Texas Instruments LM317MDT/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.10 | $2.10 |
| 15+ | $2.03 | $30.45 |
| 25+ | $1.99 | $49.75 |
| 50+ | $1.88 | $94.00 |
| 100+ | $1.66 | $166.00 |
| N+ | $0.33 | Price Inquiry |
Request Quote / Inquiry
| 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 | 500mA |
| 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 (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-252-3, DPAK (2 Leads + Tab), SC-63 |
| Supplier Device Package | TO-252-3 |
| ROHS |  |
The LM317MDT is a classic adjustable linear voltage regulator from Texas Instruments, capable of delivering 500mA with an output voltage adjustable from 1.25V to 37V. Its robust design includes internal current limiting and thermal overload protection. The TO-252 package offers a compact footprint for PCB designs. With a typical PSRR of 80dB, it provides excellent ripple rejection for audio and precision applications.
- Versatile Adjustability: Output voltage set with just two resistors, from 1.25V to 37V, covering a wide range of applications.
- Excellent Ripple Rejection: 80dB PSRR at 120Hz effectively removes mains hum in audio circuits.
- Robust Protection: Built-in current limiting and thermal overload protection safeguard the regulator and load.
- Proven Reliability: Industry-standard LM317 architecture with decades of field-proven performance.
Adjustable Bench Power Supplies
The 1.25V to 37V adjustable output makes it a classic choice for hobbyist and lab bench supplies, providing a versatile voltage source.
Battery Chargers
With external resistor dividers, it can be configured as a constant-voltage/constant-current charger for lead-acid or lithium batteries.
Audio Amplifier Power Rails
The 80dB PSRR at 120Hz effectively filters mains hum, making it suitable for pre-amplifier stages in audio equipment.
Industrial Control Systems
Its robust 500mA output and wide input range allow it to power logic circuits and sensors in industrial controllers.
LED Driver Applications
When used as a constant-current source, it can drive high-brightness LEDs with stable current, ensuring consistent light output.
Post-Regulation for Switching Supplies
Placed after a DC-DC converter, it reduces ripple and provides a clean, low-noise output for sensitive analog loads.
- Q: What is the output voltage range?
- A: The LM317MDT is adjustable from 1.25V to 37V.
- Q: What is the maximum output current?
- A: It can provide up to 500mA of output current.
- Q: What is the input voltage range?
- A: The input voltage can range from 1.25V up to 40V (max).
- Q: What is the dropout voltage?
- A: Dropout voltage is typically 1.2V at full load (not specified in provided data, typical for LM317 family).
- Q: What is the quiescent current?
- A: The quiescent current is typically 10 mA.
- Q: What package is available?
- A: It is available in a TO-252-3 (DPAK) package.
LM317MDT/NOPB.pdf
- Q: What is the output voltage range?
- A: The LM317MDT is adjustable from 1.25V to 37V.
- Q: What is the maximum output current?
- A: It can provide up to 500mA of output current.
- Q: What is the input voltage range?
- A: The input voltage can range from 1.25V up to 40V (max).
- Q: What is the dropout voltage?
- A: Dropout voltage is typically 1.2V at full load (not specified in provided data, typical for LM317 family).
- Q: What is the quiescent current?
- A: The quiescent current is typically 10 mA.
- Q: What package is available?
- A: It is available in a TO-252-3 (DPAK) package.
