LD1117V50C

Product Overview

• Category: Voltage Regulator
• Use: LD1117V50C is a low-dropout linear voltage regulator designed to provide a fixed output voltage of 5.0V with a maximum current of 800mA.
• Characteristics: It offers low dropout voltage, high accuracy, and excellent line and load regulation. The device operates within a wide input voltage range and is suitable for various applications.
• Package: LD1117V50C comes in a TO-220 package, which provides good thermal conductivity and easy mounting on a PCB.
• Essence: The essence of LD1117V50C lies in its ability to regulate the input voltage to a stable 5.0V output, ensuring reliable power supply for electronic circuits.
• Packaging/Quantity: LD1117V50C is typically available in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Input Voltage Range: 4.75V to 15V
• Output Voltage: 5.0V
• Maximum Output Current: 800mA
• Dropout Voltage: 1.2V (typical)
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LD1117V50C has three pins:

1. Input (IN): This pin is connected to the input voltage source.
2. Output (OUT): This pin provides the regulated 5.0V output voltage.
3. Ground (GND): This pin is connected to the ground reference.

Functional Features

• Low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
• High accuracy and excellent line/load regulation provide a stable output voltage under varying conditions.
• Overcurrent and thermal protection mechanisms safeguard the device and the connected circuitry from damage.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications. - Good thermal conductivity of the TO-220 package ensures efficient heat dissipation. - High accuracy and low dropout voltage result in reliable voltage regulation.

Disadvantages: - Limited maximum output current of 800mA may not be sufficient for high-power applications. - The TO-220 package may require additional space on the PCB compared to smaller packages.

Working Principles

The LD1117V50C is a linear voltage regulator that utilizes 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 of 5.0V.

Detailed Application Field Plans

LD1117V50C finds applications in various electronic devices and systems, including but not limited to: - Power supplies for microcontrollers, sensors, and other low-power digital circuits. - Battery-powered devices requiring a stable 5.0V supply voltage. - Automotive electronics, where reliable voltage regulation is crucial for proper operation.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LD1117V50C are: - LM1117-5.0: A popular voltage regulator with comparable specifications and pin configuration. - LT1086: A higher current variant capable of delivering up to 1.5A output current. - L78M05CV: Another widely used 5.0V voltage regulator with a different package option (TO-220AB).

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