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SMH4803 Datasheet

Part Number SMH4803
Manufacturers Summit Microelectronics
Logo Summit Microelectronics
Description Distributed Power Hot-Swap Controller
Datasheet SMH4803 DatasheetSMH4803 Datasheet (PDF)

SMH4803 Distributed Power Hot-Swap Controller www.DataSheet4U.com 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 Programmable Host Voltage Monitoring – Programmable Under- and Over-voltage Detection • Programmable Power Good Delays for Sequencing DC/DC Converters • Programmable Circuit Breaker Function – Programmabl.

  SMH4803   SMH4803






Part Number SMH4804
Manufacturers Summit Microelectronics
Logo Summit Microelectronics
Description -48V Programmable Hot Swap Sequencing Power Controller
Datasheet SMH4803 DatasheetSMH4804 Datasheet (PDF)

SMH4804 -48V Programmable Hot Swap Sequencing Power Controller – – www.DataSheet4U.com FEATURES AND APPLICATIONS INTRODUCTION The SMH4804 is a user-programmable -48V power supply controller designed to control the hot-swapping of plug-in cards and to sequence supplies in a distributed power environment. The SMH4804 drives an external power MOSFET switch that connects the bus side supply to the card side load and controls in-rush current while providing both current regulation and over-current.

  SMH4803   SMH4803







Part Number SMH4803A
Manufacturers Summit Microelectronics
Logo Summit Microelectronics
Description Distributed Power Hot-Swap Controller
Datasheet SMH4803 DatasheetSMH4803A Datasheet (PDF)

SUMMIT MICROELECTRONICS, Inc. Distributed Power Hot Swap Controller www.DataSheet4U.com SMH4803A Preliminary FEATURES l Soft Starts Main Power Supply on Card Insertion or System Power Up l Senses Card Insertion via Short Pins or Ejector Switches l Master Enable to Allow System Control of Power Up or Down w Can be used as a Temperature Sense Input l Programmable Independent Controls of 3 DC/DC Converters w Not Enabled until Host Supply Fully Soft Started w Programmable Time Delay Between each E.

  SMH4803   SMH4803







Part Number SMH4802
Manufacturers Summit Microelectronics
Logo Summit Microelectronics
Description Programmable -48V Hot-Swap Controller
Datasheet SMH4803 DatasheetSMH4802 Datasheet (PDF)

SUMMIT MICROELECTRONICS, Inc. www.DataSheet4U.com SMH4802 Preliminary Information See Last Page Programmable -48V Hot-Swap Controller with Forced Shut Down FEATURES & APPLICATIONS l Soft Start Power Supply l Live Insertion into a -48V backplane l Programmable Control of a DC/DC Converter w I2C Power On/Off Control l Highly Programmable Circuit Breaker w Active In-rush Current Limiting w Over-current Filter Circuit Breaker Immunity to Voltage Steps and Current Spikes l Programmable Forced Shutd.

  SMH4803   SMH4803







Distributed Power Hot-Swap Controller

SMH4803 Distributed Power Hot-Swap Controller www.DataSheet4U.com 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 Programmable Host Voltage Monitoring – Programmable Under- and Over-voltage Detection • Programmable Power Good Delays for Sequencing DC/DC Converters • Programmable Circuit Breaker Function – Programmable Over-current Filter – Programmable Quick-Trip™ Circuit Breaker Values – Programmable Circuit Breaker Mode • Duty-Cycle Mode • • Latched Mode 2.5V and 5.0V reference outputs – Easy Expansion of External Monitor Functions uri Fe a t Pr ng TM og Quick-Trip ble aker a ra m m re it B u C irc ASSOCIATE MEMBER FUNCTIONAL BLOCK DIAGRAM ENPGB VDD 12V ref PG3# 50kΩ EN/TS 50kΩ PD1# PD2# + Programmable Delay ENPGA 50kΩ Filter PG2# Programmable Delay UV + PG1# Drain Sense 12V + + OV 2.5V ref VSS 5V 2.5V 12V current limit 5.0V ref Vgate Sense CBMode CBReset# CBSense Programmable Delay + Fault Latch & Duty Cycle Timer Vgate 50 mV + Programmable Quick-Trip Ref Voltage CBFault# 2041 BD 8.0 © SUMMIT MICROELECTRONICS, Inc. 2000 • 300 Orchard City Drive, Suite 131 • Campbell, CA 95008 • Telephone 408-378-6461 • Fax 408-378-6586 • www.summitmicro.com Characteristics subject to change without notice 2041 8.4 6/15/00 1 SMH4803 www.DataSheet4U.com Symbol Drain Sense Vgate EN/TS.


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