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National Semiconductor LM317L 3-Terminal Adjustable Regulator Datasheet
The LM317L is an adjustable 3-terminal positive voltage regulator capable of supplying 100mA over a 1.2V to 37V output range. It is designed to be exceptionally easy to use, requiring only two external resistors to set the output voltage. The device offers full overload protection, including current limit, thermal overload, and safe area protection, all of which remain functional even if the adjustment terminal is disconnected.
The regulator is available in three standard packages: TO-92, SO-8, and 6-Bump micro SMD. It operates over a temperature range of -25°C to 125°C and features a reference voltage of approximately 1.25V. The datasheet provides detailed electrical characteristics, typical performance characteristics graphs, and connection diagrams for various package types.
National Semiconductor LM317L specifications
| Output Current | 100 mA |
|---|---|
| Output Voltage Range | 1.2V to 37V |
| Operating Junction Temperature Range | -25°C to 125°C |
| Line Regulation | 0.01% (Typ) |
| Load Regulation | 0.1% (Typ) |
| Ripple Rejection Ratio | 80 dB |
| Input-Output Voltage Differential | 40V |
Source: National Semiconductor LM317L 3-Terminal Adjustable Regulator Datasheet
All National Semiconductor LM317L documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output current of the LM317L?
The LM317L is capable of supplying 100mA.
From: National Semiconductor LM317L 3-Terminal Adjustable Regulator Datasheet
Does the LM317L require external capacitors?
Normally, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors.
From: National Semiconductor LM317L 3-Terminal Adjustable Regulator Datasheet
What is the maximum output current of the LM317L?
The LM317L is guaranteed to deliver up to 100 mA of output current.
From: National Semiconductor LM317L 3-Terminal Adjustable Regulator Datasheet
What is the typical line regulation performance?
Typical line regulation is 0.01 %V.
From: National Semiconductor LM317L 3-Terminal Adjustable Regulator Datasheet