LD2985AM50R

Product Overview

Category

LD2985AM50R belongs to the category of voltage regulators.

Use

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

Characteristics

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

Package

The LD2985AM50R comes in a small SOT-23 package, which is suitable for space-constrained applications.

Essence

The essence of LD2985AM50R lies in its ability to provide a stable and regulated output voltage despite fluctuations in input voltage.

Packaging/Quantity

The LD2985AM50R is typically packaged in reels containing 3000 units.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage: 5V
• Dropout Voltage: 400mV at 100mA
• Quiescent Current: 75µA
• Output Current: Up to 150mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD2985AM50R has three pins:

1. VIN (Pin 1): Input voltage pin.
2. GND (Pin 2): Ground reference pin.
3. VOUT (Pin 3): Regulated output voltage pin.

Functional Features

• Low Dropout Voltage: The LD2985AM50R exhibits a low dropout voltage, enabling it to operate efficiently even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: With a low quiescent current, the regulator minimizes power consumption when the load is light or idle.
• High Output Voltage Accuracy: The LD2985AM50R provides high output voltage accuracy, ensuring precise voltage regulation.
• Thermal Shutdown Protection: It incorporates thermal shutdown protection, which safeguards the device from overheating and potential damage.
• Short-Circuit Current Limit: The regulator has a built-in short-circuit current limit to protect the circuit from excessive current flow during a short-circuit condition.

Advantages and Disadvantages

Advantages

• Small package size suitable for space-constrained applications.
• Low dropout voltage ensures efficient operation.
• High output voltage accuracy for precise regulation.
• Thermal shutdown protection prevents overheating.

Disadvantages

• Limited output current capacity (up to 150mA).
• Input voltage range is restricted to 2.5V to 16V.

Working Principles

The LD2985AM50R 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. By maintaining a constant voltage drop across the pass transistor, it compensates for variations in the input voltage, ensuring a stable output voltage.

Detailed Application Field Plans

The LD2985AM50R finds application in various electronic devices and circuits, including but not limited to: - Battery-powered devices - Portable consumer electronics - Embedded systems - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

1. LM1117-5.0: A popular alternative with similar specifications and pin configuration.
2. MCP1700-5002E/TO: Another alternative offering comparable performance and package options.
3. TS2950CT-5.0: An alternative choice with a slightly higher output current capability.

These alternatives can be considered based on specific requirements and availability.

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