Linear Technology/Analog Devices
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LT1085IT-12#PBF
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LT1085IT-12#PBF

Product Overview

Category

The LT1085IT-12#PBF belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

  • High precision voltage regulation
  • Low dropout voltage
  • Adjustable output voltage
  • Current limiting and thermal shutdown protection

Package

The LT1085IT-12#PBF comes in a TO-220 package.

Essence

This voltage regulator is designed to provide stable and regulated output voltage for various electronic applications.

Packaging/Quantity

The LT1085IT-12#PBF is typically packaged in reels or tubes, with a quantity of 1000 units per reel/tube.

Specifications

  • Input Voltage Range: 3.6V to 20V
  • Output Voltage Range: 1.25V to 12V
  • Dropout Voltage: 1.2V (typical)
  • Maximum Output Current: 3A
  • Line Regulation: 0.015% (typical)
  • Load Regulation: 0.1% (typical)
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT1085IT-12#PBF has three pins:

  1. Vin (Pin 1): Input voltage pin
  2. Vout (Pin 2): Output voltage pin
  3. GND (Pin 3): Ground pin

Functional Features

  • High Precision: The LT1085IT-12#PBF provides precise voltage regulation, ensuring stable output voltage even under varying load conditions.
  • Low Dropout Voltage: With a low dropout voltage of 1.2V, this regulator can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
  • Adjustable Output Voltage: The output voltage can be adjusted within the range of 1.25V to 12V, allowing flexibility in various applications.
  • Current Limiting and Thermal Shutdown Protection: The LT1085IT-12#PBF incorporates current limiting and thermal shutdown protection mechanisms to prevent damage due to excessive current or temperature.

Advantages and Disadvantages

Advantages

  • High precision voltage regulation ensures stable output voltage.
  • Low dropout voltage allows for efficient power conversion.
  • Adjustable output voltage provides flexibility in different applications.
  • Current limiting and thermal shutdown protection enhance reliability.

Disadvantages

  • Relatively high cost compared to other voltage regulators with similar specifications.
  • Requires additional external components for proper operation.

Working Principles

The LT1085IT-12#PBF operates based on a linear voltage regulation principle. It uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a constant output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

The LT1085IT-12#PBF finds applications in various electronic systems that require stable and regulated voltage supply. Some common application fields include:

  1. Power supplies for microcontrollers and digital circuits
  2. Battery charging circuits
  3. Audio amplifiers
  4. Industrial control systems
  5. Automotive electronics

Detailed and Complete Alternative Models

  1. LM317: A popular adjustable voltage regulator with similar characteristics and pin configuration.
  2. LT1084: A lower dropout voltage version of LT1085IT-12#PBF.
  3. LM7805: A fixed-output voltage regulator with a 5V output.

These alternative models offer similar functionality and can be considered as substitutes depending on specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LT1085IT-12#PBF v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LT1085IT-12#PBF in technical solutions:

  1. Q: What is the LT1085IT-12#PBF? A: The LT1085IT-12#PBF is a high-performance, adjustable linear voltage regulator capable of providing up to 3A of output current.

  2. Q: What is the input voltage range for the LT1085IT-12#PBF? A: The input voltage range for the LT1085IT-12#PBF is typically between 3.6V and 20V.

  3. Q: What is the output voltage range for the LT1085IT-12#PBF? A: The LT1085IT-12#PBF can provide an adjustable output voltage range from 1.25V to 12V.

  4. Q: How much output current can the LT1085IT-12#PBF handle? A: The LT1085IT-12#PBF can handle up to 3A of output current.

  5. Q: Is the LT1085IT-12#PBF suitable for both low-dropout (LDO) and high-dropout (HDO) applications? A: Yes, the LT1085IT-12#PBF is suitable for both LDO and HDO applications due to its low dropout voltage characteristics.

  6. Q: Can the LT1085IT-12#PBF be used in battery-powered applications? A: Yes, the LT1085IT-12#PBF can be used in battery-powered applications as it has low quiescent current and low dropout voltage.

  7. Q: Does the LT1085IT-12#PBF require any external components for operation? A: Yes, the LT1085IT-12#PBF requires a few external components such as input and output capacitors for stability.

  8. Q: What is the thermal resistance of the LT1085IT-12#PBF? A: The thermal resistance of the LT1085IT-12#PBF is typically around 5°C/W, which helps in dissipating heat efficiently.

  9. Q: Can the LT1085IT-12#PBF handle overcurrent or overtemperature conditions? A: Yes, the LT1085IT-12#PBF has built-in protection features to handle overcurrent and overtemperature conditions, ensuring safe operation.

  10. Q: Is the LT1085IT-12#PBF available in different package options? A: Yes, the LT1085IT-12#PBF is available in various package options, including TO-220 and DDPAK, providing flexibility for different applications.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements.