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LD1085D2T18R
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LD1085D2T18R

Product Overview

Category

LD1085D2T18R belongs to the category of voltage regulators.

Use

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

Characteristics

  • LD1085D2T18R is a low-dropout linear voltage regulator.
  • It has a fixed output voltage of 1.8V.
  • The device operates with a maximum input voltage of 30V.
  • LD1085D2T18R can provide a maximum output current of 3A.

Package

The LD1085D2T18R comes in a TO-220 package, which is a widely used through-hole package for power devices.

Essence

The essence of LD1085D2T18R lies in its ability to maintain a stable output voltage despite fluctuations in the input voltage.

Packaging/Quantity

LD1085D2T18R is typically sold in reels or tubes, containing a specific quantity of units per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

  • Input Voltage Range: Up to 30V
  • Output Voltage: 1.8V (fixed)
  • Output Current: Up to 3A
  • Dropout Voltage: 1.5V (typical)
  • Line Regulation: ±0.2% (typical)
  • Load Regulation: ±0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD1085D2T18R 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

  • Low dropout voltage: LD1085D2T18R can operate with a low input-output voltage differential, minimizing power dissipation.
  • Overcurrent and thermal protection: The device includes built-in protection mechanisms to prevent damage due to excessive current or temperature.
  • Fast transient response: LD1085D2T18R can quickly respond to changes in load conditions, maintaining a stable output voltage.

Advantages and Disadvantages

Advantages

  • High output current capability.
  • Low dropout voltage.
  • Wide operating temperature range.
  • Built-in protection features.

Disadvantages

  • Fixed output voltage may limit its versatility in certain applications.
  • Requires external components for proper operation.

Working Principles

LD1085D2T18R operates based on the principle of linear regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. By maintaining a constant voltage drop across the pass transistor, LD1085D2T18R ensures a stable output voltage.

Detailed Application Field Plans

LD1085D2T18R finds applications in various electronic systems that require a regulated 1.8V power supply. Some common application fields include:

  1. Microcontroller circuits
  2. Digital logic circuits
  3. Audio amplifiers
  4. Battery-powered devices
  5. Industrial control systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LD1085D2T18R are:

  1. LM1117-1.8: A popular low-dropout linear regulator with a fixed 1.8V output voltage.
  2. LT1085CT-1.8: Another high-current linear regulator with a fixed 1.8V output voltage.
  3. TPS7A1801-SP: A radiation-hardened linear regulator suitable for space applications, offering a fixed 1.8V output voltage.

These alternative models can be considered depending on specific requirements and availability.

(Note: The content provided above is a sample structure for an encyclopedia entry. The actual content may vary based on the specific product and its characteristics.)

Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de LD1085D2T18R en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of LD1085D2T18R in technical solutions:

  1. Q: What is LD1085D2T18R? A: LD1085D2T18R is a voltage regulator IC that provides a fixed output voltage of 1.8V.

  2. Q: What is the maximum input voltage for LD1085D2T18R? A: The maximum input voltage for LD1085D2T18R is 30V.

  3. Q: What is the maximum output current LD1085D2T18R can handle? A: LD1085D2T18R can handle a maximum output current of 3A.

  4. Q: Can LD1085D2T18R be used to step down voltage from 5V to 1.8V? A: Yes, LD1085D2T18R can be used to step down voltage from 5V to 1.8V.

  5. Q: Does LD1085D2T18R require any external components for operation? A: Yes, LD1085D2T18R requires input and output capacitors for stable operation.

  6. Q: What is the dropout voltage of LD1085D2T18R? A: The dropout voltage of LD1085D2T18R is typically around 1.5V.

  7. Q: Can LD1085D2T18R operate at high temperatures? A: Yes, LD1085D2T18R has a wide operating temperature range of -40°C to +125°C.

  8. Q: Is LD1085D2T18R suitable for battery-powered applications? A: Yes, LD1085D2T18R is suitable for battery-powered applications as it has low quiescent current.

  9. Q: Can LD1085D2T18R be used in both linear and switching power supply designs? A: No, LD1085D2T18R is a linear voltage regulator and is not suitable for switching power supply designs.

  10. Q: Are there any protection features in LD1085D2T18R? A: Yes, LD1085D2T18R provides overcurrent protection and thermal shutdown to protect the IC from damage.

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