The SP768 is a linear, low-side constant-current driver designed to drive high power LEDs from an input voltage rail. The driver acts as a current source, ensuring constant LED current for a range of input voltages. The SP768 allows implementing the lowest cost LED driver for a variety of applications. Internal circuitry maintains the preset constant current output for a wide voltage range at the LED input. The LED current can be adjusted up to 033mA with an external clock applied to the CTRL pin. The built-in thermal protection automatically stops LED current to prevent overheating. A timeout function serves as a failsafe, shutting down the output for currents greater than 266mA after 4 seconds of continuous operation if the enable input is not cycled. The part can be shut down by using the EN pin, or sent into Sleep Mode holding the CTRL pin low for more than 00S. TYPICAL APPLICATION CIRCUIT