Overview
The LM317MADTRKG is an adjustable three-terminal positive voltage regulator produced by Onsemi. It is capable of supplying in excess of 500 mA over an output voltage range of 1.2 V to 37 V. This regulator is exceptionally easy to use, requiring only two external resistors to set the output voltage. It features internal current limiting, thermal shutdown, and safe area compensation, making it essentially blow-out proof. The LM317MADTRKG is versatile and can be used in various applications, including local, on-card regulation, as well as in configurations such as adjustable switching regulators, programmable output regulators, and precision current regulators.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage Range | 1.2 to 37 | V |
| Output Current | In excess of 500 | mA |
| Line Regulation | 0.01 % (typical) | %/V |
| Load Regulation | 0.1 % (typical) | % |
| Thermal Shutdown | 180 °C | °C |
| Ripple Rejection | 66 dB (without CAdj), 80 dB (with CAdj = 10 μF) | dB |
| Operating Temperature Range | 0°C to 125°C (LM317MA), -40°C to 125°C (LM317MAB, NCV317MAB) | °C |
| Package Types | TO-220, DPAK | - |
Key Features
- Adjustable output voltage range of 1.2 V to 37 V
- Output current in excess of 500 mA
- Internal current limiting and thermal shutdown protection
- Safe area compensation for output transistor
- Floating operation for high voltage applications
- Easy to use with only two external resistors required to set the output voltage
- Can be used as a programmable output regulator or precision current regulator
Applications
The LM317MADTRKG is suitable for a wide variety of applications, including:
- Local, on-card regulation
- Adjustable switching regulators
- Programmable output regulators
- Precision current regulators
- Industrial and power management applications
Q & A
- What is the output voltage range of the LM317MADTRKG?
The output voltage range is 1.2 V to 37 V.
- What is the maximum output current of the LM317MADTRKG?
The maximum output current is in excess of 500 mA.
- What types of protection does the LM317MADTRKG have?
The LM317MADTRKG has internal current limiting, thermal shutdown, and safe area compensation.
- How is the output voltage set on the LM317MADTRKG?
The output voltage is set using only two external resistors.
- What are some common applications of the LM317MADTRKG?
Common applications include local, on-card regulation, adjustable switching regulators, programmable output regulators, and precision current regulators.
- What package types are available for the LM317MADTRKG?
The LM317MADTRKG is available in TO-220 and DPAK packages.
- What is the operating temperature range of the LM317MADTRKG?
The operating temperature range is 0°C to 125°C for LM317MA and -40°C to 125°C for LM317MAB and NCV317MAB.
- Does the LM317MADTRKG have ripple rejection capabilities?
Yes, it has a ripple rejection of 66 dB without CAdj and 80 dB with CAdj = 10 μF.
- Can the LM317MADTRKG be used in high voltage applications?
Yes, it supports floating operation for high voltage applications.
- What is the significance of the minimum load current requirement for the LM317MADTRKG?
The minimum load current is required to maintain regulation; if the load current is less than this minimum, the output voltage will rise.
