LD1117S25TR

Product Overview

Category

The LD1117S25TR 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 current capability
• Thermal overload protection
• Short-circuit current limiting

Package

The LD1117S25TR comes in a small surface-mount package.

Essence

This voltage regulator is designed to provide a stable output voltage despite fluctuations in input voltage or load conditions.

Packaging/Quantity

The LD1117S25TR is typically packaged in reels and is available in large quantities for industrial applications.

Specifications

• Input Voltage Range: 4.75V to 15V
• Output Voltage: 2.5V
• Output Current: Up to 800mA
• Dropout Voltage: 1.2V (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD1117S25TR has three pins:

1. VIN: Input voltage pin
2. VOUT: Output voltage pin
3. GND: Ground pin

Functional Features

• Low dropout voltage ensures efficient regulation even with low input voltages.
• High output current capability allows it to power a wide range of electronic components.
• Thermal overload protection prevents damage due to excessive heat.
• Short-circuit current limiting protects the regulator and connected devices from damage in case of a short circuit.

Advantages and Disadvantages

Advantages

• Stable output voltage despite variations in input voltage or load conditions.
• Compact surface-mount package for easy integration into circuit boards.
• Wide operating temperature range suitable for various environments.

Disadvantages

• Limited output current compared to some other voltage regulators.
• Higher dropout voltage compared to certain alternatives.

Working Principles

The LD1117S25TR 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. This ensures that the output voltage remains constant, even when the input voltage or load changes.

Detailed Application Field Plans

The LD1117S25TR is widely used in various electronic devices and applications, including:

1. Power supplies for microcontrollers and other digital ICs.
2. Battery-powered devices requiring stable voltage levels.
3. Automotive electronics, such as infotainment systems and engine control units.
4. Industrial automation systems.
5. Communication equipment, including routers and modems.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LD1117S25TR include:

1. LM317: A popular adjustable voltage regulator with similar characteristics.
2. LT1086: A high-current, low dropout voltage regulator suitable for demanding applications.
3. LDO50V: A low dropout voltage regulator designed for higher input voltages.

These alternatives offer different specifications and features, allowing designers to choose the most suitable option for their specific requirements.

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