The Texas Instruments LM317MKVURG3 is an adjustable positive linear voltage regulator delivering up to 500 mA output current. Built-in protection includes over-current, over-temperature, and short-circuit limiting.
LM317MKVURG3 Adjustable Linear Regulator, 500 mA, TO-252-3
MPNLM317MKVURG3
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Texas Instruments LM317MKVURG3, adjustable positive linear voltage regulator, 500 mA output, 1.25 V to 37 V output range, 40 V max input, PSRR 80 dB ~ 65 dB (120 Hz), TO-252-3 (DPak) surface-mount package, -40°C to 125°C junction temperature.
$0.7000Ref. price · indicative, final on quote
PackagingTO-252-3, DPAK (2 Leads + Tab), SC-63
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Output type | Adjustable |
| Mounting | Surface Mount |
| Voltage - input | 40V |
| Voltage - output | 37V |
| Voltage - output (Min (Fixed)) | 1.25V |
| Output current | 500mA |
| Current - quiescent | 10 mA |
| Operating temperature | -40°C~125°C(TJ) |
| PSRR | 80dB ~ 65dB (120Hz) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | TO-252-3, DPak (2 Leads + Tab), SC-63 |
| Protection features | Over Current, Over Temperature, Short Circuit |
| Number of regulators | 1 |
| Output configuration | Positive |
Product details
Frequently asked questions
Can the LM317MKVURG3 replace the LM317T in a through-hole design?
Not as a direct drop-in. The LM317MKVURG3 is a surface-mount TO-252-3 package; the LM317T is a through-hole TO-220. The pin assignments differ, and the tab on the TO-252-3 is the output pin, not electrically isolated. A new PCB layout is required.
What is the LM317MKVURG3's PSRR specification?
The LM317MKVURG3 lists PSRR of 80 dB to 65 dB at 120 Hz, depending on load current.
What are equivalent parts to the LM317MKVURG3 from other manufacturers?
Functional equivalents in the adjustable positive regulator class include the LM1085IS-ADJ/NOPB (3 A output, 75 dB PSRR at 120 Hz) and the LMS1587IS-3.3/NOPB (3 A fixed 3.3 V output, 72 dB PSRR at 120 Hz). Both are higher-current parts in different packages; verify pin compatibility and thermal design before substitution.