LM317MDT

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LM317MDT

IC REG LINEAR POS ADJ 500MA DPAK

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規格

Package Tube
ProductStatus Obsolete
OutputConfiguration Positive
OutputType Adjustable
NumberofRegulators 1
Voltage-Input(Max) 40V
Voltage-Output(Min/Fixed) 1.2V
Voltage-Output(Max) 37V
Current-Output 500mA
PSRR 80dB ~ 65dB (120Hz)
ProtectionFeatures Over Current, Over Temperature, Short Circuit
OperatingTemperature 0°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case TO-252-3, DPak (2 Leads + Tab), SC-63

概述

Description

The LM317MDT is a versatile, adjustable three-terminal voltage regulator designed to provide a stable output voltage ranging from 1.25V to 37V. It is widely used in electronic circuits for its ability to handle output currents up to 1.5A. The device offers excellent line and load regulation, making it suitable for a variety of applications, including power supplies, battery chargers, and embedded systems.
One of the key features of the LM317MDT is its ease of use. The output voltage is set using two external resistors, allowing for a wide range of voltage customization. It also includes built-in current limiting, thermal overload protection, and safe area protection, enhancing device reliability and safety.
The LM317MDT comes in a TO-252 package, which is a surface-mount package suitable for applications requiring efficient thermal performance and compact size. Its robust design and reliability make it a popular choice among engineers and hobbyists for creating efficient and cost-effective power management solutions.

Features

The LM317MDT is a versatile, adjustable three-terminal voltage regulator designed for a wide range of applications. Key features include:
1. Adjustable Output Voltage: It can provide an output voltage range from 1.25V to 37V, with the ability to adjust through external resistors.
2. Output Current: Capable of delivering over 1.5A of output current.
3. Line Regulation: Offers excellent line regulation typically around 0.01% per volt.
4. Load Regulation: Provides load regulation typically at 0.1%, ensuring stable output under varying load conditions.
5. Thermal Overload Protection: Includes built-in protection against overheating, enhancing reliability.
6. Short-Circuit Protection: Offers current limiting to prevent damage from short circuits.
7. Safe Operating Area Protection: Maintains operation within safe limits to prevent damage under various conditions.
8. Package Options: Available in several package types, including TO-220 and D²PAK, suitable for various design configurations.
These features make the LM317MDT a robust choice for applications requiring a stable and adjustable voltage supply, such as power management in electronic devices and systems.

Package

The LM317MDT is a voltage regulator typically offered in a DPAK (TO-252) surface-mount package. This package type is suitable for applications requiring moderate power dissipation and limited board space.

Pinout

The LM317MDT is a popular adjustable voltage regulator. It typically comes in a TO-252 package and has three pins with the following functions:
1. Input (Pin 1): This pin receives the input voltage, which should be at least 3 volts higher than the desired output voltage.
2. Output (Pin 2): This pin provides the regulated output voltage. The output voltage can be adjusted between 1.25V to 37V by using an external resistor divider.
3. Adjust (Pin 3): This pin is used to adjust the output voltage. Connecting a resistor between this pin and the output pin, and another resistor between this pin and ground, sets the desired output voltage.
The LM317MDT can deliver an output current of up to 500 mA with proper heat sinking. It is widely used for its versatility, ease of use, and ability to provide a stable and adjustable output voltage for a wide range of applications.

Manufacturer

The LM317MDT is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a broad range of products, including discrete and integrated circuits that are used in a variety of microelectronics applications. These applications span across different sectors such as automotive, industrial, personal electronics, communications equipment, and more. As a leading player in the semiconductor industry, STMicroelectronics leverages its robust R&D capabilities and global presence to serve a diverse client base with innovative solutions.

Application

The LM317MDT is a versatile adjustable voltage regulator used in various applications. Key areas include power supply designs for electronic devices, battery chargers, and LED drivers. It is employed in DIY electronics projects, lab equipment, and communication devices due to its ability to provide a stable output voltage with a wide range of input voltages. It is also used in automotive and industrial applications for voltage regulation and current limiting. Its reliability and ease of use make it a popular choice for both hobbyists and professional engineers.

Equivalent

Equivalent products to the LM317MDT voltage regulator include the L78xx series (such as L7805 for 5V output), LM1117, LD1117, and NCP1117. These are adjustable or fixed output voltage regulators and can serve similar functions in providing stable voltage regulation in electronic circuits. Always check specific datasheets for compatibility in terms of voltage range, current output, and package type.

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