Overview
The LM317MABDTG is an adjustable three-terminal positive voltage regulator produced by onsemi. This component is capable of supplying in excess of 500 mA 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 LM317MABDTG incorporates several protective features, including internal current limiting, thermal shutdown, and safe area compensation, making it highly reliable and resistant to potential damage under abnormal conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | 500 mA | - |
| Output Voltage Range | 1.2 V to 37 V | - |
| Input-Output Voltage Differential | 40 Vdc | - |
| Maximum Junction Temperature | +150 °C | - |
| Storage Temperature Range | −65 to +150 °C | - |
| Thermal Resistance (Junction-to-Air) | 70 to 245 °C/W (depending on package) | - |
| Minimum Load Current to Maintain Regulation | 5 mA | - |
| Maximum Output Current | 0.5 A (VI − VO ≤ 15 V, PD ≤ Pmax) | - |
| Ripple Rejection | 66 to 80 dB (depending on CAdj) | - |
| Thermal Shutdown | 180 °C | - |
Key Features
- Adjustable output voltage between 1.2 V and 37 V using two external resistors.
- Internal current limiting and thermal shutdown for enhanced reliability.
- Safe area compensation to prevent damage under abnormal conditions.
- Low dropout voltage and high ripple rejection.
- Can be used as a precision current regulator by connecting a fixed resistor between the adjustment and output terminals.
- Suitable for local, on-card regulation and as an adjustable switching regulator.
Applications
The LM317MABDTG is versatile and can be used in a variety of applications, including:
- Local, on-card regulation.
- Adjustable switching regulators.
- Precision current regulators.
- Programmable output regulators.
- Electronic shutdown regulators.
- Slow turn-on regulators.
Q & A
- What is the output current capability of the LM317MABDTG?
The LM317MABDTG can supply in excess of 500 mA. - What is the adjustable output voltage range of the LM317MABDTG?
The output voltage can be adjusted between 1.2 V and 37 V. - What protective features does the LM317MABDTG have?
The LM317MABDTG features internal current limiting, thermal shutdown, and safe area compensation. - How is the output voltage set for the LM317MABDTG?
The output voltage is set using two external resistors. - What is the maximum junction temperature for the LM317MABDTG?
The maximum junction temperature is +150 °C. - What is the storage temperature range for the LM317MABDTG?
The storage temperature range is −65 to +150 °C. - Can the LM317MABDTG be used as a precision current regulator?
Yes, it can be used as a precision current regulator by connecting a fixed resistor between the adjustment and output terminals. - What are some common applications of the LM317MABDTG?
Common applications include local, on-card regulation, adjustable switching regulators, and precision current regulators. - What is the ripple rejection of the LM317MABDTG?
The ripple rejection is between 66 to 80 dB, depending on the use of CAdj. - What is the thermal shutdown temperature of the LM317MABDTG?
The thermal shutdown temperature is 180 °C.
