How does LM317 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 then the LM317 IC is all about?

The LM317T is an adjustable 3-terminal positive voltage regulator capable of supplying different DC voltage outputs other than the fixed voltage power supply of +5 or +12 volts, or as a variable output voltage from a few volts up to some maximum value all with currents of about 1.5 amperes.

What type of transistor is LM317?

Zigshash LM317 IC Adjustable Voltage Regulator FET Transistor (Number of Transistors 4)

Why LM317 is called so?

It is also called a temperature-independent reference voltage frequently used in integrated circuits. An error term is added because some quiescent current flows from the adjustment pin of the device. Hence, this LM317 circuit can be treated as LM317 Current Regulator Circuit.

What is the range of output voltage of regulator IC LM317?

1.25 V to 37 V.
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.

How do you calculate the output voltage of LM317?

The LM317 needs two external resistors — R1 and R2 — to adjust the output voltage. The output voltage depends on the values of R1 and R2. LM317 is an adjustable voltage regulator that takes an input voltage of 3 – 40V DC and provides a fixed output voltage of 1.25V to 37V DC.

Can LM317 boost voltage?

The LM317 is a buck converter or a step-down regulator and is not suitable as a boost converter.

What does LM mean in electronics?

linear monolithic
The LM series originated with integrated circuits made by National Semiconductor. The prefix LM stands for linear monolithic, referring to the analog components integrated onto a single piece of silicon.

Is a LM317 voltage regulator passive?

The circuit consists of a low-side resistor and high-side resistor connected in series forming a resistive voltage divider which is a passive linear circuit used to produce an output voltage which is a fraction of its input voltage. …

What is the current rating of voltage regulator IC LM 317l?

The LM317L is an adjustable 3−terminal positive voltage regulator capable of supplying in excess of 100 mA over an output voltage range of 1.2 V to 37 V.

How is the LM 317 circuit analysis done?

LM 317 circuit analysis by measuring the input & output voltage using a multimeter. I have explained all the features of the LM317 variable voltage regulator with practical experiments, like an LED dimmer, motor speed controller, etc. Before designing the PCB, I have made the circuit on the breadboard for testing.

What kind of voltage does a LM317 voltage regulator supply?

LM317 Voltage Regulator. The LM317 Voltage Regulator is a 3-terminal adjustable voltage regulator which can supply an output voltage adjustable from 1.2V to 37V. It can supply more than 1.5A of load current to a load. LM317 Pinout. LM317 Schematic Diagram. LM317 Circuit.

How much DC do I need for the LM317 IC?

To get the maximum 12volt DC at the output, I need to supply 15volt DC at the input of the LM317 IC. The output voltage can be adjusted by the potentiometer. Now, before working with the LM317 voltage regulator, we should know the pros & corns of the LM317. LM 317 circuit analysis by measuring the input & output voltage using a multimeter.

What is the configuration of the LM317 pinout?

LM317 Pinout Diagram 1 LM317L 2 LM317T 3 LM317K 4 Pin Configuration Description. It is 3 terminal device used for linear regulation of the output. Pin1 is an adjustable pin which is used to adjust the output voltage.