DESCRIPTION

The LM317 is an adjustable 3-terminal positive voltage regulator capable of supplying 100mA over a 1.2V to 37V output range. It is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow-out proof. Also, the LM317 is available packaged in a standard TO-92 transistor package which is easy to use.

The LM317 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317 can be used as a precision current regulator.

FEATURES

• Adjustable output down to 1.2V

• Guaranteed 100 mA output current

• Line regulation typically 0.01%/V

• Load regulation typically 0.1%

• Current limit constant with temperature

• Eliminates the need to stock many voltages

• 80 dB ripple rejection

• Output is short circuit protected