描述 Description

DESCRIPTION
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.FEATURES
? Supply Range ±20VDC to ±500VDC
? Versatile Card Insertion Detection Supports Both
– Multi-length Pin Systems
– Card Injector Switch Sensing
? Control Up to Four Loads or a Primary Load and 3 DC/DC Converters
? Highly ProgrammableHost Voltage Monitoring
– ProgrammableUnder- and Over-voltage Detection
? ProgrammablePower Good Delays for Sequencing DC/DC Converters
? ProgrammableCircuit Breaker Function
– ProgrammableOver-current Filter
– ProgrammableQuick-Trip?Circuit Breaker Values
– ProgrammableCircuit Breaker Mode
? Duty-Cycle Mode
? Latched Mode
? 2.5V and 5.0V reference outputs
– Easy Expansion of External Monitor Functions

特性 Features

? Supply Range ±20VDC to ±500VDC
? Versatile Card Insertion Detection Supports Both
– Multi-length Pin Systems
– Card Injector Switch Sensing
? Control Up to Four Loads or a Primary Load and 3 DC/DC Converters
? Highly ProgrammableHost Voltage Monitoring
– ProgrammableUnder- and Over-voltage Detection
? ProgrammablePower Good Delays for Sequencing DC/DC Converters
? ProgrammableCircuit Breaker Function
– ProgrammableOver-current Filter
– ProgrammableQuick-Trip?Circuit Breaker Values
– ProgrammableCircuit Breaker Mode
? Duty-Cycle Mode
? Latched Mode
? 2.5V and 5.0V reference outputs
– Easy Expansion of External Monitor Functions