LD1117ADT25TR

Overview

• Category: Linear Voltage Regulator
• Use: Voltage regulation in electronic circuits
• Characteristics:
  • Low dropout voltage
  • High output current capability
  • Thermal overload protection
• Package: SOT-223
• Essence: LD1117ADT25TR is a linear voltage regulator that provides a stable output voltage for various electronic applications.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.75V to 15V
• Output Voltage: 2.5V
• Output Current: Up to 800mA
• Dropout Voltage: 1.2V (typical)
• Line Regulation: 0.2% (typical)
• Load Regulation: 0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LD1117ADT25TR package consists of three pins:

1. Input (VIN): Connects to the input voltage source.
2. Ground (GND): Common ground reference.
3. Output (VOUT): Provides the regulated output voltage.

Functional Features

• Low Dropout Voltage: The LD1117ADT25TR has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 800mA, this voltage regulator can handle a wide range of electronic devices.
• Thermal Overload Protection: The LD1117ADT25TR incorporates thermal overload protection, which prevents the device from overheating and ensures its reliability.

Advantages and Disadvantages

Advantages: - Stable and regulated output voltage - Low dropout voltage - High output current capability - Thermal overload protection ensures device reliability

Disadvantages: - Limited input voltage range (4.75V to 15V) - Relatively high dropout voltage compared to some other regulators

Working Principles

The LD1117ADT25TR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the output voltage with a reference voltage and adjusting the pass transistor accordingly. When the input voltage exceeds the desired output voltage, the pass transistor reduces the voltage across it, maintaining a stable output voltage.

Detailed Application Field Plans

The LD1117ADT25TR can be used in various electronic applications that require a stable and regulated output voltage. Some common application fields include:

1. Power Supplies: The LD1117ADT25TR can be used in power supply circuits to provide a regulated voltage for microcontrollers, sensors, and other electronic components.
2. Battery-Powered Devices: It can be utilized in battery-powered devices to maintain a constant voltage level as the battery discharges.
3. Audio Amplifiers: The LD1117ADT25TR can be employed in audio amplifier circuits to ensure a stable power supply for optimal audio performance.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LD1117ADT25TR are:

1. LM317: A popular linear voltage regulator with adjustable output voltage.
2. LT1085: A high-current linear voltage regulator with low dropout voltage.
3. LDO50V: A low dropout voltage regulator suitable for applications with higher input voltages.

These alternative models can be considered based on specific requirements and design constraints.

In conclusion, the LD1117ADT25TR is a linear voltage regulator that provides stable and regulated output voltage for various electronic applications. With its low dropout voltage, high output current capability, and thermal overload protection, it offers several advantages. However, it has a limited input voltage range and relatively higher dropout voltage compared to some alternatives. Understanding its specifications, pin configuration, functional features, and application field plans can help in effectively utilizing this voltage regulator in electronic circuits.