STMicroelectronics LM317K
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $94,999.99 | $94,999.99 |
| 15+ | $91,999.99 | $1,379,999.85 |
| 25+ | $89,999.99 | $2,249,999.75 |
| 50+ | $84,999.99 | $4,249,999.50 |
| 100+ | $74,999.99 | $7,499,999.00 |
| N+ | $15,000.00 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | |
| Packaging | | |
| Output Configuration | Obsolete |
| Output Type | Positive |
| Number of Regulators | Adjustable |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | 37V |
| Voltage Dropout (Max) | - |
| Current - Output | 1.5A |
| Current - Quiescent (Iq) | 10 mA |
| Current - Supply (Max) | - |
| PSRR | 80dB ~ 65dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | TO-204AA, TO-3 |
| Supplier Device Package | TO-3 |
| ROHS |
The LM317K from EVVO is a legendary adjustable linear voltage regulator, capable of delivering 1.5A with an output voltage adjustable up to 37V. Housed in a robust TO-3 metal package, it offers excellent thermal characteristics for high-power applications. Its low quiescent current and 66dB PSRR make it a reliable choice for a wide range of power supply designs.
- High Voltage Capability: Supports output voltages up to 37V, making it versatile for various high-voltage applications.
- Excellent Thermal Performance: The TO-3 metal package is designed for superior heat dissipation, ensuring reliable operation under heavy loads.
- Proven Reliability: A time-tested design known for its robustness and long-term stability in demanding environments.
- Low Quiescent Current: The 100 μA quiescent current contributes to overall system efficiency.
Bench Power Supplies
The LM317K's adjustable output up to 37V and 1.5A current capability make it a classic choice for building variable bench power supplies for electronics labs and hobbyists.
Battery Chargers
Its adjustable voltage and current limit features allow it to be configured as a simple, reliable constant-voltage/constant-current charger for lead-acid or lithium-ion batteries.
Audio Amplifier Power Supplies
The low noise and high PSRR of 66dB at 100Hz make it suitable for powering analog audio circuits, providing a clean and stable DC rail.
High-Voltage Industrial Sensors
With a maximum output of 37V, it can power industrial sensors and transmitters that require higher supply voltages than standard 5V or 3.3V rails.
Heavy-Duty Equipment
The TO-3 package is designed for high power dissipation, making the LM317K suitable for rugged industrial equipment where heat is a concern.
Custom Power Solutions
Its adjustable nature and wide input range make it a versatile building block for custom power supply designs in various embedded systems.
- Q: What is the output voltage range?
- A: The LM317K is an adjustable regulator with a maximum output voltage of 37V.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of output current.
- Q: What is the input voltage range?
- A: The input voltage range starts from 1.2V.
- Q: What is the dropout voltage?
- A: The dropout voltage is not specified in the provided data.
- Q: What is the quiescent current?
- A: The quiescent current is 100 μA.
- Q: What package is available?
- A: It is available in the classic TO-3 metal can package, known for excellent thermal performance.
- Q: What is the output voltage range?
- A: The LM317K is an adjustable regulator with a maximum output voltage of 37V.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of output current.
- Q: What is the input voltage range?
- A: The input voltage range starts from 1.2V.
- Q: What is the dropout voltage?
- A: The dropout voltage is not specified in the provided data.
- Q: What is the quiescent current?
- A: The quiescent current is 100 μA.
- Q: What package is available?
- A: It is available in the classic TO-3 metal can package, known for excellent thermal performance.

LM317K.pdf