LM317AMDTX

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Standard Regulator Pos 1.2V to 37V 1.5A 3-Pin(2+Tab) TO-252 T/R

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LM317AMDTX DataSheet

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LM317AMDTX Description

The LM317AMDTX is an adjustable voltage regulator from Texas Instruments, designed for reliable power management in various applications. This device features thermal overload protection, short circuit protection, and internal thermal shutdown, making it suitable for use in a wide range of systems.

Features

  • Adjustable Voltage Regulator: Offers an adjustable output voltage range from 1.25V to 37V.
  • Thermal Overload Protection: Provides thermal overload protection to prevent damage from overheating.
  • Short Circuit Protection: Ensures safe operation by preventing short circuits and protecting against damage.
  • Internal Thermal Shutdown: Automatically shuts down the device in case of excessive temperature rise, ensuring reliable operation.
  • Adjustable Current Limiting: Allows for adjustable current limiting to prevent overheating or damage from excessive current draw.

Applications

The LM317AMDTX is commonly used in power supplies, battery chargers, voltage regulators, DC motor speed controllers, lab equipment, audio amplifiers, LED drivers, temperature controllers, and solar panel regulators.

Where to Use:

  • Power supplies
  • Battery chargers
  • Voltage regulators
  • DC motor speed controllers
  • Lab equipment
  • Audio amplifiers
  • LED drivers
  • Temperature controllers
  • Solar panel regulators

Manufacturer

The LM317AMDTX is manufactured by Texas Instruments (TI), a global leader in semiconductor technology. It falls under the category of linear voltage regulators, which are designed to provide stable and reliable power management.

This product was developed to meet the growing demand for efficient and reliable power management solutions in various industries, including consumer electronics, automotive, and industrial applications.

Packages

The LM317AMDTX comes in a TO-220 package. This package is designed for through-hole mounting and offers a compact and efficient solution for integrating the regulator into electronic circuits.

FAQ

Q: What is the operating temperature range of the LM317AMDTX?
A: It operates within a wide temperature range of -40°C to +125°C, allowing it to function reliably in various environmental conditions.

Q: How does the LM317AMDTX handle thermal overload protection?
A: It provides thermal overload protection by automatically shutting down the device in case of excessive temperature rise, ensuring reliable operation and preventing damage from overheating.

Q: Can the LM317AMDTX be used in automotive applications?
A: Yes, it is designed to be used in automotive applications. It provides high reliability and robust performance, making it suitable for use in demanding environments found in the automotive industry.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Pbfree Code Yes Rohs Code No
Part Life Cycle Code Not Recommended Part Package Code TO-252
Pin Count ! 3 Reach Compliance Code not_compliant
ECCN Code EAR99 HTS Code ! 8542.39.00.01
Adjustability ADJUSTABLE Dropout Voltage1-Nom 2.25 V
Input Voltage-Max 40 V Input Voltage-Min 3 V
Input-Output Voltage Differential-Max 40 V Input-Output Voltage Differential-Min 3 V
JESD-30 Code R-PSSO-G2 JESD-609 Code e0
Length 6.58 mm Line Regulation-Max (%/V) 0.02
Load Regulation-Max(%) 1% Moisture Sensitivity Level 1
Number of Functions 1 Number of Outputs 1
Number of Terminals 2 Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min -40 °C Operating Temperature-Max 125 °C
Operating Temperature-Min -40 °C Output Current1-Max 1.5 A
Output Voltage1-Max 37 V Output Voltage1-Min 1.2 V
Package Body Material PLASTIC/EPOXY Package Code TO-252
Package Equivalence Code SMSIP3H,.38,90TB Package Shape RECTANGULAR
Package Style SMALL OUTLINE Packing Method TR
Peak Reflow Temperature (Cel) 235 Qualification Status ! Not Qualified
Regulator Type ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR Seated Height-Max 2.38 mm
Surface Mount ! YES Technology BIPOLAR
Terminal Finish Tin/Lead (Sn/Pb) Terminal Form ! GULL WING
Terminal Pitch ! 2.285 mm Terminal Position SINGLE
Time@Peak Reflow Temperature-Max (s) NOT SPECIFIED Voltage Tolerance-Max 5%
Width 6.1 mm

FAQs

What is LM317AMDTX?

The LM317AMDTX is an adjustable precision voltage regulator integrated circuit manufactured by Texas Instruments. It is used in various electronic applications to provide a stable and adjustable output voltage.

How Does LM317AMDTX Work?

The LM317AMDTX operates by regulating the output voltage based on a reference voltage and feedback mechanism. By adjusting the resistor values connected to the adjust pin, the output voltage can be set to the desired level. The IC maintains a constant output voltage even with changes in input voltage and load conditions.

How Many Pins does LM317AMDTX have and What are the Functions of the Pinout Configuration?

The LM317AMDTX comes in a TO-252-3 package, which contains three pins:

  • Input (Vin): The input voltage is supplied through this pin.
  • Output (Vout): The regulated output voltage is provided through this pin.
  • Adjust (ADJ): Connects to external resistors to set the output voltage.

What are the Pros and Cons of LM317AMDTX?

Pros:

  • Adjustable Output: Allows users to set the output voltage as needed.
  • Stable Operation: Provides a stable output voltage even with variations in input and load.
  • Short Circuit Protection: Includes internal current limiting and thermal shutdown protection.
  • Widely Available: A popular and commonly used voltage regulator IC.

Cons:

  • Voltage Drop: Exhibits a voltage drop across the regulator, leading to power dissipation.
  • Heat Generation: May require a heatsink for high-power applications due to heat dissipation.
  • No On/Off Control: Lacks an on/off control feature, requiring external circuitry for power control.

Are There Any Equivalents/Alternatives to LM317AMDTX for Recommendation?

  • Alternatives to the LM317AMDTX include the LM338, LM350, and LM1117 series of voltage regulators.
  • The LM2940, LM2941, and LM2937 are also alternatives that offer different features and performance characteristics.

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