Texas Instruments
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LP8543SQE/NOPB
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LP8543SQE/NOPB

Product Overview

Category: Integrated Circuit
Use: LED Driver
Characteristics: High efficiency, compact size, wide input voltage range
Package: 24-pin WQFN
Essence: Power management IC for driving LED backlights in notebooks, monitors, and industrial displays
Packaging/Quantity: Tape & Reel (2500 units)

Specifications

  • Input Voltage Range: 4.5V to 25V
  • Output Voltage Range: Up to 45V
  • Number of Channels: 4
  • Maximum Output Current: 60mA per channel
  • Dimming Control: PWM and I2C

Detailed Pin Configuration

  1. VIN
  2. GND
  3. VOUT1
  4. VOUT2
  5. VOUT3
  6. VOUT4
  7. SDA
  8. SCL
  9. EN
  10. PWM
  11. FAULT
  12. BST
  13. VCC

Functional Features

  • Wide input voltage range for versatile applications
  • Flexible dimming control options
  • Overvoltage and overcurrent protection
  • Internal soft start to reduce inrush current

Advantages and Disadvantages

Advantages: - High efficiency - Compact size - Versatile dimming control - Robust protection features

Disadvantages: - Limited maximum output current per channel - Requires external components for specific applications

Working Principles

The LP8543SQE/NOPB is a power management IC designed to drive LED backlights in various display applications. It utilizes a boost converter to efficiently step up the input voltage to drive the LED strings. The device incorporates internal protection features to ensure safe operation and reliable performance.

Detailed Application Field Plans

The LP8543SQE/NOPB is suitable for a wide range of applications including: - Notebook computers - Monitors - Industrial displays - Automotive infotainment systems

Detailed and Complete Alternative Models

  1. TPS61165DBVR
  2. LM2755SD/NOPB
  3. MAX16834EVKIT+
  4. AS3693B-BWLT-ADJ

In conclusion, the LP8543SQE/NOPB is a highly efficient and compact LED driver IC suitable for driving LED backlights in various display applications. With its wide input voltage range, flexible dimming control, and robust protection features, it offers a reliable solution for powering LED backlights in notebooks, monitors, and industrial displays.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af LP8543SQE/NOPB i tekniske løsninger

  1. What is the maximum input voltage for LP8543SQE/NOPB?
    - The maximum input voltage for LP8543SQE/NOPB is 5.5V.

  2. What is the typical output current capability of LP8543SQE/NOPB?
    - The typical output current capability of LP8543SQE/NOPB is 60mA per channel.

  3. Can LP8543SQE/NOPB be used in automotive applications?
    - Yes, LP8543SQE/NOPB is suitable for automotive applications.

  4. What is the operating temperature range of LP8543SQE/NOPB?
    - The operating temperature range of LP8543SQE/NOPB is -40°C to 105°C.

  5. Is LP8543SQE/NOPB compatible with I2C interface?
    - Yes, LP8543SQE/NOPB is compatible with I2C interface for control and dimming.

  6. Can LP8543SQE/NOPB be used for backlighting LCD displays?
    - Yes, LP8543SQE/NOPB is commonly used for backlighting LCD displays.

  7. What is the package type of LP8543SQE/NOPB?
    - LP8543SQE/NOPB comes in a small 20-pin WQFN package.

  8. Does LP8543SQE/NOPB have built-in over-temperature protection?
    - Yes, LP8543SQE/NOPB includes built-in over-temperature protection.

  9. What is the typical efficiency of LP8543SQE/NOPB?
    - The typical efficiency of LP8543SQE/NOPB is around 90%.

  10. Can LP8543SQE/NOPB be cascaded for higher channel count?
    - Yes, LP8543SQE/NOPB can be cascaded to achieve a higher channel count.