SMH4811 Ver la hoja de datos (PDF) - Summit Microelectronics
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SMH4811 Datasheet PDF : 16 Pages
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SUMMIT
MICROELECTRONICS, Inc.
Distributed Power Hot-Swap Controller
SMH4811A
FEATURES
l Supply Range ±20VDC to >±500VDC
l Versatile Card Insertion Detection Supports:
w Multi-length Pin Systems
w Card Injector Switch Sensing
l Control Powering-on of DC/DC Converters
l Highly Programmable Host Voltage Monitoring
w Programmable Under- and Over-voltage
Detection
l Programmable Power Good Delay for enabling
the DC/DC Converter
l Programmable Circuit Breaker Function
w Programmable Over-current Filter
w Programmable Quick-Trip™ Circuit Breaker
Values
l 2.5V and 5.0V reference outputs
w Easy Expansion of External Monitor
Functions
FUNCTIONAL BLOCK DIAGRAM
VDD
DRAIN
SENSE
12VREF
ENPG
+
–
2.5VREF
5.0VREF
EN/TS
PD1#
PD2#
UV
OV
+
–
+
–
+
–
5V
12V
VSS
2.5V
FILTER
PROGRAMM-
ABLE
DELAY
PG#
VGATE
SENSE
VGATE
PROGRAMM-
ABLE
DELAY
+
–
50mV
+
Programmable
–
Quick Response
Ref. Voltage
DUTY
CYCLE
TIMER
CBSENSE
CBFAULT#
2044 BD 4.0
©SUMMIT MICROELECTRONICS, Inc., 2000 • 300 Orchard City Dr., Suite 131 • Campbell, CA 95008 • Phone 408-378-6461 • FAX 408-378-6586 • www.summitmicro.com
2044 4.1 8/1/00
Characteristics subject to change without notice
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