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SMH4803

Summit Microelectronics
Part Number SMH4803
Manufacturer Summit Microelectronics
Description Distributed Power Hot-Swap Controller
Published Mar 10, 2009
Detailed Description SMH4803 Distributed Power Hot-Swap Controller www.DataSheet4U.com FEATURES • Supply Range ±20VDC to >±500VDC • Versatile...
Datasheet PDF File SMH4803 PDF File

SMH4803
SMH4803

Overview
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 PD1# PD2# CBFault# CBReset# CBMode CBSense Vss UV OV 5V 2.
5V ENPGB ENPGA PG3# PG1# PG2# Vdd Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Description Drain sense input Output to MOSFET gate Enable/Temp Sense input Pin Detect 1 (active LO) Pin Detect 2 (active LO) Circuit Breaker Fault output Circuit Breaker Reset intput Circuit Breaker Mode control Cicruit Breaker Sense input Negative Supply Connection Under Voltage input Over Voltage input 5V reference output 2.
5V reference output E...


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