Overview
The LM317MBT is an adjustable three-terminal positive linear 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 LM317MBT features internal current limiting, thermal shutdown, and safe area compensation, making it essentially blow-out proof. This regulator is versatile and can be used in various applications, including local on-card regulation, adjustable switching regulators, programmable output regulators, and precision current regulators.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Output Voltage Range | 1.2 | - | 37 | V |
| Output Current | - | - | 1.5 | A |
| Line Regulation | 0.01 | 0.04 | 0.07 | %/V |
| Load Regulation (VO ≤ 5 V) | 5 | 25 | 70 | mV |
| Load Regulation (VO ≥ 5 V) | 0.1 | 0.5 | 1.5 | % |
| Adjustment Pin Current | 50 | 100 | - | µA |
| Reference Voltage | 1.2 | 1.25 | 1.3 | V |
| Thermal Shutdown | - | - | 180 | °C |
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
- Pb-Free, Halogen Free/BFR Free and RoHS Compliant
- NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC-Q100 Qualified and PPAP Capable
Applications
- Local, on-card regulation
- Adjustable switching regulators
- Programmable output regulators
- Precision current regulators
- White Goods and Appliances
- Desktop PCs
- Energy Harvesting
- Telematics and Infotainment
- Consumer Products
- Automotive
Q & A
- What is the output voltage range of the LM317MBT?
The output voltage range of the LM317MBT is 1.2 V to 37 V.
- What is the maximum output current of the LM317MBT?
The maximum output current of the LM317MBT is in excess of 1.5 A.
- Does the LM317MBT require external capacitors for stability?
No, the LM317MBT does not require external capacitors for stability, although a capacitor can improve transient response.
- What types of protection does the LM317MBT have?
The LM317MBT has internal thermal overload protection, short circuit current limiting, and safe area compensation.
- In what packages is the LM317MBT available?
The LM317MBT is available in surface mount D2PAK-3 and standard 3-lead transistor packages.
- Is the LM317MBT RoHS compliant?
- Can the LM317MBT be used in automotive applications?
- How do you set the output voltage of the LM317MBT?
The output voltage of the LM317MBT is set using two external resistors.
- Can the LM317MBT be used as a precision current regulator?
- What are some common applications of the LM317MBT?
