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參數(shù)資料
| 型號： | SMH4811AS |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | DISTRIBUTED POWER HOT SWAP CONTROLLER |
| 中文描述： | 分布式電源熱插拔控制器 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 358K |
| 代理商： | SMH4811AS |
Characteristics subject to change without notice
1
2044 6.1 2/8/01
SMH4811A
SUMMIT
MICROELECTRONICS, Inc.
Distributed Power Hot-Swap Controller
SUMMIT MICROELECTRONICS, Inc., 2000 300 Orchard City Dr., Suite 131 Campbell, CA 95008 Phone 408-378-6461 FAX 408-378-6586 www.summitmicro.com
Preliminary
Supply Range ±20VDC to >±500VDC
Versatile Card Insertion Detection Supports:
Multi-length Pin Systems
Card Injector Switch Sensing
Programmable Debounce Periods
Control Powering-on of DC/DC Converters
Highly Programmable Host Voltage Monitoring
Programmable Under- and Over-voltage
Detection
Programmable UV Filter
Programmable Power Good Delay for enabling
the DC/DC Converter
Programmable Circuit Breaker Function
Programmable Over-Current Filter
Programmable Quick-Trip Circuit Breaker
Values
2.5V and 5.0V reference outputs
Easy Expansion of External Monitor
Functions
FEATURES
The SMH4811A is designed to control hot swapping of
plug-in cards operating from a single supply ranging from
20V to 500V. It provides under-voltage and over-voltage
monitoring of the host power supply, drives an external
power MOSFET switch that connects the supply to the
load, and also protects against over-current conditions
that might disrupt the host supply. When the input and
output voltages to its controls are within specification, it
provides a Power Good logic output that may be used to
turn loads on (e.g. an isolated-output DC-DC converter,
or drive a LED status light). Additional features of the
SMH4811A include: temperature sense or master enable
input, 2.5V and 5V reference outputs for expanding moni-
tor functions, two Pin-Detect enable inputs for fault protec-
tion, and duty-cycle over-current protection.
DESCRIPTION
SIMPLIFIED APPLICATION DRAWING
VDD
VSS
CBSENSE
PD1#
PD2#
UV
OV
2.5VREF
PG#
5.0VREF
2044 SAD 5.1
0V
–48V
VGATE
Pin Detect
Pin Detect
DC/DC
SMH4811A
FAULT#
ENPG
Disable/Enable
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