Distributed Power Hot-Swap Controller
SMH4803
Distributed Power Hot-Swap Controller www.DataSheet4U.com
FEATURES • Supply Range ±20VDC to >±500VDC • Versatile...
Description
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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