Linear Technology/QD Devices
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LT3478IFE

LT3478IFE

Product Overview

Category

The LT3478IFE belongs to the category of integrated circuits (ICs) and is specifically designed as a step-up DC/DC converter.

Use

It is commonly used for boosting input voltage levels in various electronic applications.

Characteristics

  • High efficiency
  • Wide input voltage range
  • Adjustable output voltage
  • Low quiescent current
  • Integrated soft-start
  • Internal compensation

Package

The LT3478IFE comes in a 16-lead plastic TSSOP package.

Essence

The essence of LT3478IFE lies in its ability to efficiently boost input voltages to higher levels, making it suitable for a wide range of applications.

Packaging/Quantity

The LT3478IFE is typically available in reels with a quantity of 2500 units per reel.

Specifications

  • Input Voltage Range: 2.8V to 36V
  • Output Voltage Range: Up to 60V
  • Switching Frequency: Adjustable up to 2MHz
  • Operating Temperature Range: -40°C to 125°C
  • Maximum Duty Cycle: 90%
  • Quiescent Current: 120µA

Detailed Pin Configuration

  1. SW: Switch Node Connection
  2. FB: Feedback Pin
  3. RT/CLK: Oscillator Frequency Set/External Clock Synchronization
  4. VIN: Supply Voltage Input
  5. GND: Ground
  6. SYNC/MODE: Synchronization/MODE Selection
  7. SS: Soft-Start Pin
  8. VOUT: Regulated Output Voltage

Functional Features

  • Wide input voltage range allows for versatile application
  • Adjustable output voltage provides flexibility
  • Integrated soft-start reduces inrush current during startup
  • High efficiency minimizes power loss
  • Internal compensation simplifies design

Advantages and Disadvantages

Advantages

  • High efficiency
  • Wide input voltage range
  • Adjustable output voltage
  • Integrated soft-start
  • Low quiescent current

Disadvantages

  • Limited maximum duty cycle
  • Requires careful PCB layout due to high switching frequency

Working Principles

The LT3478IFE operates by utilizing a high-efficiency monolithic switching regulator architecture to boost input voltages to higher levels. It employs a fixed frequency, current mode control scheme to provide stable and reliable operation across varying load conditions.

Detailed Application Field Plans

The LT3478IFE finds extensive use in the following application fields: - LED lighting - Portable electronics - Industrial power supplies - Automotive systems - Battery-powered devices

Detailed and Complete Alternative Models

Some alternative models to LT3478IFE include: - LT1618 - LT3757 - LT8362 - LM2623

In conclusion, the LT3478IFE is a versatile and efficient step-up DC/DC converter that offers a wide input voltage range, adjustable output voltage, and integrated features for enhanced performance in various electronic applications.

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Énumérez 10 questions et réponses courantes liées à l'application de LT3478IFE dans les solutions techniques

  1. Question: What is the input voltage range for LT3478IFE?
    Answer: The input voltage range for LT3478IFE is 2.8V to 36V.

  2. Question: What is the maximum output current of LT3478IFE?
    Answer: The maximum output current of LT3478IFE is 2A.

  3. Question: Can LT3478IFE be used in automotive applications?
    Answer: Yes, LT3478IFE is suitable for automotive applications.

  4. Question: What is the switching frequency of LT3478IFE?
    Answer: The switching frequency of LT3478IFE is programmable from 200kHz to 2MHz.

  5. Question: Is LT3478IFE suitable for LED driver applications?
    Answer: Yes, LT3478IFE is commonly used in LED driver applications.

  6. Question: Does LT3478IFE have built-in overcurrent protection?
    Answer: Yes, LT3478IFE features built-in overcurrent protection.

  7. Question: What is the typical efficiency of LT3478IFE?
    Answer: The typical efficiency of LT3478IFE is around 90%.

  8. Question: Can LT3478IFE operate in a wide temperature range?
    Answer: Yes, LT3478IFE can operate in a wide temperature range from -40°C to 125°C.

  9. Question: Does LT3478IFE require an external compensation network?
    Answer: No, LT3478IFE does not require an external compensation network.

  10. Question: Is LT3478IFE available in a small package for space-constrained applications?
    Answer: Yes, LT3478IFE is available in a compact 16-lead TSSOP package for space-constrained applications.