LD2981ABU18TR

Product Overview

Category

LD2981ABU18TR belongs to the category of voltage regulators.

Use

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

Characteristics

• Low dropout voltage
• High output voltage accuracy
• Low quiescent current
• Thermal shutdown protection
• Short-circuit current limit

Package

LD2981ABU18TR is available in a small surface-mount SOT-23 package.

Essence

The essence of LD2981ABU18TR lies in its ability to provide stable and regulated voltage output for various electronic applications.

Packaging/Quantity

LD2981ABU18TR is typically packaged in reels, with each reel containing a specific quantity of units. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage: 1.8V
• Dropout Voltage: 300mV at 100mA
• Quiescent Current: 50µA
• Maximum Output Current: 100mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

LD2981ABU18TR has three pins:

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

Functional Features

• Low Dropout Voltage: LD2981ABU18TR exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• High Output Voltage Accuracy: It offers high precision in maintaining the desired output voltage, resulting in reliable performance.
• Low Quiescent Current: LD2981ABU18TR consumes minimal current when in standby mode, conserving power and extending battery life.
• Thermal Shutdown Protection: The regulator includes built-in thermal shutdown protection, preventing damage due to excessive heat.
• Short-Circuit Current Limit: LD2981ABU18TR has a short-circuit current limit feature that protects the device from potential damage during a short circuit event.

Advantages and Disadvantages

Advantages

• Provides stable and regulated voltage output.
• Low dropout voltage ensures efficient regulation.
• High output voltage accuracy for reliable performance.
• Low quiescent current consumption for power efficiency.
• Thermal shutdown protection prevents overheating.
• Short-circuit current limit protects the device.

Disadvantages

• Limited maximum output current of 100mA.
• Input voltage range is restricted to 2.5V to 16V.

Working Principles

LD2981ABU18TR operates based on the principle of linear voltage regulation. It utilizes a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. This allows it to maintain a constant output voltage despite variations in the input voltage or load conditions.

Detailed Application Field Plans

LD2981ABU18TR finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Industrial control systems - Automotive electronics - Medical equipment - Communication devices

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to LD2981ABU18TR include: - LM1117-1.8 - LT1761-1.8 - MCP1701-1802E/TO - NCP1117ST18T3G

These models offer similar functionality and specifications, providing options for different design requirements.

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