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LM27964SQX-A
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LM27964SQX-A

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC for LED Backlighting Applications

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Dimming control capability - Overvoltage and overcurrent protection - Thermal shutdown protection

Package: QFN (Quad Flat No-Lead) package

Essence: The LM27964SQX-A is a power management IC specifically designed for LED backlighting applications. It provides efficient power conversion, adjustable output voltage, and dimming control capability.

Packaging/Quantity: The LM27964SQX-A is available in a QFN package. The quantity per package may vary depending on the supplier.

Specifications

  • Input Voltage Range: 4.5V to 40V
  • Output Voltage Range: 0.8V to 36V
  • Maximum Output Current: 2A
  • Switching Frequency: 1MHz
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LM27964SQX-A has the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. EN: Enable pin
  4. FB: Feedback pin
  5. DIM: Dimming control pin
  6. SW: Switching node pin
  7. VOUT: Output voltage pin

Functional Features

  • High efficiency power conversion
  • Adjustable output voltage for different LED configurations
  • Dimming control capability for brightness adjustment
  • Overvoltage and overcurrent protection for enhanced safety
  • Thermal shutdown protection to prevent overheating

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption - Wide input voltage range allows for versatile applications - Adjustable output voltage accommodates different LED configurations - Dimming control capability enables brightness adjustment - Comprehensive protection features enhance safety

Disadvantages: - Limited maximum output current of 2A may not be suitable for high-power applications - Operating temperature range of -40°C to 125°C may restrict usage in extreme environments

Working Principles

The LM27964SQX-A operates as a buck converter, converting the input voltage to a lower output voltage suitable for LED backlighting. It utilizes a high-frequency switching circuit to efficiently regulate the output voltage. The dimming control feature adjusts the duty cycle of the switching circuit, thereby controlling the brightness of the LEDs.

Detailed Application Field Plans

The LM27964SQX-A is commonly used in various LED backlighting applications, including: 1. LCD monitors and televisions 2. Automotive displays 3. Industrial control panels 4. Portable electronic devices 5. Signage and advertising displays

Detailed and Complete Alternative Models

  1. LM27963SQX-A: Similar to LM27964SQX-A but with a lower maximum output current of 1.5A.
  2. LM27965SQX-A: Similar to LM27964SQX-A but with a higher maximum output current of 3A.
  3. LM27966SQX-A: Similar to LM27964SQX-A but with additional protection features such as reverse polarity protection.

These alternative models offer similar functionality to the LM27964SQX-A but with slight variations in specifications and features.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan LM27964SQX-A dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of LM27964SQX-A in technical solutions:

1. What is LM27964SQX-A? LM27964SQX-A is a voltage regulator IC designed for use in various technical solutions, particularly in power management applications.

2. What is the input voltage range of LM27964SQX-A? The input voltage range of LM27964SQX-A is typically between 2.7V and 5.5V.

3. What is the output voltage range of LM27964SQX-A? LM27964SQX-A can provide an adjustable output voltage ranging from 0.6V to 5.5V.

4. What is the maximum output current of LM27964SQX-A? The maximum output current of LM27964SQX-A is typically around 1A.

5. Can LM27964SQX-A operate in a wide temperature range? Yes, LM27964SQX-A is designed to operate in a wide temperature range, typically from -40°C to 125°C.

6. Does LM27964SQX-A have built-in protection features? Yes, LM27964SQX-A incorporates various protection features such as thermal shutdown, overcurrent protection, and short-circuit protection.

7. Is LM27964SQX-A suitable for battery-powered applications? Yes, LM27964SQX-A is well-suited for battery-powered applications due to its low quiescent current and high efficiency.

8. Can LM27964SQX-A be used in portable electronic devices? Absolutely! LM27964SQX-A's small form factor and low power consumption make it ideal for integration into portable electronic devices.

9. What type of package does LM27964SQX-A come in? LM27964SQX-A is available in a small, thermally-enhanced WQFN package.

10. Are there any application notes or reference designs available for LM27964SQX-A? Yes, the manufacturer provides application notes and reference designs to assist with the implementation of LM27964SQX-A in various technical solutions. These resources can be found on their website or obtained from their technical support team.

Please note that the specific details mentioned above may vary depending on the manufacturer's specifications and revisions of the LM27964SQX-A IC.