Linear Technology/QD Devices
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LT4294HDD#TRPBF
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LT4294HDD#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power over Ethernet (PoE) Controller

Characteristics: - High efficiency - Low quiescent current - Wide input voltage range - Supports IEEE 802.3af/at/bt standards - Integrated power MOSFETs - Small package size

Package: 16-Lead Plastic Dual-In-Line Package (PDIP)

Essence: The LT4294HDD#TRPBF is a PoE controller designed to provide power and data transmission over Ethernet cables.

Packaging/Quantity: The LT4294HDD#TRPBF is typically sold in reels of 2500 units.

Specifications

  • Input Voltage Range: 36V to 57V
  • Output Voltage Range: 2.5V to 60V
  • Maximum Output Current: 600mA
  • Quiescent Current: 10µA
  • Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The LT4294HDD#TRPBF has the following pin configuration:

  1. VCC
  2. GND
  3. NC
  4. NC
  5. NC
  6. NC
  7. NC
  8. NC
  9. NC
  10. NC
  11. NC
  12. NC
  13. NC
  14. NC
  15. NC
  16. NC

Functional Features

  • Detection and classification of powered devices
  • Automatic detection of cable length
  • Programmable current limit
  • Overvoltage and overcurrent protection
  • Thermal shutdown protection
  • Fast startup time

Advantages and Disadvantages

Advantages: - High efficiency design reduces power dissipation - Wide input voltage range allows compatibility with various PoE standards - Integrated power MOSFETs simplify the design and reduce external component count

Disadvantages: - Limited maximum output current may not be suitable for high-power applications - PDIP package may not be suitable for space-constrained designs

Working Principles

The LT4294HDD#TRPBF operates by detecting and classifying powered devices connected to the Ethernet cable. It provides the necessary power and data transmission according to the IEEE 802.3af/at/bt standards. The controller incorporates various protection features to ensure safe operation, such as overvoltage, overcurrent, and thermal shutdown protection.

Detailed Application Field Plans

The LT4294HDD#TRPBF is commonly used in the following applications:

  1. IP cameras
  2. Wireless access points
  3. VoIP phones
  4. Network switches
  5. Industrial automation equipment

Detailed and Complete Alternative Models

Some alternative models to the LT4294HDD#TRPBF include:

  1. LT4295HDD#TRPBF
  2. LT4296HDD#TRPBF
  3. LT4297HDD#TRPBF
  4. LT4298HDD#TRPBF
  5. LT4299HDD#TRPBF

These models offer similar functionality and characteristics but may have different specifications or package options.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de LT4294HDD#TRPBF en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of LT4294HDD#TRPBF in technical solutions:

  1. Q: What is LT4294HDD#TRPBF? A: LT4294HDD#TRPBF is a high-power PoE++ PD (Powered Device) controller designed for use in Power over Ethernet (PoE) applications.

  2. Q: What is the maximum power output supported by LT4294HDD#TRPBF? A: LT4294HDD#TRPBF supports up to 90W of power output, making it suitable for high-power devices such as PTZ cameras, access points, and small switches.

  3. Q: Can LT4294HDD#TRPBF be used in both PoE and PoE+ applications? A: Yes, LT4294HDD#TRPBF is backward compatible with both PoE and PoE+ standards, allowing it to work with a wide range of PoE-enabled devices.

  4. Q: Does LT4294HDD#TRPBF support automatic detection and classification of connected devices? A: Yes, LT4294HDD#TRPBF features an integrated signature recognition algorithm that automatically detects and classifies connected devices according to the IEEE 802.3af/at/bt standards.

  5. Q: Can LT4294HDD#TRPBF operate in standalone mode or does it require an external microcontroller? A: LT4294HDD#TRPBF can operate in standalone mode, eliminating the need for an external microcontroller. However, it also provides an I²C interface for advanced control and monitoring if desired.

  6. Q: What are the key protection features offered by LT4294HDD#TRPBF? A: LT4294HDD#TRPBF provides comprehensive protection features such as over-temperature protection, under-voltage lockout, and short-circuit protection to ensure safe and reliable operation.

  7. Q: Can LT4294HDD#TRPBF support multiple PDs simultaneously? A: Yes, LT4294HDD#TRPBF supports multi-port operation, allowing it to power and manage multiple PDs concurrently.

  8. Q: What is the input voltage range supported by LT4294HDD#TRPBF? A: LT4294HDD#TRPBF supports an input voltage range of 36V to 57V, which is compliant with PoE standards.

  9. Q: Does LT4294HDD#TRPBF provide real-time monitoring and reporting of power consumption? A: Yes, LT4294HDD#TRPBF offers accurate real-time monitoring of power consumption through its I²C interface, enabling efficient power management.

  10. Q: Is LT4294HDD#TRPBF suitable for industrial applications? A: Absolutely! LT4294HDD#TRPBF is designed to meet the rigorous requirements of industrial environments, making it ideal for applications in industrial automation, surveillance systems, and more.

Please note that the answers provided here are general and may vary depending on the specific implementation and configuration of LT4294HDD#TRPBF in a given technical solution.