Texas Instruments LM317AEMP/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.40 | $2.40 |
| 15+ | $2.33 | $34.95 |
| 25+ | $2.28 | $57.00 |
| 50+ | $2.15 | $107.50 |
| 100+ | $1.90 | $190.00 |
| N+ | $0.38 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| 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) | 1.25V |
| 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 | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-261-4, TO-261AA |
| Supplier Device Package | SOT-223-4 |
| ROHS |  |
The LM317AEMP/NOPB from Texas Instruments is a versatile adjustable linear regulator in a compact SOT-223-4 package. Delivering up to 1.5A with an output range from 1.25V to 37V, it is one of the most flexible LDOs available. With PSRR up to 80dB at 120Hz, it ensures clean, stable power for audio, instrumentation, and general-purpose applications. Its small footprint makes it ideal for space-constrained designs without sacrificing performance.
- Wide Output Range: Adjustable from 1.25V to 37V, covering a broad spectrum of applications.
- High PSRR: Up to 80dB ripple rejection at 120Hz ensures clean output for sensitive circuits.
- Compact Package: SOT-223-4 saves board space while delivering 1.5A of current.
- Proven Architecture: Based on the industry-standard LM317 design, ensuring reliability and design familiarity.
Precision Voltage References
The LM317AEMP's adjustable output up to 37V and 80dB PSRR make it an excellent choice for creating precision voltage references in test equipment.
Variable Power Supplies for Hobbyists
Its 1.5A output and wide voltage range make it a staple for DIY bench power supplies and educational electronics projects.
LED Driver Circuits
With adjustable output, the LM317A can be configured as a constant-current source for driving high-brightness LEDs in lighting applications.
Audio Equipment Biasing
The high PSRR (80dB at 120Hz) ensures clean, ripple-free supply for audio preamplifiers and DACs, improving sound quality.
Battery Charger for Small Packs
Adjustable voltage allows precise charging of 2-3 cell lithium or lead-acid batteries at currents up to 1.5A.
Industrial Sensor Power
Provides stable, adjustable voltage for industrial sensors and transmitters requiring non-standard supply voltages.
- Q: What is the output voltage range of the LM317AEMP?
- A: The output voltage is adjustable from 1.25V up to 37V using external resistors.
- Q: What is the maximum output current?
- A: This regulator can deliver up to 1.5A of output current.
- Q: What is the input voltage range?
- A: The input voltage range starts from 1.25V (reference) and can go up to the maximum rated input for the device.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA, which is typical for this class of adjustable regulator.
- Q: What is the PSRR performance?
- A: The PSRR ranges from 80dB to 65dB at 120Hz, providing good ripple rejection across frequencies.
- Q: What package is available?
- A: The LM317AEMP comes in a compact SOT-223-4 package, ideal for space-constrained designs.
LM317AEMP/NOPB.pdf
- Q: What is the output voltage range of the LM317AEMP?
- A: The output voltage is adjustable from 1.25V up to 37V using external resistors.
- Q: What is the maximum output current?
- A: This regulator can deliver up to 1.5A of output current.
- Q: What is the input voltage range?
- A: The input voltage range starts from 1.25V (reference) and can go up to the maximum rated input for the device.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA, which is typical for this class of adjustable regulator.
- Q: What is the PSRR performance?
- A: The PSRR ranges from 80dB to 65dB at 120Hz, providing good ripple rejection across frequencies.
- Q: What package is available?
- A: The LM317AEMP comes in a compact SOT-223-4 package, ideal for space-constrained designs.
