LM317 design calculator

LM317 fixed output voltage

Calculate design for fixed output voltage using standard E12 or E24 resistors.
Input voltage (Vin) and output current (Iout) serves as reference for power loss and minimal dropout calculations.

LM317 variable output voltage

Calculate design for variable output voltage using standard E12 or E24 resistors and trimmers.
Vout high - minimal upper voltage level
Vout low - maximal lower voltage level
Input voltage (Vin) and output current (Iout) serves as reference for power loss and minimal dropout calculations.

Czech note: Zadávejte s desetinnou tečkou ;)

Vout	V
Vin	V
Iout	A
	E12 resistors (5% tolerance)
	E24 resistors (1% tolerance)

Vout high	V
Vout low	V
Vin	V
Iout	A
	E12 resistors (5% tolerance)
	E24 resistors (1% tolerance)