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LD1117S30TR
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LD1117S30TR

Basic Information Overview

  • Category: Voltage Regulator
  • Use: To regulate voltage in electronic circuits
  • Characteristics:
    • Low dropout voltage
    • Output current up to 800 mA
    • Adjustable output voltage
  • Package: SOT-223
  • Essence: Linear voltage regulator
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.75 V to 15 V
  • Output Voltage Range: 1.2 V to 13.8 V
  • Dropout Voltage: 1.1 V (typical)
  • Output Current: Up to 800 mA
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD1117S30TR has three pins: 1. Vin (Input Voltage): Connects to the input voltage source. 2. Vout (Output Voltage): Provides the regulated output voltage. 3. GND (Ground): Connected to the ground reference of the circuit.

Functional Features

  • Low dropout voltage ensures efficient regulation even with small voltage differences between input and output.
  • Adjustable output voltage allows for flexibility in various applications.
  • Overcurrent and thermal protection safeguards the device and connected components.
  • Fast transient response enables stable operation during load changes.

Advantages

  • Compact SOT-223 package saves board space.
  • Wide input voltage range accommodates different power supply sources.
  • High output current capability supports a variety of loads.
  • Excellent line and load regulation ensures stable output voltage.

Disadvantages

  • Higher dropout voltage compared to some other voltage regulators.
  • Limited output voltage range may not suit all applications.
  • Requires external capacitors for stability, adding to the component count.

Working Principles

The LD1117S30TR 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 and adjusting the pass transistor accordingly. The dropout voltage is minimized by using a low resistance pass element.

Detailed Application Field Plans

The LD1117S30TR finds applications in various electronic devices, including: 1. Power supplies for microcontrollers and digital circuits. 2. Battery-powered systems requiring stable voltage levels. 3. Automotive electronics, such as infotainment systems and engine control units. 4. Industrial control systems and instrumentation. 5. Consumer electronics, such as audio/video equipment and portable devices.

Detailed and Complete Alternative Models

Some alternative models to LD1117S30TR are: - LM317: Adjustable voltage regulator with similar characteristics. - LDO50V: Low dropout voltage regulator suitable for higher input voltages. - LT1086: High current, adjustable linear regulator with better line and load regulation.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van LD1117S30TR in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of LD1117S30TR in technical solutions:

  1. Q: What is LD1117S30TR? A: LD1117S30TR is a low dropout voltage regulator that provides a fixed output voltage of 3.0V.

  2. Q: What is the maximum input voltage for LD1117S30TR? A: The maximum input voltage for LD1117S30TR is typically around 15V.

  3. Q: What is the dropout voltage of LD1117S30TR? A: The dropout voltage of LD1117S30TR is typically around 1.2V at a load current of 800mA.

  4. Q: Can LD1117S30TR handle high currents? A: Yes, LD1117S30TR can handle a maximum output current of 800mA.

  5. Q: Is LD1117S30TR suitable for battery-powered applications? A: Yes, LD1117S30TR is commonly used in battery-powered applications due to its low dropout voltage and low quiescent current.

  6. Q: Does LD1117S30TR require any external components for operation? A: Yes, LD1117S30TR requires input and output capacitors for stability. Refer to the datasheet for recommended values.

  7. Q: Can LD1117S30TR be used in automotive applications? A: Yes, LD1117S30TR is often used in automotive applications as it meets the requirements for automotive-grade voltage regulators.

  8. Q: What is the thermal resistance of LD1117S30TR? A: The thermal resistance of LD1117S30TR is typically around 50°C/W, which determines its ability to dissipate heat.

  9. Q: Can LD1117S30TR be used in adjustable voltage applications? A: No, LD1117S30TR provides a fixed output voltage of 3.0V and cannot be adjusted.

  10. Q: Is LD1117S30TR available in different package options? A: Yes, LD1117S30TR is available in various package options such as SOT-223, TO-252, and DPAK, providing flexibility for different PCB layouts and thermal requirements.

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