Monolithic Power Systems Inc.
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MP3389EF-LF
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MP3389EF-LF

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: LED Driver
  • Characteristics: High efficiency, compact size, wide input voltage range
  • Package: QFN (Quad Flat No-Lead)
  • Essence: Power management solution for driving LEDs
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Input Voltage Range: 4.5V to 27V
  • Output Current Range: Up to 1.2A
  • Switching Frequency: Adjustable from 500kHz to 2MHz
  • Dimming Control: Analog/PWM
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MP3389EF-LF has a total of 20 pins arranged as follows:

  1. VIN: Input voltage
  2. GND: Ground
  3. EN: Enable pin
  4. FB: Feedback pin
  5. DIM: Dimming control pin
  6. SW: Switch node connection
  7. LX: Inductor connection
  8. PGND: Power ground
  9. VCC: Internal IC supply voltage
  10. VOUT: Output voltage

And so on...

Functional Features

  • High efficiency conversion
  • Wide input voltage range
  • Adjustable switching frequency
  • Multiple dimming control options
  • Over-temperature protection
  • Short-circuit protection
  • Under-voltage lockout

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Compact size allows for space-constrained applications - Wide input voltage range provides flexibility - Multiple dimming control options for versatile lighting solutions

Disadvantages: - Limited output current range may not be suitable for high-power applications - Requires external components for operation

Working Principles

The MP3389EF-LF is a step-up converter that efficiently drives LEDs. It utilizes a high-frequency switching technique to convert the input voltage to a higher output voltage required by the LEDs. The integrated circuit incorporates various protection features to ensure safe and reliable operation.

Detailed Application Field Plans

The MP3389EF-LF is commonly used in the following applications:

  1. LED lighting fixtures
  2. Backlighting for LCD displays
  3. Automotive lighting systems
  4. Portable electronic devices
  5. Industrial lighting solutions

Alternative Models

Here are some alternative models that can be considered as substitutes for the MP3389EF-LF:

  1. MP3302EF-LF
  2. MP3429EF-LF
  3. LT3476EF-LF
  4. TPS61165EF-LF
  5. BD8389EF-LF

These models offer similar functionality and can be evaluated based on specific requirements.

In conclusion, the MP3389EF-LF is a highly efficient LED driver IC with a wide input voltage range. Its compact size and multiple dimming control options make it suitable for various lighting applications. However, its limited output current range and requirement for external components should be taken into consideration.

Liste 10 perguntas e respostas comuns relacionadas à aplicação de MP3389EF-LF em soluções técnicas

Sure! Here are 10 common questions and answers related to the application of MP3389EF-LF in technical solutions:

  1. Q: What is MP3389EF-LF? A: MP3389EF-LF is a high-efficiency, step-up, white LED driver designed for backlight applications.

  2. Q: What is the input voltage range of MP3389EF-LF? A: The input voltage range of MP3389EF-LF is typically between 2.7V and 5.5V.

  3. Q: What is the maximum output current of MP3389EF-LF? A: The maximum output current of MP3389EF-LF is typically 1.2A.

  4. Q: Can MP3389EF-LF drive multiple LEDs in series? A: Yes, MP3389EF-LF can drive multiple LEDs in series, making it suitable for various backlighting applications.

  5. Q: Does MP3389EF-LF support PWM dimming? A: Yes, MP3389EF-LF supports PWM dimming, allowing precise control over the brightness of the LEDs.

  6. Q: Is MP3389EF-LF compatible with both analog and digital dimming methods? A: Yes, MP3389EF-LF is compatible with both analog and digital dimming methods, providing flexibility in design.

  7. Q: What is the thermal shutdown temperature of MP3389EF-LF? A: The thermal shutdown temperature of MP3389EF-LF is typically around 150°C.

  8. Q: Can MP3389EF-LF operate in a wide temperature range? A: Yes, MP3389EF-LF is designed to operate in a wide temperature range, typically from -40°C to 85°C.

  9. Q: Does MP3389EF-LF have built-in protection features? A: Yes, MP3389EF-LF includes various protection features such as over-temperature protection and over-current protection.

  10. Q: What are some typical applications of MP3389EF-LF? A: MP3389EF-LF is commonly used in applications like LCD backlighting, keypad backlighting, and general LED lighting solutions.

Please note that the answers provided here are general and may vary depending on the specific datasheet and application requirements.