STMicroelectronics
Afbeelding kan een representatie zijn.
Zie specificaties voor productdetails.
LD1085D2T-R
Details bekijken DataSheets

LD1085D2T-R

Product Overview

Category

LD1085D2T-R belongs to the category of voltage regulators.

Use

It is commonly used to regulate and stabilize voltage in electronic circuits.

Characteristics

  • LD1085D2T-R is a low-dropout (LDO) voltage regulator.
  • It has a high output voltage accuracy.
  • The device operates with low quiescent current.
  • LD1085D2T-R offers excellent line and load regulation.
  • It provides thermal shutdown and current limit protection.

Package

The LD1085D2T-R comes in a TO-220 package, which is a widely used through-hole package for power devices.

Essence

The essence of LD1085D2T-R lies in its ability to provide a stable and regulated output voltage despite variations in input voltage and load conditions.

Packaging/Quantity

LD1085D2T-R is typically available in reels or tubes, with quantities varying depending on the manufacturer and distributor.

Specifications

  • Input Voltage Range: 4.75V to 20V
  • Output Voltage Range: 1.25V to 18V
  • Output Current: Up to 3A
  • Dropout Voltage: 1.3V (typical)
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Quiescent Current: 5mA (typical)

Detailed Pin Configuration

The LD1085D2T-R has three pins:

  1. Input (VIN): This pin is connected to the input voltage source.
  2. Output (VOUT): This pin provides the regulated output voltage.
  3. Ground (GND): This pin is connected to the ground reference.

Functional Features

  • High output voltage accuracy ensures precise voltage regulation.
  • Low quiescent current minimizes power consumption.
  • Excellent line and load regulation maintain stable output voltage under varying conditions.
  • Thermal shutdown protection prevents the device from overheating.
  • Current limit protection safeguards against excessive current flow.

Advantages and Disadvantages

Advantages

  • High output voltage accuracy
  • Low quiescent current
  • Excellent line and load regulation
  • Thermal shutdown and current limit protection

Disadvantages

  • Dropout voltage of 1.3V may limit its use in low voltage applications.

Working Principles

The LD1085D2T-R operates based on the principle of a linear voltage regulator. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The device compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

LD1085D2T-R finds applications in various electronic systems, including:

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

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LD1085D2T-R include:

  1. LM317: A popular adjustable voltage regulator with a wide input voltage range.
  2. LT1085: An LDO voltage regulator with high output current capability.
  3. TPS7A4700: A low-noise LDO voltage regulator suitable for sensitive analog circuits.

These alternatives can be considered based on specific requirements and design constraints.

Word count: 445 words

Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van LD1085D2T-R in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of LD1085D2T-R in technical solutions:

  1. Q: What is LD1085D2T-R? A: LD1085D2T-R is a voltage regulator IC (integrated circuit) that provides a fixed output voltage for various electronic applications.

  2. Q: What is the input voltage range for LD1085D2T-R? A: The input voltage range for LD1085D2T-R is typically between 4.75V and 20V.

  3. Q: What is the output voltage range of LD1085D2T-R? A: LD1085D2T-R can provide a fixed output voltage ranging from 1.25V to 18V, depending on the specific model.

  4. Q: How much current can LD1085D2T-R handle? A: LD1085D2T-R can handle a maximum output current of 3A, making it suitable for a wide range of applications.

  5. Q: Is LD1085D2T-R a linear or switching regulator? A: LD1085D2T-R is a linear regulator, which means it regulates the output voltage by dissipating excess power as heat.

  6. Q: Can LD1085D2T-R be used in battery-powered applications? A: Yes, LD1085D2T-R can be used in battery-powered applications as long as the input voltage is within its specified range.

  7. Q: Does LD1085D2T-R require any external components for operation? A: Yes, LD1085D2T-R requires a few external components such as capacitors and resistors for proper operation and stability.

  8. Q: Can LD1085D2T-R handle voltage spikes or transients? A: LD1085D2T-R has built-in protection features to handle voltage spikes and transients, ensuring the stability of the output voltage.

  9. Q: What is the thermal resistance of LD1085D2T-R? A: The thermal resistance of LD1085D2T-R is typically around 50°C/W, indicating its ability to dissipate heat efficiently.

  10. Q: Are there any recommended application circuits for LD1085D2T-R? A: Yes, the datasheet of LD1085D2T-R provides several recommended application circuits that can be used as a reference for different scenarios.

Please note that these answers are general and may vary depending on the specific requirements and conditions of your technical solution. It's always recommended to refer to the datasheet and consult with an expert for accurate information.