Texas Instruments LM317S/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.59 | $2.59 |
| 15+ | $2.51 | $37.65 |
| 25+ | $2.46 | $61.50 |
| 50+ | $2.32 | $116.00 |
| 100+ | $2.05 | $205.00 |
| N+ | $0.41 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Tube | |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 37V |
| 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 | 64dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-4, D2PAK (3 Leads + Tab), TO-263AA |
| Supplier Device Package | TO-263 (DDPAK-3) |
| ROHS |  |
The LM317S/NOPB from Texas Instruments is a versatile, adjustable linear voltage regulator capable of delivering 1.5A over an output voltage range of 1.25V to 37V. This industry-standard device requires only two external resistors to set the output voltage. With a typical quiescent current of 10mA and a PSRR of 64dB at 120Hz, it provides reliable, low-noise performance. The TO-263 (DDPAK-3) package ensures excellent power dissipation for demanding applications.
- Wide Voltage Range: Adjustable output from 1.25V to 37V provides maximum design flexibility.
- Proven Reliability: Industry-standard architecture with decades of field-proven performance.
- High Current: 1.5A output current supports a broad range of loads.
- Low Noise: 64dB PSRR at 120Hz effectively filters line frequency noise.
Adjustable Bench Power Supplies
The wide 1.25V to 37V output range and 1.5A current capability make it a classic choice for DIY and lab bench power supplies requiring precise voltage adjustment.
Audio Amplifier Biasing
With 64dB PSRR at 120Hz, it effectively rejects mains hum, making it suitable for powering audio preamplifier stages and op-amp circuits.
Battery Chargers
The adjustable output allows setting precise charge voltages for various battery chemistries, while the 1.5A limit is suitable for charging medium-capacity cells.
Industrial Control Systems
Its robust TO-263 package and high input voltage tolerance make it reliable for powering industrial sensors, PLCs, and control logic from 24V rails.
HVAC Controllers
Used to derive stable 5V or 3.3V logic rails from higher unregulated voltages in heating, ventilation, and air conditioning systems.
Test and Measurement Equipment
The low noise and adjustable output make it ideal for powering precision reference circuits and measurement bridges.
- Q: What is the output voltage range?
- A: The output voltage is adjustable from 1.25V up to 37V.
- Q: What is the maximum output current?
- A: The maximum output current is 1.5A.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.25V up to 40V (absolute max).
- Q: What is the quiescent current?
- A: The quiescent current is typically 10mA.
- Q: What is the package type?
- A: The package is TO-263 (DDPAK-3).
- Q: What is the PSRR?
- A: PSRR is 64dB at 120Hz.
LM317S/NOPB.pdf
- Q: What is the output voltage range?
- A: The output voltage is adjustable from 1.25V up to 37V.
- Q: What is the maximum output current?
- A: The maximum output current is 1.5A.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.25V up to 40V (absolute max).
- Q: What is the quiescent current?
- A: The quiescent current is typically 10mA.
- Q: What is the package type?
- A: The package is TO-263 (DDPAK-3).
- Q: What is the PSRR?
- A: PSRR is 64dB at 120Hz.
