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LM3503SQ-35/NOPB

LM3503SQ-35/NOPB

Product Overview

Category

The LM3503SQ-35/NOPB belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

  • High precision voltage regulation
  • Low dropout voltage
  • Wide input voltage range
  • Adjustable output voltage
  • Current limiting and thermal shutdown protection

Package

The LM3503SQ-35/NOPB comes in a small outline package (SOP) with 8 pins.

Essence

The essence of LM3503SQ-35/NOPB lies in its ability to provide stable and regulated voltage output for various electronic applications.

Packaging/Quantity

The LM3503SQ-35/NOPB is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 1.2V to 3.3V
  • Dropout Voltage: 200mV at 100mA
  • Maximum Output Current: 150mA
  • Quiescent Current: 40µA
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM3503SQ-35/NOPB has the following pin configuration:

  1. VIN (Input Voltage)
  2. GND (Ground)
  3. EN (Enable)
  4. FB (Feedback)
  5. VOUT (Output Voltage)
  6. NC (No Connection)
  7. NC (No Connection)
  8. VREF (Reference Voltage)

Functional Features

  • High Precision Regulation: The LM3503SQ-35/NOPB provides accurate and stable voltage regulation, ensuring reliable performance of connected devices.
  • Low Dropout Voltage: With a low dropout voltage, the regulator can maintain a stable output even when the input voltage is close to the desired output voltage.
  • Wide Input Voltage Range: The LM3503SQ-35/NOPB can accept a wide range of input voltages, making it suitable for various applications.
  • Adjustable Output Voltage: The output voltage can be adjusted within a specified range, allowing flexibility in different circuit requirements.
  • Current Limiting and Thermal Shutdown Protection: The regulator incorporates current limiting and thermal shutdown protection mechanisms to prevent damage due to excessive current or temperature.

Advantages and Disadvantages

Advantages

  • High precision voltage regulation ensures reliable performance.
  • Low dropout voltage allows for efficient power conversion.
  • Wide input voltage range provides versatility in application.
  • Adjustable output voltage accommodates different circuit requirements.
  • Current limiting and thermal shutdown protection enhance safety and reliability.

Disadvantages

  • Limited maximum output current may restrict usage in high-power applications.
  • Quiescent current consumption may impact overall power efficiency.

Working Principles

The LM3503SQ-35/NOPB operates as a linear voltage regulator. It uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage. The regulator utilizes a pass transistor to control the voltage drop across it, ensuring the desired output voltage is maintained.

Detailed Application Field Plans

The LM3503SQ-35/NOPB finds applications in various electronic systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Embedded systems - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM3503SQ-35/NOPB include: - LM317: A popular adjustable voltage regulator with higher output current capability. - LT1084: A low dropout voltage regulator with adjustable output voltage. - TPS7A4700: An ultra-low noise, high PSRR voltage regulator suitable for sensitive applications.

These alternative models can be considered based on specific requirements and design constraints.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af LM3503SQ-35/NOPB i tekniske løsninger

  1. What is the input voltage range of LM3503SQ-35/NOPB?
    - The input voltage range of LM3503SQ-35/NOPB is 4.5V to 36V.

  2. What is the maximum output current of LM3503SQ-35/NOPB?
    - The maximum output current of LM3503SQ-35/NOPB is 3.5A.

  3. Can LM3503SQ-35/NOPB be used for LED lighting applications?
    - Yes, LM3503SQ-35/NOPB is suitable for LED lighting applications.

  4. What is the typical efficiency of LM3503SQ-35/NOPB?
    - The typical efficiency of LM3503SQ-35/NOPB is 95%.

  5. Is thermal shutdown protection available in LM3503SQ-35/NOPB?
    - Yes, LM3503SQ-35/NOPB features thermal shutdown protection.

  6. What is the operating temperature range of LM3503SQ-35/NOPB?
    - The operating temperature range of LM3503SQ-35/NOPB is -40°C to 125°C.

  7. Can LM3503SQ-35/NOPB be used in automotive applications?
    - Yes, LM3503SQ-35/NOPB is suitable for automotive applications.

  8. Does LM3503SQ-35/NOPB require an external compensation network?
    - No, LM3503SQ-35/NOPB has internal compensation.

  9. What is the package type of LM3503SQ-35/NOPB?
    - LM3503SQ-35/NOPB is available in a 16-pin WQFN package.

  10. Is LM3503SQ-35/NOPB RoHS compliant?
    - Yes, LM3503SQ-35/NOPB is RoHS compliant.