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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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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LD1117AS33TR v technických řešeních

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.