STMicroelectronics LM317MS-TR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.98 | $0.98 |
| 15+ | $0.64 | $9.60 |
| 25+ | $0.63 | $15.75 |
| 50+ | $0.60 | $30.00 |
| 100+ | $0.53 | $53.00 |
| N+ | $0.11 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | 37V |
| Voltage Dropout (Max) | - |
| Current - Output | 500mA |
| Current - Quiescent (Iq) | 10 mA |
| Current - Supply (Max) | - |
| PSRR | 80dB ~ 65dB (120Hz) |
| Control Features | - |
| Protection Features | Over Temperature, Short Circuit |
| Operating Temperature | 0°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-261-4, TO-261AA |
| Supplier Device Package | SOT-223 |
| ROHS |  |
The LM317MS-TR from STMicroelectronics is a classic adjustable linear regulator offering an output range from 1.2V to 37V and up to 500mA. Housed in a surface-mount SOT-223 package, it provides excellent 80dB ripple rejection at 120Hz, making it suitable for audio and precision analog circuits. Its adjustable nature offers design flexibility across various power supply applications.
- Adjustable Output: 1.2V to 37V range provides maximum design flexibility.
- High Ripple Rejection: 80dB at 120Hz ensures clean DC for audio and instrumentation.
- Robust Current: 500mA output handles a wide range of loads.
- Surface-Mount Package: SOT-223 simplifies PCB assembly and reduces space.
Adjustable Power Supply for Benchtop
The 1.2V to 37V adjustable output makes it a versatile building block for lab power supplies, with 500mA capability for driving op-amps and small loads.
Battery Charger Circuit
Set the output to the required float voltage (e.g., 4.2V for Li-ion) and use the current limit to charge batteries safely at up to 500mA.
Audio Preamplifier Supply
The 80dB PSRR at 120Hz effectively rejects mains hum, providing a quiet rail for audio op-amps in phono or microphone preamps.
Industrial Sensor Excitation
Provides a stable, adjustable excitation voltage for bridge sensors (strain gauges, RTDs) in process control, with low noise for accurate measurements.
Automotive Aftermarket Electronics
Regulates vehicle battery voltage (9-16V) down to a stable 5V or 3.3V for dashcams or GPS trackers, with thermal protection for harsh environments.
LED Driver (Constant Voltage)
Configure as a constant-voltage source for driving LED strips, with adjustable output to match LED forward voltage requirements.
- Q: What is the output voltage range?
- A: The output is adjustable from 1.2V to 37V.
- Q: What is the maximum output current?
- A: It can supply up to 500mA.
- Q: What is the input voltage range?
- A: Input voltage can range from 4.2V to 40V (based on output range).
- Q: What is the quiescent current?
- A: Typical quiescent current is 10mA.
- Q: What is the PSRR performance?
- A: PSRR is 80dB at 120Hz, reducing to 65dB at higher frequencies.
- Q: What package is available?
- A: Available in SOT-223 package.
LM317MS-TR.pdf
- Q: What is the output voltage range?
- A: The output is adjustable from 1.2V to 37V.
- Q: What is the maximum output current?
- A: It can supply up to 500mA.
- Q: What is the input voltage range?
- A: Input voltage can range from 4.2V to 40V (based on output range).
- Q: What is the quiescent current?
- A: Typical quiescent current is 10mA.
- Q: What is the PSRR performance?
- A: PSRR is 80dB at 120Hz, reducing to 65dB at higher frequencies.
- Q: What package is available?
- A: Available in SOT-223 package.
