During each switching off-cycle, the low-side MOSFET is turned on and the conduction current is monitored by the internal circuitry. At the end of every clock cycle, the low-side MOSFET sourcing current is compared to the internally set low-side sourcing-current limit, I_{LIM_LS_SOUR}. If the low-side sourcing-current limit is exceeded, the high-side MOSFET does not turn on and the low-side MOSFET stays on for the next clock cycle. The high-side MOSFET turns on again when the low-side current is below the low-side sourcing current limit at the start of a cycle.