LM317AMDTX/NOPB

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The LM317AMDTX/NOPB is an advanced linear voltage regulator with an adjustable output from 1.2 to 37V with up to 1.5A output current. The regulator can accept a wide input voltage range from 10V to 40V, and has built-in protection features like overtemperature, overvoltage, undervoltage, overcurrent, and reverse current. The LM317AMDTX/NOPB is available in a 5-lead TO-220 and is ideal for various general-purpose, fixed and variable linear output voltage applications.

Application Field

The LM317AMDTX/NOPB regulated voltage has many applications in a wide variety of end-markets. Telecommunications, computing, industrial, automotive, and consumer electronics are some of the major industries in which the regulator can be utilized. It can be used in linear power supplies, used in adjustable voltage regulator circuits, adjustable current regulators, and electronic battery charges, as well as a wide variety of other applications. Thanks to its wide input range, adjustable output, and several protection features, the LM317AMDTX/NOPB offers a much needed advantage for circuit designers to deal with both high-voltage and low-noise applications.

Working Principle

LM317AMDTX/NOPB operates using a controlling principle that is based on classic linear regulator methods. The output voltage is regulated by using a reference voltage and comparing it with a voltage divider set to the desired output voltage. The voltage divider is created using two external resistors and a bypass capacitor. The current sense voltage is constantly monitored and the error amplifier tries to equalize both voltages. This results in an output voltage that is constant and regulated.

The adjustable output voltage of the LM317AMDTX/NOPB can be set by two resistors. The formula used can give an output voltage of: Vout = 1.25V*(1+R2/R1) . Utilizing this adjustable output allows the designer to produce different voltages from a wide range of values from 1.2-37V. The LM317AMDTX/NOPB also features dual basic protection features to protect the regulator from overvoltage, undervoltage, overcurrent, reverse current, and overtemperature.

The LM317AMDTX/NOPB reduces manufacturing complexity and offers many advantages to circuit designers. Its wide input voltage range of 10-40V and adjustable output of 1.2-37V with 1.5A output current makes it attractive in many linear regulator applications. Its small package size, low voltage drop, low noise, and superior transient response are also beneficial, making the LM317AMDTX/NOPB an ideal low dropout regulator for many applications.

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