Electronics
LM317 Voltage Regulator Calculator
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Find output
Find R2
LM317
Vin
Vout
ADJ
Input voltage
V
R2 adjust resistor
Ω
R1 set resistor
Ω
Load current
mA
Adjust pin current
µA
Dropout voltage
V
Uses the ideal LM317 equation. Real output depends on tolerance, minimum load current, heatsinking, package thermal resistance, and layout.
Output voltage
5.036 V
Output voltage: 5.036 V · Input has headroom
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Required R2
720 Ω
Minimum input voltage
8.036 V
Divider current
5.208 mA
Regulator heat
0.696 W