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.

Features:
• 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.