LM317DCYRG3

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The LM317DCYRG3 is an adjustable three-terminal linear voltage regulator, housed in a low-profile 4-pin surface mount package. It has been designed to provide a regulated voltage from 3 V to 20 V with output current capability of up to 1.5 A. It combines precision adjustment of the output voltage with thermal stability, reverse polarity protection, and wide operating temperature range.

The LM317DCYRG3 is a simple, easy-to-use voltage regulator which requires no external components. Its design greatly simplifies the process of deriving a precise output voltage, making it suitable for use in a variety of applications such as power supplies, converters, controllers, etc.

Application

The LM317DCYRG3 is mainly used in industries of automotive, consumer electronics, healthcare, digital communication, and industrial electronics. Its wide range of operation and low-profile surface mount package make it suitable for a variety of digital and analog systems.

As an adjustable voltage regulator, the LM317DCYRG3 can be used to provide a steady, regulated output from an unregulated or varying input voltage. This makes it ideal for level shifting, voltage scaling and voltage regulation for power sources with varying speeds or levels of power. It can also be used in the regulation of the charging of lithium-ion or other types of batteries.

In automotive applications, the LM317DCYRG3 is used for current regulation in onboard charging systems, as well as power up delay. It can also be used to provide voltage and current limiting for power control in heating, ventilation and air conditioning (HVAC) systems. It is also used to provide an adjustable output voltage for digital displays, as well as a regulated supply voltage to microcontrollers, embedded MCUs and sensors.

The LM317DCYRG3 can be used to regulate the output of audio amplifiers, providing an easily adjustable voltage source for the amplifier. The voltage regulator will ensure that the audio output levels remain steady regardless of input voltage variations.

The device is particularly well suited to power supply systems. It can be used to provide a regulated voltage to important system components, such as microprocessors and digital signal processors, as well as other components that need a controlled, stable power supply.

Working principle

The LM317DCYRG3 is a three-terminal adjustable voltage regulator with an internal pass element. The output voltage is established by two external resistors, R1 and R2. The output voltage is set to (1.2V * (1+ R2/R1)), with 0.01% accuracy and a temperature coefficient of 1.2mV/°C.

The LM317DCYRG3 features current limiting, thermal protection, and power limiting functions to provide protection from overload or excessive current draw. The current limit is adjustable through an internal resistor and diode pair. The device also has an overload protection circuit that will shut off the output voltage if the load current exceeds 2 A.

The LM317DCYRG3 is an ideal choice for a wide range of voltage regulation applications, thanks to its low profile surface mount package, simple operation and exact voltage regulation. Its low quiescent current and low dropout voltage ensure that the device runs at an optimal efficiency, and its wide operating temperature range make it suitable for a variety of applications.

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