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LP8551TLX-A/NOPB
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LP8551TLX-A/NOPB

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: LED Driver
  • Characteristics: High Efficiency, Programmable Dimming, Wide Input Voltage Range
  • Package: 20-Pin WQFN
  • Essence: This IC is designed to drive LEDs in various applications, providing efficient and flexible control over the lighting output.
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.5V to 65V
  • Output Current Range: Up to 1.2A
  • Dimming Control: PWM (Pulse Width Modulation)
  • Operating Temperature Range: -40°C to +125°C
  • Protection Features: Overvoltage Protection, Overcurrent Protection, Thermal Shutdown

Pin Configuration

The LP8551TLX-A/NOPB IC has a total of 20 pins. The pin configuration is as follows:

  1. VCC
  2. GND
  3. EN
  4. DIM
  5. FB
  6. ISET
  7. AGND
  8. VIN
  9. SW
  10. LX
  11. PGND
  12. NC
  13. NC
  14. NC
  15. NC
  16. NC
  17. NC
  18. NC
  19. NC
  20. NC

Functional Features

  • Efficient LED driving with high power conversion efficiency
  • Programmable dimming control for precise lighting adjustments
  • Wide input voltage range allows compatibility with various power sources
  • Built-in protection features ensure safe operation and prevent damage to the IC and LEDs
  • Compact package design for space-constrained applications

Advantages and Disadvantages

Advantages: - High efficiency results in energy savings - Programmable dimming allows customization of lighting output - Wide input voltage range provides flexibility in power supply selection - Compact package size enables use in small form factor devices

Disadvantages: - Limited output current range may not be suitable for high-power LED applications - Requires external components for proper operation - Not suitable for applications requiring constant current drive

Working Principles

The LP8551TLX-A/NOPB LED driver IC operates by converting the input voltage to a regulated current source for driving LEDs. It utilizes pulse width modulation (PWM) to control the brightness of the LEDs. The dimming control signal is provided through the DIM pin, allowing precise adjustment of the lighting output.

The IC incorporates protection features such as overvoltage protection, overcurrent protection, and thermal shutdown to ensure safe operation and prevent damage to the IC and LEDs.

Application Field Plans

The LP8551TLX-A/NOPB LED driver IC finds applications in various fields, including:

  1. Automotive Lighting: Provides efficient and adjustable lighting control for automotive interior and exterior lighting systems.
  2. Display Backlighting: Enables uniform and controllable backlighting for LCD displays in consumer electronics devices.
  3. Industrial Lighting: Offers reliable and flexible LED driving solutions for industrial lighting applications.
  4. Signage and Advertising: Allows programmable and energy-efficient lighting control for signage and advertising displays.

Alternative Models

  1. LP8550TLX-A/NOPB: Similar LED driver IC with a lower output current range.
  2. LP8552TLX-A/NOPB: LED driver IC with higher output current capability.
  3. LP8553TLX-A/NOPB: LED driver IC with additional features such as fault detection and diagnostics.

These alternative models provide options with varying specifications and features to suit different application requirements.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi LP8551TLX-A/NOPB dalam penyelesaian teknikal

  1. What is the maximum input voltage for LP8551TLX-A/NOPB?
    - The maximum input voltage for LP8551TLX-A/NOPB is 24V.

  2. What is the typical output current of LP8551TLX-A/NOPB?
    - The typical output current of LP8551TLX-A/NOPB is 85mA per channel.

  3. Can LP8551TLX-A/NOPB be used in automotive applications?
    - Yes, LP8551TLX-A/NOPB is suitable for automotive applications.

  4. What is the thermal shutdown temperature of LP8551TLX-A/NOPB?
    - The thermal shutdown temperature of LP8551TLX-A/NOPB is 150°C.

  5. Is LP8551TLX-A/NOPB compatible with I2C interface?
    - No, LP8551TLX-A/NOPB does not support I2C interface.

  6. What is the dimming control method for LP8551TLX-A/NOPB?
    - LP8551TLX-A/NOPB uses PWM dimming control method.

  7. Can LP8551TLX-A/NOPB drive RGB LEDs?
    - Yes, LP8551TLX-A/NOPB can drive RGB LEDs.

  8. What is the operating temperature range of LP8551TLX-A/NOPB?
    - The operating temperature range of LP8551TLX-A/NOPB is -40°C to 125°C.

  9. Does LP8551TLX-A/NOPB have overvoltage protection?
    - Yes, LP8551TLX-A/NOPB features overvoltage protection.

  10. What package type is LP8551TLX-A/NOPB available in?
    - LP8551TLX-A/NOPB is available in a 20-pin WQFN package.