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LTC4376IDHD#PBF
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LTC4376IDHD#PBF

Product Overview

  • Category: Integrated Circuit
  • Use: Power Management
  • Characteristics: Overvoltage and Reverse Voltage Protection Controller
  • Package: DFN-12
  • Essence: Provides protection against overvoltage and reverse voltage conditions in power management systems
  • Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Input Voltage Range: -40V to 80V
  • Overvoltage Threshold: Adjustable from 2.5V to 80V
  • Reverse Voltage Threshold: Adjustable from -2.5V to -80V
  • Quiescent Current: 20µA (typical)
  • Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LTC4376IDHD#PBF package consists of 12 pins arranged as follows:

  1. GATE
  2. GND
  3. VCC
  4. VIN
  5. FB
  6. OVSET
  7. REVERSE
  8. UVSET
  9. VOUT
  10. SS
  11. FLT
  12. PGND

Functional Features

  1. Overvoltage Protection: The LTC4376IDHD#PBF monitors the input voltage and shuts off the external MOSFET when it exceeds the set threshold, protecting downstream components.
  2. Reverse Voltage Protection: It also safeguards against reverse voltage conditions, preventing damage to the system.
  3. Adjustable Thresholds: The overvoltage and reverse voltage thresholds can be easily adjusted using external resistors, allowing customization for different applications.
  4. Fast Response Time: The device quickly detects overvoltage or reverse voltage events and reacts within microseconds to protect the system.

Advantages

  • Robust Protection: The LTC4376IDHD#PBF provides reliable protection against overvoltage and reverse voltage conditions, ensuring the longevity of power management systems.
  • Customizable Thresholds: The adjustable thresholds allow flexibility in designing for specific voltage requirements.
  • Compact Package: The DFN-12 package offers a small footprint, making it suitable for space-constrained applications.
  • Low Quiescent Current: The device consumes minimal current during operation, reducing power consumption.

Disadvantages

  • Limited Voltage Range: The input voltage range is limited to -40V to 80V, which may not be suitable for high-voltage applications.
  • External Components Required: To adjust the thresholds, external resistors are needed, adding complexity to the design.

Working Principles

The LTC4376IDHD#PBF utilizes a precision comparator to monitor the input voltage. When the voltage exceeds the set overvoltage threshold, the device turns off the external MOSFET, disconnecting the load from the input source. Similarly, if a reverse voltage condition is detected, the MOSFET is quickly turned off to prevent any damage to the system. The adjustable thresholds allow the device to be tailored to specific voltage requirements.

Application Field Plans

The LTC4376IDHD#PBF is commonly used in various power management applications where protection against overvoltage and reverse voltage is crucial. Some potential application fields include:

  1. Industrial Power Supplies
  2. Automotive Electronics
  3. Telecommunications Equipment
  4. Battery Management Systems
  5. Solar Power Systems

Alternative Models

  1. LTC4366: Overvoltage and Reverse Voltage Protection Controller with Adjustable Thresholds
  2. MAX4376: Overvoltage and Reverse Voltage Protection IC with Fixed Thresholds
  3. TPS2660: Overvoltage and Reverse Voltage Protection Device with Integrated MOSFET

These alternative models offer similar functionalities and can be considered as substitutes for the LTC4376IDHD#PBF depending on specific requirements.

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Liste 10 perguntas e respostas comuns relacionadas à aplicação de LTC4376IDHD#PBF em soluções técnicas

Sure! Here are 10 common questions and answers related to the application of LTC4376IDHD#PBF in technical solutions:

  1. Q: What is LTC4376IDHD#PBF? A: LTC4376IDHD#PBF is a power management IC designed for hot swap applications, providing protection against overcurrent and overvoltage conditions.

  2. Q: What are the key features of LTC4376IDHD#PBF? A: Some key features include adjustable current limit, reverse current blocking, undervoltage lockout, fault flag output, and thermal shutdown.

  3. Q: How does LTC4376IDHD#PBF protect against overcurrent conditions? A: The LTC4376IDHD#PBF monitors the voltage drop across an external sense resistor to detect overcurrent conditions and limits the load current accordingly.

  4. Q: Can LTC4376IDHD#PBF handle high voltages? A: Yes, LTC4376IDHD#PBF can handle input voltages up to 80V, making it suitable for a wide range of applications.

  5. Q: What is reverse current blocking? A: Reverse current blocking prevents current from flowing back into the power source when the load is disconnected or during a fault condition.

  6. Q: How does LTC4376IDHD#PBF provide undervoltage lockout? A: The undervoltage lockout feature ensures that the load is only powered when the input voltage exceeds a certain threshold, preventing operation at low voltages.

  7. Q: What is the fault flag output used for? A: The fault flag output provides a signal indicating the occurrence of a fault condition, allowing for system-level monitoring and diagnostics.

  8. Q: Does LTC4376IDHD#PBF have thermal protection? A: Yes, LTC4376IDHD#PBF includes a thermal shutdown feature that protects the IC from excessive temperature, ensuring safe operation.

  9. Q: Can LTC4376IDHD#PBF be used in high-power applications? A: Yes, LTC4376IDHD#PBF is capable of handling high currents up to 20A, making it suitable for various high-power applications.

  10. Q: What are some typical applications of LTC4376IDHD#PBF? A: LTC4376IDHD#PBF can be used in hot swap boards, redundant power systems, telecom equipment, industrial automation, and other applications requiring reliable power management.

Please note that these answers are general and may vary depending on the specific requirements and implementation of LTC4376IDHD#PBF in different technical solutions.