excessive power dissipation. The ZD860 is available in a thermally enhanced 16-pin exposed TSSOP green package.