Overview
The LM317TG is an adjustable 3-terminal positive voltage regulator produced by onsemi. This device is capable of supplying an output current in excess of 1.5 A over an output voltage range of 1.2 V to 37 V. It is exceptionally easy to use and requires only two external resistors to set the output voltage. The LM317TG is designed with internal current limiting, thermal shutdown, and safe area compensation, making it essentially blow-out proof. This regulator is suitable for a wide variety of applications, including local, on-card regulation, and can also be used as a programmable output regulator or as a precision current regulator.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Part Number | LM317TG |
| Package Type | TO-220-3 |
| Output Current | Up to 1.5 A |
| Output Voltage Range | 1.2 V to 37 V |
| Input Voltage Range | 4.2 V to 40 V |
| Thermal Overload Protection | Internal |
| Short Circuit Current Limiting | Internal, constant with temperature |
| Output Transistor Safe-Area Compensation | Yes |
| Floating Operation | Yes, for high voltage applications |
| Operating Temperature Range | 0°C to 125°C |
Key Features
- Output current in excess of 1.5 A
- Output voltage adjustable between 1.2 V and 37 V
- Internal thermal overload protection
- Internal short circuit current limiting constant with temperature
- Output transistor safe-area compensation
- Floating operation for high voltage applications
- Eliminates the need for stocking many fixed voltages
- Pb-Free, Halogen Free/BFR Free, and RoHS Compliant
Applications
- Automation and Process Control
- Automotive
- Power Management
- Local, on-card regulation
- Programmable output regulator
- Precision current regulator
Q & A
- What is the output current range of the LM317TG?
The LM317TG can supply an output current in excess of 1.5 A.
- What is the adjustable output voltage range of the LM317TG?
The output voltage can be adjusted between 1.2 V and 37 V.
- Does the LM317TG have internal thermal overload protection?
Yes, the LM317TG has internal thermal overload protection.
- How does the LM317TG handle short circuit conditions?
The LM317TG has internal short circuit current limiting that is constant with temperature.
- What package type is the LM317TG available in?
The LM317TG is available in the TO-220-3 package type.
- Is the LM317TG suitable for high voltage applications?
Yes, the LM317TG supports floating operation for high voltage applications.
- What are the environmental compliance standards for the LM317TG?
The LM317TG is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant.
- How do you set the output voltage of the LM317TG?
The output voltage can be set using two external resistors.
- Can the LM317TG be used as a precision current regulator?
Yes, by connecting a fixed resistor between the adjustment and output terminals, the LM317TG can be used as a precision current regulator.
- What are some common applications of the LM317TG?
Common applications include automation and process control, automotive, power management, and local, on-card regulation.
