LP6491

Preliminary Datasheet LP6491 180KHz, 5A Step-down Converter With Cable Dropout Compensation General Description The LP6491 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator designed to power 5V USB applications. A precise output voltage and programmable cable drop compensation maintain accurate 5V regulation at the USB socket connected to the end of a long cable. Forced continuous operation allows the LP6491 to sink current, further enhancing accurate 5V regulation during load transients. Accurate and programmable input/output current limit, an input current monitor pin and an output current monitor pin improve system reliability and safety, allow the user to implement latch-off or auto-retry functionality and can eliminate the need for a USB switch IC. Dual feedback allows regulation on the output of a USB switch, protecting USB devices during fault conditions. Thermal shutdown provides additional protection by limiting power dissipation ...