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LM309 - 5-Volt Regulator

General Description

The LM109 series are complete 5V regulators fabricated on a single silicon chip.

They are designed for local regulation on digital logic cards, eliminating the distribution problems association with single-point regulation.

The devices are available in two standard transistor packages.

Key Features

  • n Specified to be compatible, worst case, with TTL and DTL n Output current in excess of 1A n Internal thermal overload protection n No external components required Schematic Diagram DS007138-1 © 1999 National Semiconductor Corporation DS007138 www. national. com Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage Power Dissipation 35V In.

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The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LM109/LM309 5-Volt Regulator April 1998 LM109/LM309 5-Volt Regulator General Description The LM109 series are complete 5V regulators fabricated on a single silicon chip. They are designed for local regulation on digital logic cards, eliminating the distribution problems association with single-point regulation. The devices are available in two standard transistor packages. In the solid-kovar TO-5 header, it can deliver output currents in excess of 200 mA, if adequate heat sinking is provided. With the TO-3 power package, the available output current is greater than 1A. The regulators are essentially blowout proof. Current limiting is included to limit the peak output current to a safe value. In addition, thermal shutdown is provided to keep the IC from overheating.