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LP8543SQ/NOPB

LP8543SQ/NOPB

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High-performance, low-dropout voltage regulator
  • Package: 20-pin WQFN package
  • Essence: Efficient power management solution for various electronic devices
  • Packaging/Quantity: Tape and reel packaging, quantity varies based on customer requirements

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 0.8V to 3.6V
  • Maximum Output Current: 300mA
  • Dropout Voltage: 200mV at 300mA
  • Quiescent Current: 45µA (typical)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LP8543SQ/NOPB features a 20-pin WQFN package with the following pin configuration:

  1. EN (Enable)
  2. VIN (Input Voltage)
  3. VOUT (Output Voltage)
  4. GND (Ground)
  5. PG (Power Good)
  6. FB (Feedback)
  7. NC (No Connection)
  8. NC (No Connection)
  9. NC (No Connection)
  10. NC (No Connection)
  11. NC (No Connection)
  12. NC (No Connection)
  13. NC (No Connection)
  14. NC (No Connection)
  15. NC (No Connection)
  16. NC (No Connection)
  17. NC (No Connection)
  18. NC (No Connection)
  19. NC (No Connection)
  20. NC (No Connection)

Functional Features

  • High efficiency and low dropout voltage ensure optimal power conversion.
  • Built-in thermal shutdown and current limit protection mechanisms enhance safety.
  • Power good output signal provides system status indication.
  • Adjustable output voltage allows flexibility in various applications.
  • Low quiescent current minimizes power consumption during standby mode.

Advantages and Disadvantages

Advantages: - High-performance voltage regulation - Compact package size - Wide input and output voltage range - Efficient power management - Built-in protection mechanisms

Disadvantages: - Limited maximum output current (300mA) - No integrated overvoltage protection

Working Principles

The LP8543SQ/NOPB is a low-dropout voltage regulator that regulates the input voltage to a stable output voltage. It utilizes a feedback mechanism to continuously monitor and adjust the output voltage based on the reference voltage. The device operates by comparing the feedback voltage with the reference voltage and adjusting the pass transistor accordingly to maintain the desired output voltage.

Detailed Application Field Plans

The LP8543SQ/NOPB is widely used in various electronic devices that require efficient power management, such as:

  1. Mobile phones
  2. Tablets
  3. Portable media players
  4. Digital cameras
  5. Handheld gaming consoles

Detailed and Complete Alternative Models

  1. LP8544SQ/NOPB
  2. LP8545SQ/NOPB
  3. LP8546SQ/NOPB
  4. LP8547SQ/NOPB
  5. LP8548SQ/NOPB

These alternative models offer similar functionality and characteristics, providing customers with options based on their specific requirements.

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Navedite 10 uobičajenih pitanja i odgovora vezanih uz primjenu LP8543SQ/NOPB u tehničkim rješenjima

  1. What is the maximum input voltage for LP8543SQ/NOPB?
    - The maximum input voltage for LP8543SQ/NOPB is 5.5V.

  2. Can LP8543SQ/NOPB be used to drive RGB LEDs?
    - Yes, LP8543SQ/NOPB can be used to drive RGB LEDs.

  3. What is the typical switching frequency of LP8543SQ/NOPB?
    - The typical switching frequency of LP8543SQ/NOPB is 2.1MHz.

  4. Is LP8543SQ/NOPB suitable for automotive applications?
    - Yes, LP8543SQ/NOPB is suitable for automotive applications.

  5. What is the maximum output current per channel for LP8543SQ/NOPB?
    - The maximum output current per channel for LP8543SQ/NOPB is 60mA.

  6. Can LP8543SQ/NOPB be used in battery-powered devices?
    - Yes, LP8543SQ/NOPB can be used in battery-powered devices.

  7. Does LP8543SQ/NOPB have over-temperature protection?
    - Yes, LP8543SQ/NOPB has over-temperature protection.

  8. What is the thermal shutdown temperature of LP8543SQ/NOPB?
    - The thermal shutdown temperature of LP8543SQ/NOPB is 150°C.

  9. Can LP8543SQ/NOPB be controlled using I2C interface?
    - Yes, LP8543SQ/NOPB can be controlled using I2C interface.

  10. What is the package type of LP8543SQ/NOPB?
    - LP8543SQ/NOPB comes in a WQFN package.