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LTC4380CDD-4#PBF
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LTC4380CDD-4#PBF

Introduction

The LTC4380CDD-4#PBF is a high voltage ideal diode-OR controller designed for protecting power sources from reverse polarity and overvoltage conditions. This device is commonly used in various electronic systems to ensure seamless power supply management and protection.

Basic Information Overview

  • Category: Power Management IC
  • Use: Reverse Polarity Protection and Overvoltage Protection
  • Characteristics: High Voltage Operation, Low Quiescent Current, Fast Response Time
  • Package: 8-Lead DFN (3mm x 3mm)
  • Essence: Ideal Diode-OR Controller
  • Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 2.5V to 60V
  • Operating Temperature Range: -40°C to 125°C
  • Quiescent Current: 20µA
  • Reverse Input Voltage: -60V
  • Overvoltage Lockout Threshold: Adjustable

Detailed Pin Configuration

  1. GATE1: Gate of MOSFET 1
  2. SOURCE1: Source of MOSFET 1
  3. GATE2: Gate of MOSFET 2
  4. SOURCE2: Source of MOSFET 2
  5. VCC: Supply Voltage
  6. FLT: Fault Indicator
  7. OVLO: Overvoltage Lockout
  8. GND: Ground

Functional Features

  • Ideal Diode-OR Functionality: Allows seamless power source switchover without reverse current flow.
  • Fast Response Time: Ensures rapid protection against overvoltage and reverse polarity events.
  • Adjustable Overvoltage Lockout: Provides flexibility in setting the threshold for overvoltage protection.

Advantages and Disadvantages

Advantages

  • Efficient power source management
  • Fast and reliable protection against reverse polarity and overvoltage
  • Low quiescent current for minimal power consumption

Disadvantages

  • Requires external MOSFETs for implementation
  • Limited to a maximum input voltage of 60V

Working Principles

The LTC4380CDD-4#PBF operates by controlling the gates of external N-channel MOSFETs to emulate an ideal diode-OR function. When one power source fails or experiences an overvoltage condition, the controller rapidly switches to the alternate power source, preventing any reverse current flow and protecting downstream circuitry.

Detailed Application Field Plans

The LTC4380CDD-4#PBF finds extensive application in various fields including: - Automotive Electronics - Industrial Control Systems - Telecommunications Equipment - Battery Management Systems - Power Distribution Units

Detailed and Complete Alternative Models

Some alternative models to LTC4380CDD-4#PBF include: - LTC4359: High Voltage Surge Stopper with Ideal Diode Controller - LT4363: High Voltage Surge Stopper with Overvoltage Protection

In conclusion, the LTC4380CDD-4#PBF serves as a crucial component in electronic systems requiring robust reverse polarity and overvoltage protection, offering efficient power management and reliable safeguarding of sensitive circuitry.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi LTC4380CDD-4#PBF dalam penyelesaian teknikal

  1. What is the LTC4380CDD-4#PBF?

    • The LTC4380CDD-4#PBF is a dual ideal diode controller designed to drive two external N-channel MOSFETs to replace diode rectifiers in power supply ORing applications.

  2. What are the key features of LTC4380CDD-4#PBF?

    • Key features include low loss replacement for power Schottky diodes, wide input voltage range, adjustable turn-on voltage, and thermal protection.

  3. How does LTC4380CDD-4#PBF improve power supply efficiency?

    • By using external N-channel MOSFETs, LTC4380CDD-4#PBF reduces power loss compared to traditional diode rectifiers, leading to improved overall power supply efficiency.

  4. What are the typical applications of LTC4380CDD-4#PBF?

    • Typical applications include redundant power systems, hot swap boards, and battery backup systems where seamless switchover between power sources is required.

  5. What is the input voltage range of LTC4380CDD-4#PBF?

    • The input voltage range is from 9V to 72V, making it suitable for a wide range of power supply applications.

  6. How can the turn-on voltage be adjusted in LTC4380CDD-4#PBF?

    • The turn-on voltage can be adjusted using an external resistor divider network, allowing flexibility in setting the desired turn-on threshold.

  7. Does LTC4380CDD-4#PBF provide any protection features?

    • Yes, LTC4380CDD-4#PBF includes thermal protection to safeguard against overtemperature conditions, ensuring reliable operation.

  8. Can LTC4380CDD-4#PBF be used in parallel for higher current applications?

    • Yes, multiple LTC4380CDD-4#PBF devices can be used in parallel to handle higher current requirements by ORing multiple power sources.

  9. What are the advantages of using LTC4380CDD-4#PBF over traditional diode rectifiers?

    • The advantages include lower power loss, improved efficiency, and the ability to customize turn-on voltage, providing greater control over power supply management.

  10. Where can I find detailed technical information and application notes for LTC4380CDD-4#PBF?

    • Detailed technical information and application notes can be found in the product datasheet and on Analog Devices' website.