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LM317MQDCYR +BOM

500-mA, 40-V, adjustable linear voltage regulator for automotive applications

LM317MQDCYR Information

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LM317MQDCYR

Description

The LM317MQDCYR is an adjustable linear regulator from Texas Instruments that offers a wide range of features for various applications. It's suitable for applications requiring stable output voltage and current regulation, such as adjustable power supplies, battery chargers, instrumentation, automotive electronics, and industrial control systems. Key benefits include safe-area compensation for reduced EMI emissions, fault detection and response capabilities, and thermal shutdown protection. The regulator also features programmable output voltages up to 37V, high input impedance, and low dropout voltage. Its pulse-width modulation (PWM) capability and variable gain amplifier make it suitable for applications requiring adjustments in output frequency or amplitude. Overall, the LM317MQDCYR is a reliable solution for a wide range of applications that require stable and adjustable voltage regulation.

Features

The LM317MQDCYR features include:

  • Safe-Area Compensation for reduced EMI emissions
  • Fault Detection and Response Capabilities
  • Persistent Fault Protection for continuous operation
  • Pulse-Width Modulation (PWM) Capability
  • Variable Gain Amplifier with Fast Recovery
  • Synchronous Rectification for improved efficiency
  • High Input Impedance for low bias currents
  • Programmable Output Voltages up to 37-V
  • Internal Oscillator for synchronizable operation
  • Adjustable Frequency up to 300-KHz
  • Low Dropout Voltage
  • Fast Transient Response Time
  • Soft-Start Feature for reduced in-rush current
  • High Common-Mode Rejection Ratio (CMRR)
  • Wide Range of Operating Temperature
  • Compliant with Automotive Reliability Standards
  • Output Current up to 1-Ampere
  • Thermal Shutdown Protection for device overload
  • Fault Tolerant Design for continuous operation

Package

The package type of LM317MQDCYR is SOT-223-4.

Pinout

The LM317MQDCYR has a pin count of 4, which follows the SOT-223-4 package. The pins are:

  • Pin 1: OUT (Output)
  • Pin 2: ADJ (Adjustment)
  • Pin 3: IN (Input)
  • Pin 4: GND (Ground)

The functions of these pins are: - OUT: Regulated output voltage - ADJ: Adjustable input voltage for setting the output voltage - IN: Input voltage to be regulated - GND: Ground reference

Manufacturer

The manufacturer of the LM317MQDCYR is Texas Instruments (TI). Texas Instruments is a leading semiconductor company that designs, manufactures, tests, and sells analog and embedded processing chips. The company was founded in 1930 and is headquartered in Dallas, Texas. TI is a global leader in the development and manufacturing of semiconductors, with a wide range of products used in various industries such as automotive, industrial, medical, and consumer electronics.

Applications

According to the product information, the LM317MQDCYR can be used in various applications such as:

  • Adjustable power supplies
  • Battery chargers
  • Instrumentation
  • Automotive electronics
  • Industrial control systems

It is particularly suitable for applications requiring stable output voltage and current regulation.

Equivalent

The equivalent products of LM317MQDCYR are:

  • LM317ADJ
  • LM317AHV
  • LM317L-3.0
  • LM337 (for negative voltage regulation)

These products offer similar adjustable linear regulator functionality as the LM317MQDCYR, but may have different package types or operating characteristics.

LM317MQDCYR

Specifications

Output options Adjustable Output Iout (max) (A) 0.5
Vin (max) (V) 40 Vin (min) (V) 3
Vout (max) (V) 37 Vout (min) (V) 1.2
Noise (µVrms) 38 Iq (typ) (mA) 3.5
Thermal resistance θJA (°C/W) 60 Rating Automotive
Load capacitance (min) (µF) 0 Regulated outputs (#) 1
Accuracy (%) 2 PSRR at 100 KHz (dB) 22
Dropout voltage (Vdo) (typ) (mV) 2000 Operating temperature range (°C) -40 to 125
Package/Case SOT223

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Ratings and Reviews

More
S
S**. 04/27/2023

Pleasure dealing with Good communications and prompt payment.Looking forward to repeat business.Darren

15
J
J**b 08/06/2022

Thank you!!! Excellent!!! Prompt!!!

16
I
I**h 11/04/2021

part received as per order

19
E
E**a 08/23/2020

Checked, work, recommend

10

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