Voltage Regulator – How to Get More Amps from a Voltage Regulator?


I'm a noob that is just getting started.

I'm using an LM317T to generate 6V but I need a little more amperage. Can I just double my LM317T and resistors configuration and put them in parallel?


simulate this circuit – Schematic created using CircuitLab

Ignore the resistor.

Best Answer

TI's datasheet shows to ways to increase the current output of a 317. The first one is basically what you're suggesting:

enter image description here

Notice the 0.2 Ohm resistors at each output. These allow for differences in the reference voltage between the 317 chips.

The second one uses external transistors instead of paralleling 317's:

enter image description here

This concept can also be done with a single external transistor as shown here:

enter image description here