Lm317t Variable Voltage Regulator

It was designed by bob pease who also worked for national semiconductor.

Lm317t variable voltage regulator.

The lm317t is a fully adjustable 3 terminal positive voltage regulator capable of supplying 1 5 amps with an output voltage ranging from around 1 25 volts to just over 30 volts. The lm317 voltage regulator has 3 pins. Lm317 variable voltage regulator circuit lm117 lm217 lm317 variable voltage regulator characteristics. Absolute maximum ratings are those values.

Pricing and availability on millions of electronic components from digi key electronics. Order today ships today. Stmicroelectronics alldatasheet datasheet datasheet search site for electronic. The output voltage v out is dependent on external resistor values r 1 and r 2 according to the following equation.

In input out output adj adjust. Variable voltage power supply. For example the input voltage pin can be fed 12v. It requires two external resistors to adjust the output voltage.

The lm317 is a 3 terminal positive voltage regulator with a 1 25 to 37 volts output voltage range. Below is the pinout. The lm317 regulator terminals are. Absolute maximum ratings symbol parameter value unit vi vo input reference differential voltage 40 v tiopo output currentoperating junction temperature for.

In this tutorial we will show you how to get the variable regulated voltage from the lm317 ic. Lm317 is an adjustable voltage regulator which takes an input voltage of 3 40v dc and provides a fixed output voltage of 1 25v to 37v dc. Lm317t linear voltage regulator ic 1 output 1 5a to 220ab from stmicroelectronics. Looking from the front of the voltage regulator the first pin on the left is the adjustable pin the middle is vout and the last pin on the right is vin.

Vin vin is the pin which receives the incoming voltage which is to be regulated down to a specified voltage. But what if need to vary the power supply voltage so here we have variable voltage regulator ic lm317. The lm317 is a popular adjustable positive linear voltage regulator it was designed by bob dobkin in 1976 while he worked at national semiconductor. 2 maximum ratings table 1.

1 2v to 37v voltage regulator lm317t datasheet lm317t circuit lm317t data sheet. The lm337 is the negative complement to the lm317 which regulates voltages below a reference. Internally limited a lm217 25 to 150 c lm317 0 to 125 lm317b 40 to 125 pd power dissipation internally limited tstg storage temperature 65 to 150 c note.