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LD1117DT25CTR
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LD1117DT25CTR

Product Overview

  • Category: Linear Voltage Regulator
  • Use: Voltage regulation in electronic circuits
  • Characteristics: Low dropout, high accuracy, low quiescent current
  • Package: SOT-223
  • Essence: Integrated circuit for voltage regulation
  • 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)
  • Quiescent Current: 5mA (typical)
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LD1117DT25CTR has three pins:

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

Functional Features

  • Low Dropout: The LD1117DT25CTR 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 Accuracy: It provides a highly accurate output voltage of 2.5V, ensuring precise voltage regulation in electronic circuits.
  • Low Quiescent Current: The regulator consumes minimal current when there is no load, reducing power consumption and extending battery life.

Advantages and Disadvantages

Advantages: - High accuracy and stability in voltage regulation. - Low dropout voltage enables efficient regulation even with low input voltages. - Low quiescent current minimizes power consumption.

Disadvantages: - Limited output current capacity (up to 800mA). - Requires external capacitors for stability and noise reduction.

Working Principles

The LD1117DT25CTR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage, adjusting the pass transistor to maintain a constant output voltage. The dropout voltage is minimized through the use of a PNP pass transistor.

Detailed Application Field Plans

The LD1117DT25CTR is commonly used in various electronic applications, including:

  1. Battery-Powered Devices: Provides stable voltage regulation in portable devices such as smartphones, tablets, and portable audio players.
  2. Embedded Systems: Ensures reliable voltage supply in microcontroller-based systems, sensors, and other embedded applications.
  3. Automotive Electronics: Used in automotive circuits for voltage regulation, ensuring stable operation of various components.
  4. Industrial Control Systems: Provides regulated voltage for control systems, PLCs, and industrial automation equipment.

Detailed and Complete Alternative Models

  1. LM1117-2.5: Similar specifications and pin configuration, available in different packages.
  2. LT1761-2.5: Low dropout regulator with similar characteristics, suitable for space-constrained applications.
  3. MCP1702-2.5: Low quiescent current regulator with comparable performance, available at a lower cost.

These alternative models offer similar functionality and can be considered as replacements for the LD1117DT25CTR in various applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LD1117DT25CTR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LD1117DT25CTR in technical solutions:

  1. Q: What is LD1117DT25CTR? A: LD1117DT25CTR is a low dropout voltage regulator that provides a fixed output voltage of 2.5V.

  2. Q: What is the maximum input voltage for LD1117DT25CTR? A: The maximum input voltage for LD1117DT25CTR is typically 15V, but it can handle up to 20V in some cases.

  3. Q: What is the dropout voltage of LD1117DT25CTR? A: The dropout voltage of LD1117DT25CTR is typically around 1.2V at a load current of 800mA.

  4. Q: Can LD1117DT25CTR be used to regulate higher voltages? A: No, LD1117DT25CTR is specifically designed to regulate voltages down to 2.5V. It cannot be used to regulate higher voltages.

  5. Q: What is the maximum output current of LD1117DT25CTR? A: LD1117DT25CTR can provide a maximum output current of 800mA.

  6. Q: Is LD1117DT25CTR suitable for battery-powered applications? A: Yes, LD1117DT25CTR is commonly used in battery-powered applications due to its low dropout voltage and low quiescent current.

  7. Q: Does LD1117DT25CTR require any external components for operation? A: Yes, LD1117DT25CTR requires an input capacitor and an output capacitor for stability and proper operation.

  8. Q: Can LD1117DT25CTR handle short-circuit conditions? A: Yes, LD1117DT25CTR has built-in protection features that allow it to handle short-circuit conditions without damage.

  9. Q: Can LD1117DT25CTR operate in high-temperature environments? A: LD1117DT25CTR has a maximum junction temperature of 125°C, making it suitable for operation in moderate to high-temperature environments.

  10. Q: Is LD1117DT25CTR available in different package options? A: Yes, LD1117DT25CTR is available in various package options, including SOT-223 and DPAK, to suit different application requirements.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and manufacturer recommendations.