Texas Instruments LM317LCPK
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.52 | $0.52 |
| 15+ | $0.51 | $7.65 |
| 25+ | $0.50 | $12.50 |
| 50+ | $0.47 | $23.50 |
| 100+ | $0.41 | $41.00 |
| N+ | $0.08 | 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) | 38V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | 32V |
| Voltage Dropout (Max) | - |
| Current - Output | 100mA |
| Current - Quiescent (Iq) | 2.5 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 | Surface Mount |
| Package / Case | TO-243AA |
| Supplier Device Package | SOT-89-3 |
| ROHS |  |
The LM317LCPK from Texas Instruments is an adjustable linear regulator offering an output range from 1.2V to 32V with up to 100mA current. Its classic LM317 architecture provides robust thermal protection and 80dB PSRR at 120Hz, making it suitable for audio and industrial applications. The SOT-89-3 package balances power dissipation with compact size.
- Wide Adjustability: Output from 1.2V to 32V covers diverse application needs without multiple fixed regulators.
- Excellent Ripple Rejection: 80dB PSRR at 120Hz eliminates mains hum in audio circuits.
- Proven Reliability: Industry-standard LM317 architecture with thermal overload protection.
- Compact SOT-89-3: Smaller than TO-220 while handling 100mA.
Adjustable Power Supplies
The 1.2V to 32V adjustable output makes it a versatile building block for bench power supplies and variable voltage references in lab equipment.
Audio Preamplifier Biasing
With 80dB PSRR at 120Hz, it effectively rejects mains hum, providing clean bias voltages for audio preamp stages.
Industrial Sensor Calibration
Use as a precision adjustable reference for calibrating pressure or temperature sensors across a wide voltage range.
Battery Charger Control
The adjustable output allows setting precise charge voltages for NiMH or lead-acid batteries up to 32V.
HV Power Supply Regulation
For low-current high-voltage rails (up to 32V), this LDO provides stable regulation for tube circuits or op-amp supplies.
Prototyping and Education
Its adjustable nature and SOT-89-3 package make it ideal for breadboard-friendly designs in university labs.
- Q: What is the output voltage range?
- A: The output is adjustable from 1.2V to 32V.
- Q: What is the maximum output current?
- A: It can provide up to 100mA.
- Q: What is the input voltage range?
- A: Input voltage can be up to 32V (refer to datasheet for limits).
- Q: What is the quiescent current?
- A: Typical quiescent current is 2.5mA.
- Q: What is the PSRR performance?
- A: PSRR is 80dB to 65dB at 120Hz.
- Q: What package is available?
- A: It comes in a SOT-89-3 package.
LM317LCPK.pdf
- Q: What is the output voltage range?
- A: The output is adjustable from 1.2V to 32V.
- Q: What is the maximum output current?
- A: It can provide up to 100mA.
- Q: What is the input voltage range?
- A: Input voltage can be up to 32V (refer to datasheet for limits).
- Q: What is the quiescent current?
- A: Typical quiescent current is 2.5mA.
- Q: What is the PSRR performance?
- A: PSRR is 80dB to 65dB at 120Hz.
- Q: What package is available?
- A: It comes in a SOT-89-3 package.
