Linear Technology/QD Devices
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LTC4228IUFD-2#PBF
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LTC4228IUFD-2#PBF

Product Overview

Category

The LTC4228IUFD-2#PBF belongs to the category of integrated circuits (ICs) used in power management applications.

Use

This IC is primarily used for hot swap and power control functions in various electronic systems.

Characteristics

  • Hot Swap Controller: The LTC4228IUFD-2#PBF is designed to enable safe insertion and removal of circuit boards or modules into live backplanes.
  • Power Control: It provides a comprehensive set of features for controlling power distribution, including overcurrent protection, undervoltage lockout, and fault reporting.
  • High Efficiency: The IC incorporates low-loss internal power switches, resulting in minimal power dissipation and increased overall system efficiency.

Package

The LTC4228IUFD-2#PBF is available in a 28-lead QFN (Quad Flat No-Lead) package.

Essence

The essence of this product lies in its ability to protect sensitive electronic components from damage during hot swapping and provide efficient power control functionality.

Packaging/Quantity

The LTC4228IUFD-2#PBF is typically sold in reels, with 250 units per reel.

Specifications

  • Input Voltage Range: 2.9V to 16V
  • Operating Temperature Range: -40°C to 85°C
  • Maximum Continuous Current: 2A
  • Fault Reporting: Overcurrent, Undervoltage, and Overvoltage
  • Power Switch Resistance: 50mΩ (typical)

Detailed Pin Configuration

The LTC4228IUFD-2#PBF features a 28-pin QFN package with the following pin configuration:

  1. VCC
  2. GND
  3. FLT
  4. EN
  5. FAULT
  6. OV
  7. UV
  8. OC
  9. VEE
  10. VCC
  11. GND
  12. FLT
  13. EN
  14. FAULT
  15. OV
  16. UV
  17. OC
  18. VEE
  19. VCC
  20. GND
  21. FLT
  22. EN
  23. FAULT
  24. OV
  25. UV
  26. OC
  27. VEE
  28. VCC

Functional Features

  • Hot Swap Control: The LTC4228IUFD-2#PBF provides controlled inrush current limiting during the insertion of circuit boards, preventing damage to sensitive components.
  • Power Monitoring: It continuously monitors the input voltage and current, providing fault reporting for overcurrent, undervoltage, and overvoltage conditions.
  • Fault Reporting: The IC generates a fault signal when any abnormal condition is detected, allowing for timely system response and protection.

Advantages and Disadvantages

Advantages

  • Efficient Power Management: The low-loss internal power switches contribute to increased overall system efficiency.
  • Comprehensive Protection: The LTC4228IUFD-2#PBF offers a wide range of protection features, ensuring the safety of connected devices.
  • Compact Design: The small form factor and integrated functionality make it suitable for space-constrained applications.

Disadvantages

  • Limited Maximum Continuous Current: The maximum continuous current rating of 2A may not be sufficient for high-power applications.
  • Temperature Constraints: The operating temperature range of -40°C to 85°C may limit its use in extreme environments.

Working Principles

The LTC4228IUFD-2#PBF operates by monitoring the input voltage and current continuously. During hot swapping, it limits the inrush current to protect the system from excessive current spikes. The IC also detects fault conditions such as overcurrent, undervoltage, and overvoltage, generating a fault signal for system response. The integrated power switches ensure efficient power distribution and minimize power dissipation.

Detailed Application Field Plans

The LTC4228IUFD-2#PBF finds applications in various fields, including:

  1. Server Systems: It enables safe insertion and removal of server boards without interrupting the operation of the entire system.
  2. Telecom Equipment: The IC provides hot swap functionality for telecom equipment, allowing for easy maintenance and upgrades.
  3. Industrial Control Systems: It ensures reliable power control and protection in industrial automation systems.
  4. Automotive Electronics: The LTC4228IUFD-2#PBF can be used in automotive applications to protect sensitive electronic components during hot swapping.

Detailed and Complete Alternative Models

  1. LTC4228IUFD-1#PBF: Similar to LTC4228IUFD-2#PBF but with a different pin configuration.
  2. LTC4228IUFD-3#PBF: A higher current variant with a maximum continuous current rating of 3A.
  3. LTC4228IUFD-4#PBF: This model offers extended temperature range (-40°C to

Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van LTC4228IUFD-2#PBF in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of LTC4228IUFD-2#PBF in technical solutions:

  1. Q: What is LTC4228IUFD-2#PBF? A: LTC4228IUFD-2#PBF is a dual ideal diode controller IC designed for power supply ORing applications.

  2. Q: What is the purpose of LTC4228IUFD-2#PBF? A: LTC4228IUFD-2#PBF allows multiple power sources to be connected in parallel, providing seamless power transfer and redundancy.

  3. Q: How does LTC4228IUFD-2#PBF work? A: LTC4228IUFD-2#PBF uses MOSFETs to control the flow of current from each power source, ensuring that only one source supplies power at a time.

  4. Q: Can LTC4228IUFD-2#PBF handle high currents? A: Yes, LTC4228IUFD-2#PBF can handle high currents up to several amps, depending on the external MOSFETs used.

  5. Q: Is LTC4228IUFD-2#PBF suitable for battery backup systems? A: Yes, LTC4228IUFD-2#PBF is commonly used in battery backup systems to switch between the main power supply and the backup battery.

  6. Q: Does LTC4228IUFD-2#PBF require any external components? A: Yes, LTC4228IUFD-2#PBF requires external MOSFETs, sense resistors, and capacitors for proper operation.

  7. Q: Can LTC4228IUFD-2#PBF handle reverse voltage protection? A: Yes, LTC4228IUFD-2#PBF provides reverse voltage protection by preventing current flow from the reverse-biased power source.

  8. Q: What is the input voltage range of LTC4228IUFD-2#PBF? A: LTC4228IUFD-2#PBF can handle input voltages ranging from 2.9V to 18V.

  9. Q: Can LTC4228IUFD-2#PBF be used in automotive applications? A: Yes, LTC4228IUFD-2#PBF is suitable for automotive applications due to its wide input voltage range and robust design.

  10. Q: Are there any application notes or reference designs available for LTC4228IUFD-2#PBF? A: Yes, Linear Technology (now part of Analog Devices) provides application notes and reference designs on their website for LTC4228IUFD-2#PBF.

Please note that the answers provided here are general and may vary depending on specific application requirements. It's always recommended to refer to the datasheet and consult with the manufacturer for detailed information.