Overview
The LM317D2TG is an adjustable 3-terminal positive voltage regulator produced by onsemi. This device is capable of supplying in excess of 1.5 A over an output voltage range of 1.2 V to 37 V. It is exceptionally easy to use, requiring only two external resistors to set the output voltage. The LM317D2TG features 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 a precision current regulator.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Maximum Output Current | 1.5 | A |
| Output Voltage Range | 1.2 to 37 | V |
| Input-Output Voltage Differential | -0.3 to 40 | Vdc |
| Power Dissipation (Case 221A, TA = +25°C) | Internally Limited | W |
| Thermal Resistance, Junction-to-Ambient | 65 to 70 | °C/W |
| Thermal Resistance, Junction-to-Case | 5.0 | °C/W |
| Operating Junction Temperature Range | -55 to +150 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Line Regulation (TA = +25°C, 3.0 V ≤ VI-VO ≤ 40 V) | 0.01 to 0.07 | %/V |
| Load Regulation (TA = +25°C, 10 mA ≤ IO ≤ Imax) | 0.1 to 25 | mV |
| Adjustment Pin Current | 50 to 100 | μA |
| Reference Voltage (3.0 V ≤ VI-VO ≤ 40 V, 10 mA ≤ IO ≤ Imax) | 1.2 to 1.3 | V |
Key Features
- Output Current in Excess of 1.5 A
- Output 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 Stocking many Fixed Voltages
- Available in Surface Mount D2PAK-3 and Standard 3-Lead Transistor Package
- NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC-Q100 Qualified and PPAP Capable
- Pb-Free, Halogen Free/BFR Free and RoHS Compliant
Applications
The LM317D2TG is versatile and can be used in a variety of applications, including:
- Local, on-card regulation
- Programmable output regulators
- Precision current regulators by connecting a fixed resistor between the adjustment and output terminals
- High voltage applications due to its floating operation capability
- Automotive applications with the NCV317 prefix, which is AEC-Q100 qualified and PPAP capable
Q & A
- What is the maximum output current of the LM317D2TG?
The maximum output current of the LM317D2TG is 1.5 A.
- What is the output voltage range of the LM317D2TG?
The output voltage range of the LM317D2TG is from 1.2 V to 37 V.
- What kind of protection does the LM317D2TG have?
The LM317D2TG features internal thermal overload protection, internal short circuit current limiting, and safe area compensation.
- How is the output voltage set for the LM317D2TG?
The output voltage is set using two external resistors connected to the adjustment and output terminals.
- Can the LM317D2TG be used as a precision current regulator?
Yes, the LM317D2TG can be used as a precision current regulator by connecting a fixed resistor between the adjustment and output terminals.
- What are the thermal resistance values for the LM317D2TG?
The thermal resistance, junction-to-ambient, is 65 to 70 °C/W, and junction-to-case is 5.0 °C/W.
- What is the operating junction temperature range for the LM317D2TG?
The operating junction temperature range is -55 to +150 °C.
- Is the LM317D2TG RoHS compliant?
Yes, the LM317D2TG is Pb-Free, Halogen Free/BFR Free, and RoHS compliant.
- Can the LM317D2TG be used in automotive applications?
Yes, with the NCV317 prefix, it is AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.
- What are the package options for the LM317D2TG?
The LM317D2TG is available in Surface Mount D2PAK-3 and Standard 3-Lead Transistor Package.
