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LD1117AS33TR
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LD1117AS33TR

Product Overview

  • Category: Voltage Regulator
  • Use: To regulate and stabilize voltage in electronic circuits
  • Characteristics:
    • Low dropout voltage
    • High output current capability
    • Thermal overload protection
    • Short-circuit protection
  • Package: SOT-223
  • Essence: Linear voltage regulator
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Output Voltage: 3.3V
  • Input Voltage Range: 4.75V to 15V
  • Dropout Voltage: 1.2V (typical)
  • Output Current: Up to 800mA
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LD1117AS33TR 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: Allows operation with small voltage differentials between input and output.
  • High output current capability: Can deliver up to 800mA of current to power various components.
  • Thermal overload protection: Safeguards the regulator from excessive heat.
  • Short-circuit protection: Prevents damage in case of a short circuit.

Advantages and Disadvantages

Advantages: - Stable and regulated output voltage. - Wide input voltage range. - Compact package size. - Overload and short-circuit protection.

Disadvantages: - Relatively high dropout voltage compared to some other regulators. - Limited output current compared to higher-power regulators.

Working Principles

The LD1117AS33TR 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 and adjusting the pass transistor accordingly. This ensures a stable output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

The LD1117AS33TR is commonly used in various electronic devices and circuits, including:

  1. Power supplies for microcontrollers and digital ICs.
  2. Battery-powered devices requiring a stable voltage source.
  3. Audio amplifiers and preamplifiers.
  4. Industrial control systems.
  5. Automotive electronics.

Detailed and Complete Alternative Models

  1. LM1117-3.3: Similar specifications and pin configuration, available in different package options.
  2. LT1117-3.3: Low dropout voltage regulator with similar characteristics and pin configuration.
  3. MCP1703-3302E: Another 3.3V linear voltage regulator with comparable features.

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

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van LD1117AS33TR in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of LD1117AS33TR in technical solutions:

  1. Q: What is LD1117AS33TR? A: LD1117AS33TR is a low dropout voltage regulator that provides a fixed output voltage of 3.3V.

  2. Q: What is the maximum input voltage for LD1117AS33TR? A: The maximum input voltage for LD1117AS33TR is typically 15V, but it can handle up to 20V in some cases.

  3. Q: What is the dropout voltage of LD1117AS33TR? A: The dropout voltage of LD1117AS33TR is typically around 1.2V at a load current of 800mA.

  4. Q: Can LD1117AS33TR be used to regulate voltages other than 3.3V? A: No, LD1117AS33TR is specifically designed to provide a fixed output voltage of 3.3V.

  5. Q: What is the maximum output current of LD1117AS33TR? A: LD1117AS33TR can provide a maximum output current of 800mA.

  6. Q: Is LD1117AS33TR suitable for battery-powered applications? A: Yes, LD1117AS33TR is suitable for battery-powered applications as it has a low quiescent current and low dropout voltage.

  7. Q: Does LD1117AS33TR require any external components for operation? A: Yes, LD1117AS33TR requires an input capacitor and an output capacitor for stability and proper operation.

  8. Q: Can LD1117AS33TR handle short-circuit conditions? A: Yes, LD1117AS33TR has built-in short-circuit protection, which prevents damage to the regulator during short-circuit conditions.

  9. Q: Can LD1117AS33TR operate in high-temperature environments? A: Yes, LD1117AS33TR can operate in a wide temperature range, typically from -40°C to 125°C.

  10. Q: Is LD1117AS33TR available in different package options? A: Yes, LD1117AS33TR is available in various package options, including SOT-223, TO-220, and DPAK.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for LD1117AS33TR.