I really have read a lot about the LM338, but still with problems.
I'm making a regulator from 12DC to 5DC. The exactly attached circuit from data sheet.
R1 = 120ohms; R2 = 360Ohms. 5.23V Out.
I'm testing it with a small DC motor of 15mA but the out voltage drops to about 2.7V.
If I'm doing right the LM338K is dissipating (12-5.23)*15mA = 0.10155W, so I could ignore a heat sink.
What should I do to have the 5V on out?
I'm making a regulator from 12DC to 5DC. The exactly attached circuit from data sheet.
R1 = 120ohms; R2 = 360Ohms. 5.23V Out.
I'm testing it with a small DC motor of 15mA but the out voltage drops to about 2.7V.
If I'm doing right the LM338K is dissipating (12-5.23)*15mA = 0.10155W, so I could ignore a heat sink.
What should I do to have the 5V on out?
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