STMicroelectronics LM317P
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.65 | $1.65 |
| 15+ | $1.09 | $16.35 |
| 25+ | $1.06 | $26.50 |
| 50+ | $1.00 | $50.00 |
| 100+ | $0.89 | $89.00 |
| N+ | $0.18 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | |
| Packaging | Tube | |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| 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-220-3 Full Pack |
| Supplier Device Package | TO-220FP |
| ROHS |  |
The LM317P from STMicroelectronics is a versatile adjustable linear voltage regulator delivering up to 1.5A of output current. With an output voltage range from 1.2V to 37V, it provides excellent flexibility for a wide variety of applications. Its high PSRR of 80dB at 120Hz ensures clean, ripple-free power for sensitive electronics. Housed in a TO-220FP package, it offers reliable thermal performance for demanding environments.
- Wide Adjustable Range: Output from 1.2V to 37V enables use in diverse applications from logic supplies to higher-voltage analog circuits.
- High Output Current: 1.5A capability supports power-hungry loads without additional pass transistors.
- Excellent Ripple Rejection: 80dB PSRR at 120Hz minimizes mains hum, ideal for audio and precision instrumentation.
- Robust Package: TO-220FP package provides good thermal dissipation for reliable operation under load.
Adjustable Power Supplies
Use the LM317P to build a variable bench power supply. Its 1.2V to 37V output range and 1.5A current capability make it ideal for prototyping and testing circuits that require different voltage levels.
Battery Chargers
Configure the LM317P as a constant-current source for charging lead-acid or lithium-ion batteries. The adjustable output allows precise voltage and current control, ensuring safe and efficient charging cycles.
Audio Amplifier Power Stages
With a PSRR of 80dB at 120Hz, the LM317P effectively filters mains hum and ripple, providing a clean, stable DC rail for audio preamplifiers and low-power amplifier stages.
Industrial Sensor Interfaces
Power sensitive analog sensors and transducers with a stable, adjustable supply. The low output noise and high ripple rejection improve measurement accuracy in industrial control systems.
Laboratory Test Equipment
Incorporate the LM317P into test fixtures and measurement instruments where a precise, adjustable reference voltage is required. Its robust TO-220FP package handles moderate thermal loads.
LED Driver Circuits
Use the LM317P in constant-current mode to drive high-brightness LEDs. The adjustable current limit protects LEDs from overcurrent and ensures consistent luminous output.
- Q: What is the output voltage range of the LM317P?
- A: The LM317P provides an adjustable output voltage from 1.2V 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 1.2V up to 40V (based on output voltage).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 3V at maximum output current.
- Q: What is the quiescent current?
- A: The quiescent current is typically 10 mA.
- Q: What package is available?
- A: The LM317P is available in the TO-220FP package.
LM317P.pdf
- Q: What is the output voltage range of the LM317P?
- A: The LM317P provides an adjustable output voltage from 1.2V 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 1.2V up to 40V (based on output voltage).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 3V at maximum output current.
- Q: What is the quiescent current?
- A: The quiescent current is typically 10 mA.
- Q: What package is available?
- A: The LM317P is available in the TO-220FP package.
