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 • (972) 272-3571 • Fax (972) 494-2281

www.micropac.com

12/13/01

1

52150/52175

POSITIVE ADJUSTABLE 5-AMP

78HGA REPLACEMENT

VOLTAGE REGULATOR

Mii

HYBRID MICROELECTRONICS

PRODUCTS DIVISION

Features:

•

Replacement for 78HGA

•

5.0 A Output Current

•

Internal Current And Thermal Limiting

•

Internal Short Circuit Current Limit

•

Low Drop-Out Voltage (Typically 2.3 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

52150

Standard

52175

MIL-STD-883 Screened

DESCRIPTION

The 52150/52175, which is a replacement for the 78HGA, is an adjustable 4-terminal positive voltage regulator

capable of supplying in excess of 5.0 A over a 5.0 V to 24 V output range. Only two external resistors are required to

set the output voltage. It is packaged in a hermetically sealed TO-3, and provides 50W power dissipation. The

regulator consists of a monolithic chip driving a discrete series-pass element. A beryllium-oxide substrate is used in

conjunction with an isothermal layout to optimize the thermal characteristics of each device and still maintain electrical

isolation between the various chips. This unique circuit design limits the maximum junction temperature of the power

output transistor to provide full automatic thermal overload protection. If the safe operating area is ever exceeded

(Note 1), the device simply shuts down rather than fail or damage other system components. This feature eliminates

the need to design costly regulators built from discrete components.

ABSOLUTE MAXIMUM RATINGS

Input Voltage.................................................................................................................................................................40 V

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 52150 .....................................................................................................0

°C to +125°C

Military Temperature Range 52175 ......................................................................................................... -55

°C to +125°C