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LDO Regulator Pos 1.25V to 28.5V 5A 3-Pin(3+Tab) TO-220


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  • Part Number : LT1084CT

  • Package/Case : TO220-3

  • Brands : ADI

  • Components Categories : Voltage Regulators & Voltage ControllersLDO Voltage Regulators

  • Datesheet : LT1084CT DataSheet (PDF)

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Overview of LT1084CT

The LT1084CT is a high-performance linear voltage regulator designed to provide stable and adjustable output voltage in electronic systems. This regulator is part of the LT1084 series, known for its low dropout voltage, low noise, and excellent line and load regulation. The LT1084CT is a versatile component suitable for applications demanding precise voltage regulation.


Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.

  • ADJ (Pin 1): Adjustable output voltage pin.
  • OUT (Pin 2): Regulated output voltage.
  • IN (Pin 3): Input voltage supply.

Circuit Diagram

Incorporate a circuit diagram that illustrates the connections and operation of the LT1084CT linear voltage regulator for a more visual representation.

The circuit diagram above depicts a typical application of the LT1084CT linear voltage regulator. External components, such as capacitors, are connected to ensure stable and regulated power output.

Key Features

  • Linear Voltage Regulator: The LT1084CT operates as a linear voltage regulator, efficiently reducing the input voltage to provide a stable and adjustable output voltage.
  • Low Dropout Voltage: With low dropout voltage characteristics, this regulator is ideal for applications where the input voltage is close to the desired output voltage.
  • Low Output Noise: The LT1084CT features low output noise, making it suitable for applications sensitive to electrical interference.
  • Adjustable Output: The device allows users to adjust the output voltage, providing flexibility for different system requirements.

Note: For detailed technical specifications, please refer to the LT1084CT datasheet.


  • Power Supplies: Ideal for generating regulated power supplies in various electronic systems.
  • Audio Amplifiers: Suitable for audio amplifiers where low output noise is crucial for high-quality audio signals.
  • Instrumentation: Applied in instrumentation systems requiring stable and adjustable voltage sources.
  • Battery Charging: Used in battery charging circuits to regulate the charging voltage.


The LT1084CT efficiently regulates the input voltage to provide a stable and adjustable output voltage. Its low dropout voltage and low output noise make it suitable for applications where precise voltage regulation is essential.

Usage Guide

  • Input Power Connection: Connect the IN pin (Pin 3) to the input power source.
  • Output Connection: Connect the OUT pin (Pin 2) to the load requiring regulated power.
  • Adjustment: Use the ADJ pin (Pin 1) to adjust the output voltage according to the desired level.


For similar functionalities, consider these alternatives to the LT1084CT:

LM317: A classic linear voltage regulator with adjustable output voltage.
LM350: Another linear regulator option with similar features and performance.
LT1083: A variant in the LT108x series offering comparable voltage regulation.

Frequently Asked Questions

Q: What is the maximum dropout voltage of the LT1084CT?
A: Refer to the datasheet for specific details on the maximum dropout voltage under recommended operating conditions.

Q: Can the LT1084CT be used in battery-powered applications?
A: Yes, the LT1084CT is suitable for battery-powered applications due to its low dropout voltage characteristics.


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

Source Content uid LT1084CT Rohs Code No
Part Life Cycle Code Transferred Ihs Manufacturer LINEAR TECHNOLOGY CORP
Part Package Code TO-220 Package Description PLASTIC, TO-220, 3 PIN
Pin Count 3 Manufacturer Package Code T
Reach Compliance Code not_compliant ECCN Code EAR99
HTS Code 8542.39.00.01 Adjustability ADJUSTABLE
Dropout Voltage1-Max 1.5 V Dropout Voltage1-Nom 1.3 V
Input-Output Voltage Differential-Max 25 V Input-Output Voltage Differential-Min 1.5 V
JESD-30 Code R-PSFM-T3 JESD-609 Code e0
Line Regulation-Max (%/V) 0.033 Load Regulation-Max(%) 0.4%
Number of Functions 1 Number of Outputs 1
Number of Terminals 3 Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min Output Current1-Max 5 A
Output Voltage1-Max 15 V Output Voltage1-Min 1.2 V
Package Body Material PLASTIC/EPOXY Package Code TO-220
Package Equivalence Code SIP3,.1TB Package Shape RECTANGULAR
Package Style FLANGE MOUNT Qualification Status Not Qualified
Technology BIPOLAR Terminal Finish TIN LEAD OVER NICKEL
Terminal Form THROUGH-HOLE Terminal Pitch 2.54 mm
Terminal Position SINGLE

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