LD1084D2M18R

Product Overview

Category

LD1084D2M18R belongs to the category of voltage regulators.

Use

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

Characteristics

• LD1084D2M18R is a low-dropout (LDO) voltage regulator.
• It has a fixed output voltage of 1.8V.
• The regulator operates with a maximum input voltage of 20V.
• It provides a maximum output current of 5A.
• LD1084D2M18R offers excellent line and load regulation.
• It has built-in thermal shutdown and current limit protection features.

Package

The LD1084D2M18R comes in a TO-263 package, also known as D2PAK or DDPAK.

Essence

The essence of LD1084D2M18R lies in its ability to provide a stable and regulated output voltage of 1.8V, even when the input voltage fluctuates.

Packaging/Quantity

LD1084D2M18R is typically packaged in reels or tubes, containing a specific quantity of units per package. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Input Voltage Range: Up to 20V
• Output Voltage: 1.8V
• Output Current: Up to 5A
• Dropout Voltage: 1.3V (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Thermal Shutdown Protection: Yes
• Current Limit Protection: Yes

Detailed Pin Configuration

The LD1084D2M18R has three pins:

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

Functional Features

• Low Dropout Voltage: LD1084D2M18R has a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• High Output Current: It can deliver a maximum output current of 5A, making it suitable for various applications that require high power.
• Thermal Shutdown Protection: The regulator incorporates thermal shutdown protection, which prevents damage due to excessive heat.
• Current Limit Protection: LD1084D2M18R includes current limit protection, safeguarding the device and the connected circuitry from excessive current flow.

Advantages and Disadvantages

Advantages

• Stable and precise output voltage regulation.
• High output current capability.
• Built-in thermal and current limit protection.
• Low dropout voltage ensures efficient operation.

Disadvantages

• Fixed output voltage may limit its versatility in certain applications.
• Higher cost compared to standard linear regulators.

Working Principles

LD1084D2M18R 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 pins. The internal circuitry compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage of 1.8V.

Detailed Application Field Plans

LD1084D2M18R finds applications in various electronic systems where a stable and regulated 1.8V voltage supply is required. Some common application fields include:

1. Embedded Systems: LD1084D2M18R can be used in microcontroller-based embedded systems to provide a reliable power source for the microcontroller and other peripheral components.
2. Communication Systems: It can be employed in communication systems, such as routers and switches, to ensure stable voltage supply to critical components.
3. Industrial Control Systems: LD1084D2M18R is suitable for industrial control systems that require precise voltage regulation for sensors, actuators, and other control circuitry.
4. Automotive Electronics: It can be utilized in automotive electronics applications, such as engine control units (ECUs) and infotainment systems, to maintain a stable voltage for various subsystems.

Detailed and Complete Alternative Models

1. LM1117-1.8: This is another popular 1.8V fixed voltage regulator with similar characteristics and package options.
2. LT1084: A high-performance linear regulator offering adjustable output voltage and higher current capability.
3. TPS7A1801: An ultra-low dropout voltage regulator with a fixed 1.8V output and excellent line and load regulation.

These alternative models provide similar functionality and can be considered as substitutes for LD1084D2M18R depending on specific requirements and availability.

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