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L4931CD80-TR
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L4931CD80-TR

Product Overview

Category

L4931CD80-TR 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 100 mA
  • Fixed output voltage of 8.0 V
  • Very low quiescent current
  • Thermal shutdown and short-circuit protection

Package

L4931CD80-TR comes in a small surface-mount SOT-223 package.

Essence

The essence of L4931CD80-TR lies in its ability to provide a stable and regulated output voltage, making it suitable for various electronic applications.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Input Voltage Range: 4.2 V to 20 V
  • Output Voltage: 8.0 V
  • Dropout Voltage: 0.5 V (typical)
  • Quiescent Current: 75 µA (typical)
  • Output Current: Up to 100 mA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

L4931CD80-TR 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 differentials.
  • The fixed output voltage of 8.0 V provides a stable reference for connected components.
  • Very low quiescent current minimizes power consumption when the load is light.
  • Thermal shutdown and short-circuit protection safeguard the regulator and connected circuitry.

Advantages and Disadvantages

Advantages

  • Low dropout voltage allows for efficient regulation.
  • Fixed output voltage simplifies circuit design.
  • Very low quiescent current reduces power consumption.
  • Thermal shutdown and short-circuit protection enhance reliability.

Disadvantages

  • Limited output current of up to 100 mA may not be suitable for high-power applications.
  • Fixed output voltage restricts flexibility in certain designs.

Working Principles

L4931CD80-TR operates based on the principle of linear voltage regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. This ensures that the output voltage remains constant, regardless of variations in the input voltage or load conditions.

Detailed Application Field Plans

L4931CD80-TR finds application in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable audio players - Industrial control systems - Automotive electronics - Communication equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to L4931CD80-TR are: - LM7808: A popular linear voltage regulator with similar specifications and characteristics. - LT1084: A high-current linear voltage regulator capable of delivering up to 5A of output current. - MCP1702: A low-quiescent-current linear voltage regulator suitable for battery-powered applications.

These alternative models provide different features and capabilities, allowing designers to choose the most appropriate option based on their specific requirements.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van L4931CD80-TR in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of L4931CD80-TR in technical solutions:

Q1: What is the L4931CD80-TR? A1: The L4931CD80-TR is a low-dropout voltage regulator IC that provides a fixed output voltage of 3.3V.

Q2: What is the maximum input voltage for the L4931CD80-TR? A2: The maximum input voltage for the L4931CD80-TR is 20V.

Q3: What is the dropout voltage of the L4931CD80-TR? A3: The dropout voltage of the L4931CD80-TR is typically around 0.4V at 150mA load current.

Q4: Can the L4931CD80-TR handle high currents? A4: No, the L4931CD80-TR is designed for low current applications with a maximum output current of 250mA.

Q5: Is the L4931CD80-TR suitable for battery-powered applications? A5: Yes, the L4931CD80-TR is well-suited for battery-powered applications due to its low quiescent current and low dropout voltage.

Q6: Does the L4931CD80-TR require any external components for operation? A6: Yes, the L4931CD80-TR requires an input capacitor and an output capacitor for stability and proper operation.

Q7: Can the L4931CD80-TR tolerate short-circuits or overloads? A7: No, the L4931CD80-TR does not have built-in protection against short-circuits or overloads. External protection circuitry may be required.

Q8: What is the operating temperature range of the L4931CD80-TR? A8: The operating temperature range of the L4931CD80-TR is typically -40°C to +125°C.

Q9: Can the L4931CD80-TR be used in automotive applications? A9: Yes, the L4931CD80-TR is suitable for automotive applications as it meets the AEC-Q100 standard.

Q10: What package does the L4931CD80-TR come in? A10: The L4931CD80-TR is available in a SOT-89 package.

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