LD3985J25R

Product Overview

Category

LD3985J25R belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

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

Package

The LD3985J25R comes in a small surface-mount package, typically SOT-23 or similar.

Essence

The essence of LD3985J25R lies in its ability to provide stable and regulated voltage output.

Packaging/Quantity

LD3985J25R is usually packaged in reels or tubes, with quantities varying depending on the manufacturer's specifications.

Specifications

• Input Voltage Range: 2.5V - 6V
• Output Voltage: 2.5V
• Dropout Voltage: 300mV @ 150mA
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD3985J25R has three pins:

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

Functional Features

• Low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
• High output voltage accuracy guarantees precise voltage regulation.
• Low quiescent current minimizes power consumption when the regulator is idle.
• Thermal shutdown protection prevents damage due to excessive heat.
• Short-circuit current limit protects the regulator from overcurrent conditions.

Advantages and Disadvantages

Advantages

• Small form factor
• High output voltage accuracy
• Low quiescent current
• Thermal shutdown protection

Disadvantages

• Limited input voltage range
• Dropout voltage may affect performance in low input voltage scenarios

Working Principles

The LD3985J25R 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 terminals.

Detailed Application Field Plans

LD3985J25R finds applications in various electronic devices, including but not limited to: - Battery-powered devices - Portable audio players - Mobile phones - Digital cameras - Wireless communication modules

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to LD3985J25R are: - LM1117-2.5 - MCP1702-2502E/TO - NCP1117ST25T3G

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

In conclusion, LD3985J25R is a voltage regulator with excellent voltage regulation capabilities, low power consumption, and thermal protection. Its small form factor makes it suitable for various portable electronic devices. However, designers should consider its limited input voltage range and dropout voltage when selecting this regulator for specific applications.