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MC3423DR2G датащи(PDF) 1 Page - ON Semiconductor

номер детали MC3423DR2G
подробное описание детали  Overvoltage Crowbar Sensing Circuit
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производитель  ONSEMI [ON Semiconductor]
домашняя страница  http://www.onsemi.com
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© Semiconductor Components Industries, LLC, 2005
March, 2005 − Rev. 5
1
Publication Order Number:
MC3423/D
MC3423
Overvoltage Crowbar
Sensing Circuit
This overvoltage protection circuit (OVP) protects sensitive
electronic circuitry from overvoltage transients or regulator failures
when used in conjunction with an external “crowbar” SCR. The
device senses the overvoltage condition and quickly “crowbars” or
short circuits the supply, forcing the supply into current limiting or
opening the fuse or circuit breaker.
The protection voltage threshold is adjustable and the MC3423 can
be programmed for minimum duration of overvoltage condition
before tripping, thus supplying noise immunity.
The MC3423 is essentially a “two terminal” system, therefore it
can be used with either positive or negative supplies.
Features
Pb−Free Package is Available
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Differential Power Supply Voltage
VCC−VEE
40
Vdc
Sense Voltage (1)
VSense1
6.5
Vdc
Sense Voltage (2)
VSense2
6.5
Vdc
Remote Activation Input Voltage
Vact
7.0
Vdc
Output Current
IO
300
mA
Operating Ambient Temperature Range
TA
0 to +70
°C
Operating Junction Temperature
TJ
125
°C
Storage Temperature Range
Tstg
−65 to +150
°C
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits
are exceeded, device functional operation is not implied, damage may occur
and reliability may be affected.
Figure 1. Simplified Application
Vout
Vin
Cout
Current
Limited
DC
Power
Supply
O. V. P.
MC3423
+
MARKING
DIAGRAMS
MC3423P1
= Device Code
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
SOIC−8
D SUFFIX
PLASTIC PACKAGE
CASE 751
PIN CONNECTIONS
1
2
3
45
6
7
8
VCC
Sense 1
Sense 2
Current
Source
Drive
Output
VEE
Indicator
Output
Remote
Activation
(Top View)
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
ORDERING INFORMATION
3423
ALYW
1
8
1
8
MC3423P1
AWL
YYWW
3423
= Device Code
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
1
8
PDIP−8
P1 SUFFIX
PLASTIC PACKAGE
CASE 626
http://onsemi.com


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