How do you regulate the current LM317?
The LM317 regulates by adjusting it’s output until it is 1.25 V higher than the voltage on the adjust pin. For a constant current supply we just need to add in a series resistor to drop 1.25 V at the required current.
What is the current rating of voltage regulator IC LM317?
The LM317T is a fully adjustable 3-terminal positive voltage regulator capable of supplying 1.5 amps with an output voltage ranging from around 1.25 volts to just over 30 volts.
Is LM317 a voltage regulator?
The LM317 is an adjustable 3−terminal positive voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of 1.2 V to 37 V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage.
How does LM317 voltage regulator work?
The LM317 device is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V. It requires only two external resistors to set the output voltage. The device features a typical line regulation of 0.01% and typical load regulation of 0.1%.
What is the maximum input voltage of LM317?
Description. The LM317 is an adjustable voltage linear regulator that can output 1.25 – 37V at up to 1.5A current with an input voltage range of 3 – 40V.
What is the dropout voltage of LM317?
When used as a voltage regulator, the LM317 will drop a minimum of 1.7v across itself (Vin-Vout >=1.7v); this is known as the “dropout voltage”.
What are the features of LM317?
Features
- Adjustable 3-terminal positive voltage regulator.
- Output voltage can be set to range from 1.25V to 37V.
- Output current is 1.5A.
- Maximum Input to output voltage difference is 40V, recommended 15V.
- Maximum output current when voltage difference is 15V is 2.2A.
- Operating junction temperature is 125°C.
What is the output current of LM317?
The LM317 is an adjustable voltage linear regulator that can output 1.25 – 37V at up to 1.5A current with an input voltage range of 3 – 40V.
What is the maximum input voltage for a LM317?
Texas Instruments’ LM317 device is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V. It requires only two external resistors to set the output-voltage. The device features a typical line regulation of 0.01% and typical load regulation of 0.1%.
How to build a LM317 adjustable voltage power supply?
Bridge Diode Rectifier,at least can handle 600 V and 2 A ( Digikey|Element14 )
How to connect a voltage regulator in a circuit?
Types of Voltage Regulator Circuit
How to make 3V DC regulator using LM317?
The output voltage is determined by rotating a selector switch S2 a level voltage 1.5,3,4.5,5,6,9 volts respectively.