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SPX3940AM3-L-1-8
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SPX3940AM3-L-1-8

Product Overview

Category

The SPX3940AM3-L-1-8 belongs to the category of voltage regulators.

Use

It is used to regulate voltage in electronic circuits, ensuring a stable output voltage regardless of input fluctuations.

Characteristics

  • Input Voltage Range: 4.5V to 30V
  • Output Voltage: 1.8V
  • Maximum Output Current: 1A
  • Low Dropout Voltage: 0.5V at 1A
  • Low Quiescent Current: 5mA
  • Thermal Shutdown Protection
  • Short Circuit Protection

Package

The SPX3940AM3-L-1-8 comes in a small surface-mount SOT-223 package.

Essence

The essence of this product lies in its ability to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity

It is typically available in reels containing 2500 units.

Specifications

  • Input Voltage Range: 4.5V to 30V
  • Output Voltage: 1.8V
  • Output Current: 1A
  • Dropout Voltage: 0.5V at 1A
  • Quiescent Current: 5mA
  • Operating Temperature Range: -40°C to 125°C
  • Package Type: SOT-223

Detailed Pin Configuration

The SPX3940AM3-L-1-8 has three pins: 1. Input (Vin) 2. Ground (GND) 3. Output (Vout)

Functional Features

  • Voltage Regulation: Maintains a constant output voltage despite variations in the input voltage.
  • Low Dropout Voltage: Ensures efficient operation even when the input voltage is only slightly higher than the output voltage.
  • Thermal Shutdown Protection: Safeguards the regulator from overheating.
  • Short Circuit Protection: Protects the regulator and the connected circuitry from damage in case of a short circuit.

Advantages and Disadvantages

Advantages

  • Stable Output: Provides a consistent output voltage.
  • Low Dropout Voltage: Suitable for low-power applications.
  • Thermal and Short Circuit Protection: Enhances reliability and safety.

Disadvantages

  • Limited Output Current: Not suitable for high-power applications.
  • SOT-223 Package: May require additional heat sinking for high-power dissipation.

Working Principles

The SPX3940AM3-L-1-8 utilizes a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a constant output voltage. It also incorporates protection features to ensure safe operation under various conditions.

Detailed Application Field Plans

The SPX3940AM3-L-1-8 is commonly used in: - Battery-powered devices - Portable electronics - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models to the SPX3940AM3-L-1-8 include: - LM2940 - LT1086 - ADP3339

In summary, the SPX3940AM3-L-1-8 is a versatile voltage regulator with a focus on stability, efficiency, and protection. Its compact size and robust features make it suitable for a wide range of electronic applications.

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Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem SPX3940AM3-L-1-8 w rozwiązaniach technicznych

  1. What is the input voltage range for SPX3940AM3-L-1-8?

    • The input voltage range for SPX3940AM3-L-1-8 is 4.5V to 7V.

  2. What is the output voltage of SPX3940AM3-L-1-8?

    • The output voltage of SPX3940AM3-L-1-8 is fixed at 1.8V.

  3. What is the maximum output current of SPX3940AM3-L-1-8?

    • The maximum output current of SPX3940AM3-L-1-8 is 1A.

  4. What is the dropout voltage of SPX3940AM3-L-1-8?

    • The dropout voltage of SPX3940AM3-L-1-8 is typically 0.5V at 1A load.

  5. Is SPX3940AM3-L-1-8 suitable for battery-powered applications?

    • Yes, SPX3940AM3-L-1-8 is suitable for battery-powered applications due to its low dropout voltage and low quiescent current.

  6. Does SPX3940AM3-L-1-8 require an external capacitor for stability?

    • Yes, SPX3940AM3-L-1-8 requires an output capacitor for stability, typically in the range of 10μF to 100μF.

  7. What is the operating temperature range of SPX3940AM3-L-1-8?

    • The operating temperature range of SPX3940AM3-L-1-8 is -40°C to 125°C.

  8. Can SPX3940AM3-L-1-8 be used in automotive applications?

    • Yes, SPX3940AM3-L-1-8 is suitable for automotive applications as it meets the AEC-Q100 automotive qualification standards.

  9. Is SPX3940AM3-L-1-8 available in a surface-mount package?

    • Yes, SPX3940AM3-L-1-8 is available in a surface-mount TO-223 package.

  10. What are the typical applications for SPX3940AM3-L-1-8?

    • Typical applications for SPX3940AM3-L-1-8 include post-regulation for switching supplies, battery chargers, and portable devices.