LD1085DT-R

Product Overview

Category

LD1085DT-R belongs to the category of voltage regulators.

Use

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

Characteristics

• LD1085DT-R is a low-dropout (LDO) linear voltage regulator.
• It provides a fixed output voltage with low power dissipation.
• The device operates within a wide input voltage range.
• LD1085DT-R offers high accuracy and excellent line and load regulation.

Package

The LD1085DT-R comes in a TO-220 package, which is a widely used through-hole package for power semiconductors.

Essence

The essence of LD1085DT-R lies in its ability to provide a stable and regulated output voltage despite variations in input voltage and load conditions.

Packaging/Quantity

LD1085DT-R 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: 4.2V to 25V
• Output Voltage Range: 1.2V to 20V
• Maximum Output Current: 3A
• Dropout Voltage: 1.3V (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD1085DT-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

• Low dropout voltage ensures efficient regulation even with small voltage differences between input and output.
• Built-in thermal overload protection prevents the device from overheating.
• Short-circuit protection safeguards against excessive current flow.
• Reverse polarity protection guards against incorrect connection.

Advantages

• LD1085DT-R offers high accuracy and stability in voltage regulation.
• It can handle a wide range of input voltages, making it versatile for various applications.
• The low dropout voltage minimizes power dissipation, increasing overall efficiency.
• The device's built-in protections enhance reliability and prevent damage to the circuit.

Disadvantages

• LD1085DT-R may not be suitable for applications requiring very high output currents.
• The TO-220 package may require additional heat sinking for efficient thermal management in high-power applications.

Working Principles

LD1085DT-R operates based on the principle of linear voltage regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. This allows LD1085DT-R to maintain a constant output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

LD1085DT-R finds applications in various electronic devices and systems, including but not limited to:

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

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LD1085DT-R include:

1. LM317: A popular adjustable linear voltage regulator with a wide input voltage range.
2. LT1085: A high-current LDO voltage regulator with low dropout voltage.
3. ADP3339: An ultra-low dropout linear regulator with high accuracy and low noise.

These alternative models can be considered based on specific requirements and application needs.

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