STMicroelectronics LM317T-DG
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.16 | $1.16 |
| 15+ | $0.76 | $11.40 |
| 25+ | $0.75 | $18.75 |
| 50+ | $0.71 | $35.50 |
| 100+ | $0.62 | $62.00 |
| N+ | $0.12 | 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 |
| Supplier Device Package | TO-220 |
| ROHS |  |
The LM317T-DG from STMicroelectronics is a versatile adjustable linear voltage regulator. It delivers up to 1.5A of output current with an output voltage range from 1.2V to 37V. Housed in a robust TO-220 package, it offers excellent ripple rejection of 80dB at 120Hz, making it suitable for audio and precision applications. Its low quiescent current of 10mA ensures efficient operation in battery-powered designs.
- Wide Adjustable Range: Output from 1.2V to 37V provides design flexibility for various voltage requirements.
- High Output Current: 1.5A capability supports power-hungry loads and multiple ICs.
- Excellent Ripple Rejection: 80dB PSRR at 120Hz ensures clean, stable output for sensitive analog circuits.
- Robust TO-220 Package: Facilitates easy heatsinking for high-power applications.
Adjustable Power Supply
Use the LM317T-DG 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.
Battery Charger
Configure the LM317T-DG as a constant-current source for charging lead-acid or lithium batteries. The adjustable output allows precise voltage setpoints for different battery chemistries.
Audio Amplifier Power
Power low-noise audio preamplifiers with the LM317T-DG. Its PSRR of 80dB at 120Hz helps reject mains hum and ripple, ensuring clean audio supply rails.
Industrial Control Systems
Use the LM317T-DG in industrial equipment requiring a stable, adjustable reference voltage. The TO-220 package with a heatsink can handle moderate power dissipation in control cabinets.
Laboratory Instrumentation
Provide a precise, adjustable local supply for sensors and op-amps in lab instruments. The 1.5A output can power multiple ICs while maintaining regulation.
LED Driver
Drive high-power LEDs with a constant current using the LM317T-DG. Its adjustable output and current limiting capability allow flexible LED string configurations.
- Q: What is the output voltage range of the LM317T-DG?
- A: The LM317T-DG provides an adjustable output voltage from 1.2V up to 37V.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 1.2V above the desired output voltage, up to a maximum of 37V.
- Q: What is the dropout voltage?
- A: The dropout voltage is not specified in the provided data; typically it is around 2V for this series.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA.
- Q: What package is available?
- A: It comes in a TO-220 package.
LM317T-DG.pdf
- Q: What is the output voltage range of the LM317T-DG?
- A: The LM317T-DG provides an adjustable output voltage from 1.2V up to 37V.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 1.2V above the desired output voltage, up to a maximum of 37V.
- Q: What is the dropout voltage?
- A: The dropout voltage is not specified in the provided data; typically it is around 2V for this series.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA.
- Q: What package is available?
- A: It comes in a TO-220 package.
