Diodes Incorporated
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AP1117D18L-U
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AP1117D18L-U

Product Overview

  • Category: Voltage Regulator
  • Use: To regulate and stabilize voltage in electronic circuits
  • Characteristics: Low dropout, high accuracy, low noise, compact size
  • Package: TO-252-2 (DPAK)
  • Essence: Linear regulator
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Input Voltage Range: 2.5V to 15V
  • Output Voltage: 1.8V
  • Output Current: Up to 1A
  • Dropout Voltage: 1.3V (typical)
  • Line Regulation: ±0.2% (typical)
  • Load Regulation: ±0.4% (typical)
  • Quiescent Current: 5mA (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AP1117D18L-U has three pins:

  1. VIN (Pin 1): Input voltage pin
  2. GND (Pin 2): Ground pin
  3. VOUT (Pin 3): Output voltage pin

Functional Features

  • Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
  • High accuracy provides precise output voltage regulation.
  • Low noise output for applications sensitive to electrical disturbances.
  • Overcurrent and thermal protection safeguards the device and connected circuitry.

Advantages and Disadvantages

Advantages

  • Compact size allows for easy integration into space-constrained designs.
  • Wide input voltage range enables compatibility with various power sources.
  • Excellent line and load regulation ensure stable output voltage under varying conditions.
  • Robust protection features enhance reliability and prevent damage to the device.

Disadvantages

  • Limited output current capacity may not be suitable for high-power applications.
  • Dropout voltage can cause power dissipation and reduce efficiency in certain scenarios.

Working Principles

The AP1117D18L-U is a linear 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 accordingly to maintain a stable output. The dropout voltage is the minimum voltage required for the regulator to function properly.

Detailed Application Field Plans

The AP1117D18L-U is commonly used in various electronic devices and systems, including:

  1. Battery-powered devices: Provides regulated voltage for microcontrollers, sensors, and other low-power components.
  2. Communication equipment: Stabilizes voltage for RF modules, transceivers, and signal processing circuits.
  3. Industrial control systems: Ensures consistent voltage supply for PLCs, motor drivers, and control boards.
  4. Automotive electronics: Regulates voltage for infotainment systems, lighting modules, and engine control units.

Detailed and Complete Alternative Models

  1. LM1117-1.8: Similar linear regulator with 1.8V output voltage and TO-220 package.
  2. LT1761-1.8: Low dropout linear regulator with 1.8V output voltage and SOT-23 package.
  3. TPS7A1801: High-performance linear regulator with 1.8V output voltage and DSBGA package.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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기술 솔루션에 AP1117D18L-U 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.

Sure! Here are 10 common questions and answers related to the application of AP1117D18L-U in technical solutions:

  1. Q: What is AP1117D18L-U? A: AP1117D18L-U is a low dropout linear voltage regulator that provides a fixed output voltage of 1.8V.

  2. Q: What is the input voltage range for AP1117D18L-U? A: The input voltage range for AP1117D18L-U is typically between 2.5V and 12V.

  3. Q: What is the maximum output current of AP1117D18L-U? A: The maximum output current of AP1117D18L-U is 1A.

  4. Q: Can AP1117D18L-U be used in battery-powered applications? A: Yes, AP1117D18L-U can be used in battery-powered applications as it has a low dropout voltage and operates efficiently with low input voltages.

  5. Q: Is AP1117D18L-U suitable for noise-sensitive applications? A: Yes, AP1117D18L-U has excellent line and load regulation characteristics, making it suitable for noise-sensitive applications.

  6. Q: Does AP1117D18L-U have built-in thermal protection? A: Yes, AP1117D18L-U has built-in thermal shutdown protection that prevents the device from overheating.

  7. Q: Can AP1117D18L-U be used in automotive applications? A: Yes, AP1117D18L-U is designed to meet automotive requirements and can be used in automotive applications.

  8. Q: What is the operating temperature range of AP1117D18L-U? A: The operating temperature range of AP1117D18L-U is typically between -40°C and 125°C.

  9. Q: Does AP1117D18L-U require any external components for operation? A: Yes, AP1117D18L-U requires input and output capacitors for stability and proper operation.

  10. Q: Can AP1117D18L-U be used in space-constrained applications? A: Yes, AP1117D18L-U is available in a small SOT-223 package, making it suitable for space-constrained applications.

Please note that the answers provided here are general and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and consult with the manufacturer for detailed information.