LD1117D25

Product Overview

Category

The LD1117D25 belongs to the category of voltage regulators.

Use

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

Characteristics

• Low dropout voltage
• Output current up to 800 mA
• Fixed output voltage of 2.5 V
• Thermal overload protection
• Short-circuit current limiting

Package

The LD1117D25 comes in a TO-220 package, which is a widely used through-hole package for power semiconductors.

Essence

The essence of LD1117D25 lies in its ability to provide a stable and regulated output voltage of 2.5 V with low dropout voltage.

Packaging/Quantity

The LD1117D25 is typically packaged in reels or tubes, containing a specific quantity of units per package.

Specifications

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

Detailed Pin Configuration

The LD1117D25 has three pins:

1. VIN (Input Voltage): This pin is connected to the input voltage source.
2. GND (Ground): This pin is connected to the ground reference.
3. VOUT (Output Voltage): This pin provides the regulated output voltage of 2.5 V.

Functional Features

• Low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
• Thermal overload protection prevents the device from getting damaged due to excessive heat.
• Short-circuit current limiting protects the LD1117D25 and the connected circuitry from damage in case of a short circuit.

Advantages and Disadvantages

Advantages

• Stable and regulated output voltage.
• Low dropout voltage allows for efficient operation.
• Thermal overload protection ensures device safety.
• Short-circuit current limiting protects the circuitry.

Disadvantages

• Fixed output voltage may limit its use in applications requiring variable output voltages.
• Limited output current capacity compared to some other voltage regulators.

Working Principles

The LD1117D25 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage, adjusting the pass transistor's resistance to maintain a constant output voltage.

Detailed Application Field Plans

The LD1117D25 finds applications in various electronic circuits where a stable 2.5 V voltage supply is required. Some common application areas include:

1. Battery-powered devices: It can be used to regulate the voltage supplied by batteries to ensure consistent performance.
2. Microcontrollers and digital ICs: It provides a stable power source for these components, ensuring reliable operation.
3. Sensor circuits: The LD1117D25 helps maintain a steady voltage supply for accurate sensor readings.
4. Audio amplifiers: It can be used to regulate the voltage supplied to audio amplifier circuits, improving audio quality.

Detailed and Complete Alternative Models

Some alternative models to LD1117D25 that offer similar functionality are:

1. LM1117-2.5: A popular voltage regulator with a fixed output voltage of 2.5 V.
2. LT1117-2.5: Another voltage regulator with a fixed output voltage of 2.5 V, known for its low dropout voltage.
3. MCP1702-2502E: A low dropout voltage regulator with a fixed output voltage of 2.5 V.

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

Word count: 511 words