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LD1117DT30
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LD1117DT30

Product Overview

  • Category: Voltage Regulator
  • Use: LD1117DT30 is a low dropout linear voltage regulator designed to provide a fixed output voltage of 3.0V with a maximum current of 800mA.
  • Characteristics: It offers low dropout voltage, high accuracy, and excellent line and load regulation. The device operates within a wide input voltage range and is suitable for various applications.
  • Package: LD1117DT30 comes in a TO-252 package, also known as DPAK (Plastic Package).
  • Essence: The LD1117DT30 is an essential component in electronic circuits that require a stable and regulated power supply at 3.0V.
  • Packaging/Quantity: The LD1117DT30 is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

  • Input Voltage Range: 4.2V to 15V
  • Output Voltage: 3.0V
  • Maximum Output Current: 800mA
  • Dropout Voltage: 1.2V (typical)
  • Line Regulation: ±0.2% (typical)
  • Load Regulation: ±0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LD1117DT30 has three pins:

  1. Input (VIN): This pin is used to connect the input voltage source.
  2. Ground (GND): This pin is connected to the ground reference.
  3. Output (VOUT): This pin provides the regulated output voltage of 3.0V.

Functional Features

  • Low dropout voltage ensures efficient power conversion even when the input voltage is close to the desired output voltage.
  • High accuracy and excellent line/load regulation provide a stable output voltage under varying conditions.
  • Overcurrent and thermal protection features safeguard the device and connected circuitry from damage.

Advantages

  • Wide input voltage range allows for flexibility in various applications.
  • Low dropout voltage minimizes power dissipation and improves efficiency.
  • Compact TO-252 package provides ease of integration into circuit designs.
  • Excellent line and load regulation ensure a stable output voltage.

Disadvantages

  • Limited maximum output current of 800mA may not be suitable for high-power applications.
  • Dropout voltage of 1.2V may result in higher power dissipation compared to other regulators with lower dropout voltages.

Working Principles

The LD1117DT30 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, adjusting the pass transistor's resistance to maintain a constant output voltage of 3.0V.

Detailed Application Field Plans

The LD1117DT30 is widely used in various electronic devices and systems, including:

  1. Battery-powered devices: Provides a stable 3.0V supply for microcontrollers, sensors, and other low-power components.
  2. Embedded systems: Ensures reliable power for digital circuits, communication modules, and memory devices.
  3. Automotive electronics: Used in automotive control units, infotainment systems, and lighting applications.
  4. Industrial equipment: Provides regulated power for sensors, actuators, and control circuits.
  5. Consumer electronics: Suitable for portable audio players, handheld gaming devices, and other battery-operated gadgets.

Alternative Models

  • LM1117-3.0: Similar specifications and pin configuration, available in different packages.
  • LT1117-3.0: Offers enhanced performance and additional features, but at a higher cost.
  • LP2985-3.0: Low quiescent current and small package size, suitable for power-sensitive applications.

Note: This is not an exhaustive list, and there are several other alternative models available in the market.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van LD1117DT30 in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of LD1117DT30 in technical solutions:

  1. Q: What is LD1117DT30? A: LD1117DT30 is a low dropout voltage regulator that provides a fixed output voltage of 3.0V.

  2. Q: What is the maximum input voltage for LD1117DT30? A: The maximum input voltage for LD1117DT30 is typically around 15V, but it can handle up to 20V in some cases.

  3. Q: What is the dropout voltage of LD1117DT30? A: The dropout voltage of LD1117DT30 is typically around 1.2V at a load current of 800mA.

  4. Q: Can LD1117DT30 be used to regulate higher voltages? A: No, LD1117DT30 is specifically designed to regulate lower voltages and cannot be used to regulate higher voltages.

  5. Q: What is the maximum output current of LD1117DT30? A: The maximum output current of LD1117DT30 is 800mA, but it is recommended to operate below this limit for better performance.

  6. Q: Is LD1117DT30 suitable for battery-powered applications? A: Yes, LD1117DT30 is commonly used in battery-powered applications due to its low dropout voltage and low quiescent current.

  7. Q: Does LD1117DT30 require any external components for operation? A: Yes, LD1117DT30 requires an input capacitor and an output capacitor for stability and proper operation.

  8. Q: Can LD1117DT30 handle short-circuit conditions? A: Yes, LD1117DT30 has built-in short-circuit protection, which helps to prevent damage in case of a short circuit.

  9. Q: Can LD1117DT30 operate in high-temperature environments? A: Yes, LD1117DT30 has a wide operating temperature range of -40°C to 125°C, making it suitable for various applications.

  10. Q: Is LD1117DT30 available in different package options? A: Yes, LD1117DT30 is available in different package options, such as TO-252, SOT-223, and DPAK, providing flexibility for different PCB layouts and designs.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's recommendations for LD1117DT30.