MAX5943
Description
The MAX5943 is a fully integrated power-management IC for Fire Wire® applications. This device controls two external power n-channel MOSFETs to regulate current from the input power supply to the load and performs low-voltage-drop, power-supply ORing. The MAX5943 operates over a 7.5V to 37V input range and provides inrush and output current limit in addition to a diode ORing function suitable for Fire Wire applications. The MAX5943 allows the safe insertion and removal of Fire Wire peripherals into a live Fire Wire port by providing inrush current control and an output current-limiting function. The ORing feature provides a very efficient way to protect the Fire Wire port when connected to another Fire Wire peripheral that sources a higher voltage. By turning off both external MOSFETS, the MAX5943 provides a true bidirectional load disconnect. A low-current shutdown mode disables the MAX5943, resulting in less than 10µA supply current. A pin-selectable input allows latched or...
