LM140/LM340A/LM340/LM7800C Series 3-Terminal Positive Regulators
May 1999
LM140/LM340A/LM340/LM7800C Series 3-Terminal...
LM140/LM340A/LM340/LM7800C Series 3-Terminal Positive Regulators
May 1999
LM140/LM340A/LM340/LM7800C Series 3-Terminal Positive Regulators
General Description
The LM140/LM340A/LM340/LM7800C monolithic 3-terminal positive
voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.0A output current. They are intended as fixed
voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed
voltage regulators, these devices can be used with external components to obtain adjustable output
voltages and currents.
Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improv...