The LM138, LM238, LM338 are adjustable 3-
terminal positive voltage regulators capable of
supplying in excess of 5 A over a 1.2 V to 32 V
output range. They are exceptionally easy to use
and require only 2 resistors to set the output
voltage. Careful circuit design has resulted in
outstanding load and line regulation comparable
to many commercial power supplies. The LM138
family is supplied in a standard 3-lead transistor
package.