What is LM317 module?

The LM317 DC-DC Adjustable Voltage Regulator Power Supply Module is an adjustable 3-terminal positive voltage regulator. It is capable of delivering more than 1.5 Amp current over an output voltage range of 1.25 to 37 Volts. The LM317 requires only 2 resistors to set the output voltage.

Why is LM317 called adjustable IC?

Compared to 78xx/79xx The LM317 is an adjustable analogue to the popular 78xx fixed regulators. Like the LM317, each of the 78xx regulators is designed to adjust the output voltage until it is some fixed voltage above the adjustment pin (which in this case is labelled “ground”).

What is inside LM317?

The LM317 voltage regulator circuit internally consists of thermal overload protection and short circuit current limiting constant with temperature. It is available in two packages as 3-Lead Transistor Package and surface mount D2PAK-3. Stocking many fixed voltages can be eliminated.

What is the dropout voltage of LM317?

As has already been mentioned, the LM317 has a minimum 1.7v dropout voltage. 10.1 + 1.7 = 11.8v. As soon as your battery voltage drops below 11.8v, your LEDs will begin dimming. You can use an LM317L if you wish to save space.

What is the storage temperature range of the LM317?

Storage temperature range, Tstg –65°C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.

Why do we use LM317?

The LM317 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317 can be used as a precision current regulator.

What is the function of LM317T?

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.

How many amps is 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.