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LD1117V25
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LD1117V25

Product Overview

Category

The LD1117V25 belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

  • Low dropout voltage
  • Output current up to 800 mA
  • Fixed output voltage of 2.5 V
  • Thermal overload protection
  • Short-circuit current limiting

Package

The LD1117V25 is available in a TO-220 package.

Essence

The essence of LD1117V25 lies in its ability to provide a stable and regulated output voltage.

Packaging/Quantity

The LD1117V25 is typically sold in reels or tubes, with quantities varying based on the manufacturer's specifications.

Specifications

  • Input Voltage Range: 4.75 V to 15 V
  • Output Voltage: 2.5 V
  • Output Current: Up to 800 mA
  • Dropout Voltage: 1.2 V (typical)
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD1117V25 has three pins:

  1. Input (VIN): This pin is connected to 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.

Functional Features

  • Low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
  • Thermal overload protection prevents damage due to excessive heat.
  • Short-circuit current limiting protects the regulator and the connected circuitry from damage in case of a short circuit.

Advantages and Disadvantages

Advantages

  • Stable and regulated output voltage.
  • Wide input voltage range.
  • High output current capability.
  • Thermal overload protection.
  • Short-circuit current limiting.

Disadvantages

  • Dropout voltage of 1.2 V may limit its use in applications with low input voltages.

Working Principles

The LD1117V25 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the output voltage to a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The LD1117V25 can be used in various applications, including but not limited to: - Power supplies for microcontrollers and other digital ICs. - Battery-powered devices requiring a stable voltage source. - Automotive electronics. - Industrial control systems. - Audio amplifiers.

Detailed and Complete Alternative Models

Some alternative models to LD1117V25 include: - LM1117: Similar specifications and pin configuration, available in different fixed output voltages. - LT1086: Higher output current capability, adjustable output voltage. - LDO50V: Lower dropout voltage, suitable for low input voltage applications.

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

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技術ソリューションにおける LD1117V25 の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of LD1117V25 in technical solutions:

  1. Q: What is LD1117V25? A: LD1117V25 is a low dropout voltage regulator that provides a fixed output voltage of 2.5V.

  2. Q: What is the maximum input voltage for LD1117V25? A: The maximum input voltage for LD1117V25 is typically around 15V, but it can handle up to 20V in some cases.

  3. Q: What is the dropout voltage of LD1117V25? A: The dropout voltage of LD1117V25 is typically around 1.1V at a load current of 800mA.

  4. Q: Can LD1117V25 be used to regulate higher voltages? A: No, LD1117V25 is specifically designed to regulate voltages down to 2.5V. It cannot be used to regulate higher voltages.

  5. Q: What is the maximum output current of LD1117V25? A: The maximum output current of LD1117V25 is 800mA. Exceeding this limit may cause the regulator to overheat or fail.

  6. Q: Is LD1117V25 suitable for battery-powered applications? A: Yes, LD1117V25 is commonly used in battery-powered applications due to its low dropout voltage and low quiescent current.

  7. Q: Does LD1117V25 require any external components for operation? A: Yes, LD1117V25 requires an input capacitor and an output capacitor for stability and proper operation. Refer to the datasheet for recommended values.

  8. Q: Can LD1117V25 handle short-circuit conditions? A: Yes, LD1117V25 has built-in short-circuit protection. It will limit the output current to a safe level in case of a short circuit.

  9. Q: Can LD1117V25 be used in automotive applications? A: Yes, LD1117V25 is suitable for automotive applications as it can handle the wide input voltage range typically found in automotive systems.

  10. Q: Are there any temperature considerations for LD1117V25? A: Yes, LD1117V25 has a specified operating temperature range. It is important to ensure that the regulator stays within this range to maintain proper functionality and reliability.

Please note that these answers are general and may vary depending on the specific application and datasheet specifications of LD1117V25.