Linear Technology/Analog Devices
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LT3959IUHE#TRPBF
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LT3959IUHE#TRPBF

Product Overview

Category

The LT3959IUHE#TRPBF belongs to the category of integrated circuits (ICs).

Use

This IC is primarily used for power management applications.

Characteristics

  • High efficiency
  • Wide input voltage range
  • Adjustable output voltage
  • Current mode control
  • Internal compensation
  • Low quiescent current

Package

The LT3959IUHE#TRPBF is available in a compact and industry-standard 28-lead QFN package.

Essence

The essence of LT3959IUHE#TRPBF lies in its ability to efficiently manage power in various applications, providing adjustable output voltages with high efficiency.

Packaging/Quantity

The LT3959IUHE#TRPBF is typically packaged in reels containing 250 units.

Specifications

  • Input Voltage Range: 4V to 60V
  • Output Voltage Range: 0.8V to 55V
  • Switching Frequency: Up to 2MHz
  • Maximum Continuous Output Current: 3A
  • Quiescent Current: 40μA
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

  1. VIN: Input voltage pin
  2. GND: Ground reference pin
  3. FB: Feedback pin for output voltage regulation
  4. COMP: Compensation pin for stability control
  5. SS/TR: Soft-start/tracking pin
  6. VCC: Supply voltage pin
  7. SYNC: Synchronization pin for external clock
  8. RT/CLKOUT: External resistor or clock output pin
  9. SW: Switch node pin
  10. PGND: Power ground pin
  11. BST: Boost pin for higher output voltage
  12. EN/UVLO: Enable/Undervoltage lockout pin
  13. VOUT: Output voltage pin

Functional Features

  1. Wide Input Voltage Range: The LT3959IUHE#TRPBF can handle input voltages from 4V to 60V, making it suitable for a wide range of applications.
  2. High Efficiency: With its current mode control and internal compensation, this IC achieves high efficiency in power management.
  3. Adjustable Output Voltage: The output voltage can be easily adjusted within the range of 0.8V to 55V, providing flexibility for different system requirements.
  4. Low Quiescent Current: The LT3959IUHE#TRPBF has a low quiescent current of only 40μA, minimizing power consumption during standby or idle modes.

Advantages and Disadvantages

Advantages

  • High efficiency power management
  • Wide input voltage range
  • Adjustable output voltage
  • Compact package size
  • Low quiescent current

Disadvantages

  • Limited maximum continuous output current (3A)
  • Requires external synchronization for higher switching frequencies

Working Principles

The LT3959IUHE#TRPBF operates on the principle of current mode control. It regulates the output voltage by adjusting the duty cycle of the internal switch. The feedback loop compares the actual output voltage with the desired value and adjusts the switch accordingly. This control mechanism ensures stable and efficient power management.

Detailed Application Field Plans

The LT3959IUHE#TRPBF finds applications in various fields, including but not limited to: - Industrial automation - Automotive electronics - Telecommunications - Renewable energy systems - LED lighting - Battery-powered devices

Detailed and Complete Alternative Models

  1. LT3959IUHE#PBF: Similar to LT3959IUHE#TRPBF, but available in a 28-lead plastic TSSOP package.
  2. LT3959IUHE#PBF-ND: Same as LT3959IUHE#PBF, but available in a tube packaging option.
  3. LT3959IUHE#TRMPBF: Similar to LT3959IUHE#TRPBF, but available in a 28-lead QFN package with an exposed pad.

These alternative models offer similar functionality and characteristics, providing options for different packaging preferences.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LT3959IUHE#TRPBF v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LT3959IUHE#TRPBF in technical solutions:

  1. Q: What is the LT3959IUHE#TRPBF? A: The LT3959IUHE#TRPBF is a high voltage, current mode step-down LED driver designed for driving LEDs with a constant current.

  2. Q: What is the input voltage range of the LT3959IUHE#TRPBF? A: The input voltage range of the LT3959IUHE#TRPBF is from 4V to 60V.

  3. Q: How many LEDs can the LT3959IUHE#TRPBF drive? A: The LT3959IUHE#TRPBF can drive up to 8 series-connected LEDs.

  4. Q: What is the maximum output current of the LT3959IUHE#TRPBF? A: The maximum output current of the LT3959IUHE#TRPBF is 1.5A.

  5. Q: Can the LT3959IUHE#TRPBF dim the LEDs? A: Yes, the LT3959IUHE#TRPBF supports PWM dimming of the LEDs.

  6. Q: Does the LT3959IUHE#TRPBF have built-in protection features? A: Yes, the LT3959IUHE#TRPBF has built-in protection features such as overvoltage protection, overcurrent protection, and thermal shutdown.

  7. Q: What is the switching frequency of the LT3959IUHE#TRPBF? A: The switching frequency of the LT3959IUHE#TRPBF can be programmed between 100kHz and 1MHz.

  8. Q: Can the LT3959IUHE#TRPBF operate in a wide temperature range? A: Yes, the LT3959IUHE#TRPBF can operate in a temperature range from -40°C to 125°C.

  9. Q: Is the LT3959IUHE#TRPBF suitable for automotive applications? A: Yes, the LT3959IUHE#TRPBF is suitable for automotive applications as it meets the AEC-Q100 automotive qualification standards.

  10. Q: What package does the LT3959IUHE#TRPBF come in? A: The LT3959IUHE#TRPBF comes in a 16-lead thermally enhanced MSOP package.