52149/52174
79HG REPLACEMENT
NEGATIVE ADJUSTABLE 5-AMP
VOLTAGE REGULATOR
Mii
HYBRID MICROELECTRONICS
PRODUCTS DIVISION
Features:
•
•
•
•
•
•
•
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Replacement for 79HG
5.0A Output Current
Internal Current And Thermal Overload Protection
Internal Short Circuit Current Limit
Low Drop-Out Voltage (Typically -2.2 V @ 5.0 A)
50W Power Dissipation
Electrically Isolated Case
Steel TO-3 Case
Applications:
•
•
Designed for use in general purpose applications
where adjustability is advantageous.
Military and Hi Rel Industrial applications where
hermeticity is required.
ORDER INFORMATION
52149
Standard
52174
MIL-STD-883 Screened
DESCRIPTION
The 52149/52174, which is a replacement for the 79HG, is an adjustable 4-terminal voltage regulator capable of supplying in
excess of 5 A over a –24 V to -2.55 V output range. This Hybrid Voltage Regulator has been designed with all the inherent
characteristics of the monolithic 4-terminal regulator; i.e., full thermal overload and short circuit protection. It is packaged in a
hermetically sealed 4-pin, TO-3 package providing 50W power dissipation. The regulator consists of a monolithic chip
driving a discrete series-pass element and short circuit detection transistors.
ABSOLUTE MAXIMUM RATINGS
Input Voltage.........................................................................................................................................................................-35 V
Internal Power Dissipation @T
c
= 25°C
...............................................................................................................................50W
Maximum Input-to-Output Voltage Differential...................................................................................................................... 35 V
Operating Junction Temperature ....................................................................................................................................... 150
°
C
Storage Temperature Range..............................................................................................................................-55
°
C to +150
°
C
Pin Temperature (Soldering, 60 seconds) ......................................................................................................................... 300
°
C
Commercial Temperature Range 52149 ..............................................................................................................0
°
C to +125
°
C
Military Temperature Range 52174....................................................................................................................-55
°
C to +125
°
C
Micropac Industries
cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac
reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION
•
905 E. Walnut St., Garland, TX 75040
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(972) 272-3571
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Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
12/12/01
1
MII [ Micropac Industries ]
