Maxim Integrated
Bild kan vara representation.
Se specifikationer för produktinformation.
MAX5974AETE+TG3U
Visa detalj Datablad

MAX5974AETE+TG3U

Product Overview

  • Category: Integrated Circuit
  • Use: Power Management
  • Characteristics: High Efficiency, Low Power Dissipation
  • Package: 16-TQFN (4x4)
  • Essence: Power Over Ethernet (PoE) Controller
  • Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 36V to 57V
  • Output Voltage Range: 2.5V to 14V
  • Maximum Output Current: 600mA
  • Efficiency: Up to 92%
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX5974AETE+TG3U has a total of 16 pins arranged as follows:

  1. VDD
  2. GND
  3. EN
  4. FB
  5. SS
  6. PGND
  7. LX
  8. LX
  9. LX
  10. LX
  11. NC
  12. NC
  13. NC
  14. NC
  15. NC
  16. NC

Functional Features

  • Integrated PoE controller for power management in Ethernet applications.
  • Supports IEEE 802.3af/at standards for Power Over Ethernet.
  • Provides efficient power conversion with low power dissipation.
  • Offers adjustable output voltage and current limit.
  • Includes overvoltage, overcurrent, and thermal protection features.

Advantages and Disadvantages

Advantages

  • High efficiency power conversion reduces energy waste.
  • Compact package size allows for space-saving designs.
  • Adjustable output voltage and current limit provide flexibility.
  • Integrated protection features ensure safe operation.

Disadvantages

  • Limited maximum output current may not be suitable for high-power applications.
  • Requires additional external components for complete PoE implementation.

Working Principles

The MAX5974AETE+TG3U is a Power Over Ethernet (PoE) controller that enables the transmission of power and data over a single Ethernet cable. It integrates various functions required for PoE, including detection, classification, and power management. The device receives power from the Ethernet cable and regulates it to provide a stable output voltage to the connected device. It also incorporates protection features to prevent damage due to overvoltage, overcurrent, and excessive temperature.

Detailed Application Field Plans

The MAX5974AETE+TG3U is commonly used in the following applications:

  1. IP Cameras: Enables power supply and data transmission for network cameras.
  2. Wireless Access Points: Provides power and connectivity for wireless networking devices.
  3. VoIP Phones: Supports Power Over Ethernet functionality for Voice over IP phones.
  4. Network Switches: Facilitates power delivery to Ethernet switches.

Detailed and Complete Alternative Models

  1. MAX5974BETE+TG3U: Similar to MAX5974AETE+TG3U with enhanced features.
  2. TPS23754PWP: Texas Instruments' PoE controller with similar specifications.
  3. LT4276CGN-1: Linear Technology's PoE controller offering higher output current.

These alternative models can be considered based on specific application requirements and design constraints.

Word count: 305 words

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av MAX5974AETE+TG3U i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of MAX5974AETE+TG3U in technical solutions:

  1. Q: What is the MAX5974AETE+TG3U? A: The MAX5974AETE+TG3U is a power management IC (PMIC) designed for use in Power over Ethernet (PoE) applications.

  2. Q: What is Power over Ethernet (PoE)? A: PoE is a technology that allows both power and data to be transmitted over a single Ethernet cable, eliminating the need for separate power cables.

  3. Q: What are the key features of the MAX5974AETE+TG3U? A: The MAX5974AETE+TG3U features integrated power MOSFETs, thermal protection, current limiting, and support for various PoE standards.

  4. Q: What are the typical applications of the MAX5974AETE+TG3U? A: The MAX5974AETE+TG3U is commonly used in IP phones, wireless access points, security cameras, and other network-connected devices that require power over Ethernet.

  5. Q: What PoE standards does the MAX5974AETE+TG3U support? A: The MAX5974AETE+TG3U supports IEEE 802.3af and IEEE 802.3at standards, which provide up to 15.4W and 30W of power, respectively.

  6. Q: How does the MAX5974AETE+TG3U handle thermal protection? A: The MAX5974AETE+TG3U has built-in thermal protection circuitry that monitors the temperature and reduces the power output if it exceeds a certain threshold.

  7. Q: Can the MAX5974AETE+TG3U be used in non-PoE applications? A: Yes, the MAX5974AETE+TG3U can also be used as a general-purpose power management IC in applications that require multiple voltage outputs.

  8. Q: What is the input voltage range of the MAX5974AETE+TG3U? A: The MAX5974AETE+TG3U operates from an input voltage range of 36V to 57V, which is typical for PoE applications.

  9. Q: Does the MAX5974AETE+TG3U require any external components? A: Yes, the MAX5974AETE+TG3U requires external capacitors and resistors for proper operation. The datasheet provides recommended values.

  10. Q: Is the MAX5974AETE+TG3U available in different package options? A: Yes, the MAX5974AETE+TG3U is available in a 16-pin TQFN package, which is compact and suitable for space-constrained designs.

Please note that these answers are general and may vary depending on specific design requirements and application scenarios. It's always recommended to refer to the datasheet and consult with technical experts for accurate information.