PRODUCT DESCRIPTION

The SMH4803A is an integrated solution for high reliability systems to monitor and react to events that could have a detrimental effect on a system. It can contain or limit faults to a single circuit board before that fault propagates to the system. Its programmability lets a single board satisfy multiple circuit demands while customized to meet special requirements.

FEATURES

Soft Starts Main Power Supply on Card Insertion or System Power Up

Senses Card Insertion via Short Pins or Ejector Switches

Master Enable to Allow System Control of Power Up or Down

 Can be used as a Temperature Sense Input

Programmable Independent Controls of 3 DC/DC Converters

 Not Enabled until Host Supply Fully Soft Started

 Programmable Time Delay Between each Enable Signal

 Available Input to hold off Dependant Enables until Conditions are Satisfied

Highly Programmable Circuit Breaker

 Programmable Quick-Trip^tM Values

 Programmable Current Limiting

 Programmable Circuit Breaker Mode:

Latched (Volatile or Nonvolatile)

 Programmable Duty Cycle Times

 Programmable Over-current Filter

Programmable Host Voltage Fault Monitoring

 Programmable Under- voltage Hysteresis

 Programmable UV/OV Voltage Filter

 Programmable Fault Mode: Latched or Duty Cycle

Nonvolatile Programming to Customize Features

 Available Pre-programmed from Summit

2.5V and 5.0V Reference Outputs

 Eliminates the Need or Other Primary Volt ages

 Easy Expansion of External Monitor Functions

Supply Range ±20VDC to >±500VDC