onsemi LM317TG
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.39 | $1.39 |
| 15+ | $1.34 | $20.10 |
| 25+ | $1.31 | $32.75 |
| 50+ | $1.24 | $62.00 |
| 100+ | $1.10 | $110.00 |
| N+ | $0.22 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | onsemi |
| 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 onsemi LM317TG is a legendary, adjustable positive-voltage linear regulator that has been a cornerstone of electronics design for decades. Capable of delivering up to 1.5A of output current with an adjustable output voltage from 1.2V to 37V, it offers unparalleled flexibility for a vast range of applications. Housed in a robust TO-220 package, this regulator is renowned for its reliability, thermal performance, and ease of use, making it a staple in both professional and hobbyist projects.
- Adjustable Output Versatility: The output voltage can be set anywhere from 1.2V to 37V with just two resistors, making it one of the most flexible regulators available.
- High Current Capability: The 1.5A output current is sufficient for a wide variety of loads, from sensitive analog circuits to power-hungry motors and LEDs.
- Excellent Noise Rejection: With PSRR up to 80dB, it provides a clean, stable output, making it suitable for high-fidelity audio and precision measurement equipment.
- Robust and Proven Design: The TO-220 package offers excellent thermal performance, and the design is known for its durability and long-term reliability.
Variable Bench Power Supplies
The LM317TG's adjustable output (1.2V to 37V) and 1.5A current capability make it the industry-standard choice for building simple, reliable variable bench power supplies for electronics labs and workshops.
Constant Current LED Drivers
By configuring the LM317TG as a constant current source, it can effectively drive high-power LEDs, providing a stable current that ensures consistent brightness and extends LED lifespan.
Battery Chargers
With its adjustable voltage and current limiting capabilities, the LM317TG can be used to build simple, effective chargers for lead-acid, NiMH, and Li-Ion batteries.
Audio Amplifier Power Supplies
Its high PSRR (80dB to 65dB at 120Hz) makes it an excellent choice for powering audio preamplifiers and low-power amplifiers, providing a clean, hum-free DC supply.
General-Purpose Laboratory Instrumentation
In test benches and lab equipment, the LM317TG is a go-to component for creating custom, adjustable voltage rails for prototyping and testing various electronic circuits.
HVAC and Appliance Control Boards
For industrial and appliance control systems, this regulator provides a robust and easily adjustable power supply for microcontrollers, sensors, and relay drivers, simplifying the power design.
- Q: What is the output voltage range of the LM317TG?
- A: The LM317TG is an adjustable regulator; its output voltage can be set from 1.2V up to 37V using two external resistors.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of output current, making it a versatile choice for a wide range of power supply applications.
- Q: What is the input voltage range?
- A: The input voltage can range from 3V up to 40V, providing great flexibility for various input supply rails.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically around 2V to 3V, depending on load and temperature, so the input must be sufficiently higher than the output.
- Q: What is the quiescent current?
- A: The quiescent current is typically 10 mA, which is the current drawn by the regulator's internal circuitry.
- Q: What package is this device available in?
- A: The LM317TG comes in a TO-220 package, which is a through-hole package with excellent thermal characteristics for power dissipation.
LM317TG.pdf
- Q: What is the output voltage range of the LM317TG?
- A: The LM317TG is an adjustable regulator; its output voltage can be set from 1.2V up to 37V using two external resistors.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of output current, making it a versatile choice for a wide range of power supply applications.
- Q: What is the input voltage range?
- A: The input voltage can range from 3V up to 40V, providing great flexibility for various input supply rails.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically around 2V to 3V, depending on load and temperature, so the input must be sufficiently higher than the output.
- Q: What is the quiescent current?
- A: The quiescent current is typically 10 mA, which is the current drawn by the regulator's internal circuitry.
- Q: What package is this device available in?
- A: The LM317TG comes in a TO-220 package, which is a through-hole package with excellent thermal characteristics for power dissipation.
