LD1085V18

Product Overview

• Category: Voltage Regulator
• Use: LD1085V18 is a low-dropout voltage regulator designed to provide a fixed output voltage of 1.8V with a maximum current of 3A.
• Characteristics: It offers low dropout voltage, high accuracy, and excellent line and load regulation. The device is available in a TO-220 package, making it suitable for various applications.
• Package: TO-220
• Essence: LD1085V18 is an essential component in electronic circuits that require a stable and regulated power supply.
• Packaging/Quantity: The LD1085V18 is typically sold in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Output Voltage: 1.8V
• Maximum Output Current: 3A
• Dropout Voltage: 1.2V (typical)
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD1085V18 has three pins:

1. Input (VIN): This pin is used to connect the input voltage source.
2. Output (VOUT): This pin provides the regulated output voltage of 1.8V.
3. Ground (GND): This pin is connected to the ground reference.

Functional Features

• Low dropout voltage: The LD1085V18 can regulate the output voltage even when the input voltage is only slightly higher than the desired output voltage.
• High accuracy: It provides a highly accurate and stable output voltage of 1.8V.
• Excellent line and load regulation: The device maintains a consistent output voltage despite variations in the input voltage or load conditions.

Advantages and Disadvantages

Advantages: - Low dropout voltage allows for efficient power conversion. - High accuracy ensures precise voltage regulation. - Excellent line and load regulation provide stability in various operating conditions.

Disadvantages: - Limited output current of 3A may not be sufficient for high-power applications. - The TO-220 package may require additional heat sinking for better thermal management.

Working Principles

The LD1085V18 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a constant output voltage of 1.8V.

Detailed Application Field Plans

The LD1085V18 can be used in various electronic applications, including but not limited to: - Power supplies for microcontrollers and digital circuits - Battery-powered devices requiring a stable voltage source - Audio amplifiers and other audio equipment - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

• LM1117-1.8: Similar to LD1085V18, it provides a fixed output voltage of 1.8V with a maximum current of 800mA.
• LT1085CT-1.8: This model offers a fixed output voltage of 1.8V with a maximum current of 3A and improved line and load regulation.

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

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