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SG109
  • SG109

SG109

In Production

The SG109 is a self-contained 5V regulator designed to provide local regulation at currents up to 1A for digital logic cards. This device is available in the hermetic TO-3 and TO-39 packages. The SG109's design has protective features principally current limiting to control the peak currents and thermal shutdown to protect against excessive power dissipation. These features make the device blowout proof. With the only added component being an optional input bypass capacitor, this regulator becomes extremely easy to apply. Utilizing an improved Bandgap reference design, problems that are normally associated with the Zener diode references, such as, drift in output voltage and large changes in the line and load regulation have been eliminatedMicrochip Ordering Part  Standar...

Microchip Technology SG109 Product Info

16 April 2026 2

Parameters

Driver Type

Hi Rel Linear Voltage Regulators

Linear Regulator Type

Positive Fixed

Line Regulation (%)

0.08

Load Regulation(%)

0.3

Rated IOUT Max

1000

VIN Min (V) V (volt)

7

VIN Max V (volt)

25

VOUT (V)

5.05

Tol Typ %

6

PSRR 1 kHz (dB)

50

Features

  • Fully Compatible with TTL and DTL
  • Output Current in Excess of 1A
  • Internal Thermal Overload Protection
  • No Additional External Components
  • Bandgap Reference Voltage
  • Foldback Current Limiting

Description

The SG109 is a self-contained 5V regulator designed to provide local regulation at currents up to 1A for digital logic cards. This device is available in the hermetic TO-3 and TO-39 packages. The SG109's design has protective features principally current limiting to control the peak currents and thermal shutdown to protect against excessive power dissipation. These features make the device blowout proof. With the only added component being an optional input bypass capacitor, this regulator becomes extremely easy to apply. Utilizing an improved Bandgap reference design, problems that are normally associated with the Zener diode references, such as, drift in output voltage and large changes in the line and load regulation have been eliminated


Microchip Ordering Part  Standard Microcircuit Drawing (SMD) 

SG109T-JAN Cross Reference M38510/10701BXA

SG109T-JAN Cross Reference M38510/10701BXX


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