Overview
The LM317MABDTRKG is an adjustable three-terminal positive voltage regulator produced by Onsemi. This device is part of the LM317 family and is known for its ease of use and robust features. The LM317MABDTRKG can supply over 500 mA of output current across a voltage range of 1.2 V to 37 V, making it versatile for various applications. It includes internal current limiting, thermal shutdown, and safe area compensation, ensuring reliable operation and protection against overloads.
Key Specifications
| Characteristic | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Output Current | A | - | - | 0.5 |
| Output Voltage Range | V | 1.2 | - | 37 |
| Input-to-Output Differential Voltage | V | - | - | 40 |
| Operating Junction Temperature | °C | -40 | - | 125 |
| Maximum Junction Temperature | °C | - | - | 150 |
| Line Regulation | %/V | 0.01 | 0.04 | - |
| Load Regulation | % VO | - | - | - |
| Ripple Rejection | dB | 66 | 65 | 80 |
| Thermal Shutdown | °C | - | - | 180 |
Key Features
- Adjustable Output Voltage: The LM317MABDTRKG allows for adjustable output voltage between 1.2 V and 37 V using only two external resistors.
- High Output Current: Capable of supplying over 500 mA of output current.
- Internal Protection: Features internal current limiting, thermal shutdown, and safe area compensation for reliable operation.
- Low Quiescent Current: Quiescent current flows to the load instead of being wasted, enhancing efficiency.
- Good Load Regulation: Provides excellent load regulation with proper circuit configuration.
- Versatile Applications: Can be used as a precision current regulator, adjustable switching regulator, or programmable output regulator.
Applications
- Local, On-Card Regulation: Suitable for local voltage regulation on circuit boards.
- Electronic Point-of-Sales Devices: Used in point-of-sale equipment for stable voltage supply.
- Medical/Health/Fitness Devices: Applied in medical and health-related devices requiring stable voltage regulation.
- Printers and Appliances: Used in various consumer electronics such as printers and white goods.
- TV/Set-Top Box: Employed in television and set-top box applications for reliable voltage regulation.
Q & A
- What is the output voltage range of the LM317MABDTRKG?
The output voltage range is adjustable between 1.2 V and 37 V.
- What is the maximum output current of the LM317MABDTRKG?
The maximum output current is over 500 mA.
- What kind of protection does the LM317MABDTRKG have?
The device includes internal current limiting, thermal shutdown, and safe area compensation.
- How do I set the output voltage of the LM317MABDTRKG?
The output voltage can be set using two external resistors connected between the adjustment and output terminals.
- What is the operating junction temperature range of the LM317MABDTRKG?
The operating junction temperature range is from -40°C to 125°C.
- Can the LM317MABDTRKG be used as a current regulator?
Yes, it can be used as a precision current regulator by connecting a fixed resistor between the adjustment and output terminals.
- What is the maximum input-to-output differential voltage for the LM317MABDTRKG?
The maximum input-to-output differential voltage is 40 V.
- Does the LM317MABDTRKG require external capacitors for operation?
Normally, no capacitors are needed unless the device is more than a few inches from the filter capacitor.
- What is the thermal shutdown temperature of the LM317MABDTRKG?
The thermal shutdown temperature is approximately 180°C.
- Can the LM317MABDTRKG be used in high-voltage applications?
Yes, it can be used in applications where the regulated output voltage is hundreds of volts, provided the input-to-output differential does not exceed 40 V.
