Texas Instruments LM317AH/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $60.20 | $60.20 |
| 15+ | $20.14 | $302.10 |
| 25+ | $19.70 | $492.50 |
| 50+ | $18.61 | $930.50 |
| 100+ | $16.42 | $1,642.00 |
| N+ | $3.28 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Bulk | |
| 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 | Through Hole |
| Package / Case | TO-205AD, TO-39-3 Metal Can |
| Supplier Device Package | TO-3 |
| ROHS |  |
The LM317AH/NOPB is a versatile adjustable linear voltage regulator from National Semiconductor, delivering up to 1.5A with an output range of 1.25V to 37V. Housed in a rugged TO-39-3 metal package, it offers excellent thermal performance and a high PSRR of 80dB, ensuring clean, stable power for sensitive analog and digital circuits. Its low quiescent current and simple external resistor network make it a reliable choice for custom power supply designs.
- Wide Adjustable Range: Output from 1.25V to 37V provides flexibility for multiple applications without changing components.
- High Output Current: 1.5A capability supports power-hungry loads like motors and RF amplifiers.
- Excellent Ripple Rejection: 80dB PSRR at 120Hz ensures clean DC for audio and precision measurement circuits.
- Robust TO-39 Package: Metal can construction offers superior heat dissipation and mechanical durability.
Adjustable Power Supply
Use the LM317AH/NOPB to build a precision adjustable bench power supply. Its 1.25V to 37V output range and 1.5A current capability make it ideal for prototyping and testing circuits.
Battery Charger
Configure the regulator as a constant-voltage source for charging lead-acid or lithium-ion batteries. The adjustable output allows precise voltage setting to match battery chemistry.
Audio Amplifier Biasing
With a PSRR of 80dB at 120Hz, this LDO provides clean, ripple-free DC rails for audio preamplifiers and op-amp circuits, reducing hum and noise.
Industrial Sensor Supply
Power 4-20mA loop transmitters and industrial sensors with a stable 5V or 12V rail. The TO-39 metal can package ensures good thermal dissipation in harsh environments.
Laboratory Reference Voltage
Use the adjustable output to create a precise reference voltage for calibration equipment. The low quiescent current (10 mA) maintains accuracy under light loads.
Automotive Electronics
Regulate vehicle battery voltage (12V-14V) down to a stable 5V for microcontroller systems. The wide input range handles load-dump transients effectively.
- Q: What is the output voltage range of the LM317AH/NOPB?
- A: The output voltage is adjustable from 1.25V 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 up to 37V, with a minimum of 1.25V above the output.
- Q: What is the dropout voltage?
- A: The dropout voltage is not specified in the provided data; typically it is around 2V at 1A for this series.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA.
- Q: What package is available?
- A: The LM317AH/NOPB is available in a TO-39-3 package.
LM317AH/NOPB.pdf
- Q: What is the output voltage range of the LM317AH/NOPB?
- A: The output voltage is adjustable from 1.25V 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 up to 37V, with a minimum of 1.25V above the output.
- Q: What is the dropout voltage?
- A: The dropout voltage is not specified in the provided data; typically it is around 2V at 1A for this series.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA.
- Q: What package is available?
- A: The LM317AH/NOPB is available in a TO-39-3 package.
