SMH4803

*COMMENT
Stresses listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.

The SMH4803 is designed to control hot swapping of plug-in cards operating from a single supply ranging from 20V to 500V. The SMH4803 hot-swap controller provides under-voltage and over-voltage monitoring of the host power supply, it drives an external power MOSFET switch that connects the supply to the load, and also protects against over-current conditions that might disrupt the host supply. When the input and output voltages to the SMH4803 controller are within specification, the SMH4803 provides three "Power Good" logic outputs that may be used to turn ON the loads, e.g. isolated-output DCDC converters, or drive LED status lights. The SMH4803 provides three separate "Power Good" logic outputs that activate loads in a timed sequence. Additional features of the SMH4803 include: temperature sense or master enable input, 2.5V and 5V reference outputs for expanding monitor functions, two "Pin-Detect" enable inputs for fault protection, and duty-cycle or latched over-current protection modes.