LD3985G25R

Product Overview

Category

LD3985G25R belongs to the category of voltage regulators.

Use

It is 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

LD3985G25R comes in a small SOT-23 package.

Essence

The essence of LD3985G25R is its ability to provide stable and regulated voltage to electronic devices.

Packaging/Quantity

LD3985G25R is typically packaged in reels, with each reel containing 3000 units.

Specifications

• Input Voltage Range: 2.5V - 6V
• Output Voltage: 2.5V
• Dropout Voltage: 200mV @ 150mA
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

1. GND (Ground)
2. VIN (Input Voltage)
3. VOUT (Output Voltage)

Functional Features

• Low dropout voltage ensures efficient regulation even when input voltage is close to the desired output voltage.
• High output voltage accuracy provides precise voltage regulation for sensitive electronic components.
• Low quiescent current minimizes power consumption when the regulator is in standby mode.
• Thermal shutdown protection prevents damage due to excessive heat.
• Short-circuit current limit protects the regulator and connected devices from damage in case of a short circuit.

Advantages and Disadvantages

Advantages

• Provides stable and regulated voltage for electronic circuits.
• Compact SOT-23 package allows for easy integration into various applications.
• Low dropout voltage ensures efficient operation even with low input voltages.
• High output voltage accuracy ensures precise voltage regulation.

Disadvantages

• Limited to an output voltage of 2.5V.
• May require additional components for certain applications, such as input and output capacitors.

Working Principles

LD3985G25R operates based on the principle of a linear voltage regulator. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The regulator compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

LD3985G25R finds applications in various electronic devices and systems that require a stable and regulated voltage supply. Some common application fields include:

1. Battery-powered devices: LD3985G25R can be used in portable electronics, such as smartphones, tablets, and wearable devices, to ensure consistent power supply from the battery.

2. Embedded systems: It is suitable for powering microcontrollers, sensors, and other components in embedded systems, ensuring reliable operation.

3. Automotive electronics: LD3985G25R can be utilized in automotive applications, such as infotainment systems, navigation devices, and engine control units, to provide stable voltage despite fluctuations in the vehicle's electrical system.

4. Industrial equipment: It can be employed in industrial automation systems, control panels, and instrumentation devices to maintain precise voltage levels for accurate operation.

Detailed and Complete Alternative Models

1. LM1117-2.5: A popular alternative with similar specifications and package type.
2. MCP1702-2502E/TO: Another alternative offering low dropout voltage and high accuracy.
3. LP2985-2.5: An alternative with a slightly higher dropout voltage but lower quiescent current.

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

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