LM317MKVURG3
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | TO-252-3, DPak (2 Leads + Tab), SC-63 |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Voltage - Input (Max) | 40V |
| Output Type | Adjustable |
| Current - Output | 500mA |
| Supplier Device Package | TO-252-3 |
| Output Configuration | Positive |
| Current - Quiescent (Iq) | 10 mA |
| Control Features | - |
| Voltage - Output (Min/Fixed) | 1.25V |
| Voltage - Output (Max) | 37V |
| Number of Regulators | 1 |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| PSRR | 80dB ~ 65dB (120Hz) |
| Voltage Dropout (Max) | - |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | LM317 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,500 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
LM317MKVURG3 Adjustable Positive Linear Regulator IC 500mA
The LM317MKVURG3 is a high-reliability adjustable positive linear voltage regulator manufactured by Texas Instruments (TI), designed for flexible power supply solutions in industrial, consumer, and embedded applications. Housed in a 3-pin TO-252 surface-mount package (6.6×10.11mm footprint), it operates over an industrial temperature range of -40°C to +125°C, with a maximum input voltage of 40V and an adjustable output voltage range of 1.25V to 37V, capable of delivering up to 500mA output current. This device features 3% output voltage accuracy, 0.01% typical line regulation, and 0.1% typical load regulation.
Equipped with user-friendly and robust protection features, the LM317MKVURG3 requires only two external resistors to set the desired output voltage, simplifying system design and eliminating the need for multiple fixed-voltage regulators. It integrates internal short-circuit current limiting, thermal overload protection, and output transistor safe-area compensation, making it essentially blow-out proof and suitable for harsh operating environments. As a floating regulator with no dedicated ground pin, its quiescent current flows to the load rather than being dissipated, enabling high-voltage floating operation if the input-output differential remains below 40V. It operates stably without an output capacitor, though adding one improves transient response, and supports ceramic capacitors with minimal output ringing.
Alternative linear regulator Models
● LM317MKVURG3.A: TI's variant with identical electrical and thermal performance, 3-pin TO-252 package, and tape-and-reel packaging for high-volume production
● LM317MABDTRKG: TI's 500mA adjustable regulator in DPAK-3 package, similar voltage range and protection features for footprint-compatible designs
● LM317AG-TN3-R: TI's industrial-grade adjustable regulator with comparable specs, suitable for backward-compatible substitutions
● LM317MBDTG: onsemi's 500mA adjustable linear regulator, 3-pin DPAK package, matching voltage range for cross-supplier replacement
● KA317ETU: Fairchild's classic adjustable regulator, 3-pin TO-220 package, similar functionality for through-hole or surface-mount design adaptations.
