LM317MT

1.2V to 37V Output Range
5,637 Effective Inventory

LM317MT

Effective Inventory5,637

1.2V to 37V Output Range

  • Manufacturer Part # : LM317MT

  • Package/Case: TO220-3

  • Part Status : Discontinued

  • Brand: Onsemi

  • Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

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Certification

We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.

Shipping & Payment

Shipping & Payment

About Shipping

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Service & Packaging

Service & Packaging

About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

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Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.

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LM317MT DataSheet

Pricing (USD)

Quantity Unit Price Ext. Price
1 $0.367 $0.37
200 $0.142 $28.40
500 $0.137 $68.50
1000 $0.135 $135.00

These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.

Rapid Quote

Please submit RFQ for LM317MT or email to us: Email: [email protected], we will contact you in 12 hours.

Details

To ensure proper operation, the LM317MT requires an input voltage that is at least 3V higher than the desired output voltage. Additionally, external resistors are needed to set the output voltage, allowing for flexibility in configuring the IC for adjustable or fixed voltage applications

Key Features

  • Output Current in Excess of 0.5A
  • Output Adjustable Between 1.2V and 37V
  • Internal Thermal Overload Protection
  • Internal Short Circuit Current Limiting
  • Output Transistor Safe Area Compensation
  • Floating Operation for High Voltage Applications

Specifications

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

Product Category ! Linear Voltage Regulators RoHS Details
Mounting Style Through Hole Package / Case TO-220-3
Number of Outputs 1 Output Polarity Positive
Output Voltage 1.2 V to 37 V Output Current ! 500 mA
Output Type Adjustable Input Voltage, Min 4.2 V
Input Voltage, Max 40 V Minimum Operating Temperature 0 C
Maximum Operating Temperature ! + 125 C Load Regulation ! 0.5 %/V
Line Regulation ! 0.04 %/V Series LM317M
Brand onsemi / Fairchild Height 9.4 mm (Max)
Length 10.67 mm (Max) Pd - Power Dissipation 20 W
Product Type ! Linear Voltage Regulators PSRR / Ripple Rejection - Typ 65 dB
Factory Pack Quantity 50 Subcategory PMIC - Power Management ICs
Width 4.83 mm (Max) Unit Weight 0.042823 oz

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification LM317MT PDF Download

FAQs

What is LM317MT?

The LM317MT is a three-terminal adjustable positive voltage regulator integrated circuit designed by Texas Instruments. It is capable of providing a wide range of output voltages and currents, making it suitable for various power supply applications including adjustable linear regulation, current limiting, and thermal shutdown protection.

How Does LM317MT Work?

The LM317MT operates as a linear voltage regulator, providing a stable and adjustable output voltage based on the reference voltage and a resistor divider network connected to its adjustment pin. It regulates the output voltage by continuously adjusting the internal pass transistor to maintain a constant output voltage, even with varying input voltages and load conditions.

How Many Pins does LM317MT have and What are the Functions of the Pinout Configuration?

The LM317MT is housed in a 3-lead TO-220 package. The pinout configuration includes:

  • Input: The input pin for the regulated voltage supply.
  • Output: The regulated output voltage pin.
  • Adjust: The adjustment pin for setting the output voltage using an external resistor divider network.

What are the Pros and Cons of LM317MT?

Pros:

  • Adjustable Output: Allows flexibility in setting the desired output voltage.
  • Overload Protection: Incorporates thermal shutdown and current limiting features for added protection.
  • Widely Available: Widely used and available in various package types for different application needs.
  • Simple Design: Easy to use with minimal external components required for basic operation.
  • Low Cost: Provides a cost-effective solution for voltage regulation needs.

Cons:

  • Heat Dissipation: May require a heat sink for high power dissipation applications.
  • Dropout Voltage: Requires a minimum input-output voltage differential, affecting efficiency in low input voltage scenarios.
  • No On/Off Control: Lacks an enable pin for turning the regulator on and off.

Are There Any Equivalents/Alternatives to LM317MT for Recommendation?

  • The LM338 from Texas Instruments is a higher current version of the LM317 with similar adjustable voltage regulation features.
  • Alternatives to the LM317MT include the L78XX series from STMicroelectronics and the NCV78XX series from ON Semiconductor.

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