STMicroelectronics
이미지는 예시일 수 있습니다.
제품 세부사항은 사양을 확인하세요.
LD1117AS25TR
자세히보기 데이터시트

LD1117AS25TR

Basic Information Overview

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

Specifications

  • Output Voltage: 2.5V
  • 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

Detailed Pin Configuration

The LD1117AS25TR 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 common ground reference.

Functional Features

  • Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
  • High output current capability allows for powering a wide range of electronic components.
  • Thermal overload protection prevents damage due to excessive heat.

Advantages and Disadvantages

Advantages: - Low dropout voltage minimizes power dissipation. - High output current capability enables versatile applications. - Thermal overload protection enhances reliability.

Disadvantages: - Limited output voltage options (fixed at 2.5V). - Relatively higher cost compared to other voltage regulators.

Working Principles

The LD1117AS25TR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the output voltage to a reference voltage and adjusting the pass transistor accordingly. When the output voltage drops below the desired level, the pass transistor increases its conductivity to maintain a stable output voltage.

Detailed Application Field Plans

The LD1117AS25TR is commonly used in various electronic devices and applications, including: - Power supplies for microcontrollers and digital circuits - Battery-powered systems requiring stable voltage levels - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

  1. LM1117-2.5: Similar specifications and pin configuration, available in different packages.
  2. LT1117-2.5: Low dropout linear regulator with adjustable output voltage.
  3. LDO1117-2.5: Low dropout voltage regulator with improved line and load regulation.

Note: These alternative models offer similar functionality but may have slight differences in characteristics and package options.

Word count: 305 words

기술 솔루션에 LD1117AS25TR 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.

Sure! Here are 10 common questions and answers related to the application of LD1117AS25TR in technical solutions:

  1. Q: What is LD1117AS25TR? A: LD1117AS25TR is a low dropout voltage regulator that provides a fixed output voltage of 2.5V.

  2. Q: What is the maximum input voltage for LD1117AS25TR? A: The maximum input voltage for LD1117AS25TR is typically around 15V.

  3. Q: Can LD1117AS25TR handle high current loads? A: Yes, LD1117AS25TR can handle current loads up to 800mA.

  4. Q: Is LD1117AS25TR suitable for battery-powered applications? A: Yes, LD1117AS25TR is commonly used in battery-powered applications due to its low dropout voltage and low quiescent current.

  5. Q: Does LD1117AS25TR require any external components for operation? A: Yes, LD1117AS25TR requires input and output capacitors for stability and proper operation.

  6. Q: Can LD1117AS25TR be used in automotive applications? A: Yes, LD1117AS25TR is often used in automotive applications as it can withstand high temperatures and has built-in protection features.

  7. Q: What is the thermal resistance of LD1117AS25TR? A: The thermal resistance of LD1117AS25TR is typically around 50°C/W, which determines its ability to dissipate heat.

  8. Q: Can LD1117AS25TR operate in a wide temperature range? A: Yes, LD1117AS25TR can operate in a temperature range of -40°C to +125°C.

  9. Q: Is LD1117AS25TR suitable for low-power applications? A: Yes, LD1117AS25TR is commonly used in low-power applications due to its low quiescent current and low dropout voltage.

  10. Q: Can LD1117AS25TR be used as a voltage reference? A: No, LD1117AS25TR is not designed to be used as a voltage reference. It is primarily used as a voltage regulator.

Please note that these answers are general and may vary depending on the specific application and requirements.