TPS2379DDAR

Product Overview

Category

The TPS2379DDAR belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is primarily used in power over Ethernet (PoE) applications, where it enables the delivery of both data and power over a single Ethernet cable. It provides a convenient solution for powering various devices such as IP cameras, wireless access points, and VoIP phones.

Characteristics

• Package: The TPS2379DDAR is available in a small outline package (SOP) with 8 pins.
• Essence: This IC integrates multiple functions required for PoE applications, including detection, classification, and power management.
• Packaging/Quantity: The TPS2379DDAR is typically sold in reels, with each reel containing a specific quantity of ICs.

Specifications

The TPS2379DDAR offers the following specifications:

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 3.3V to 5V
• Maximum Output Current: 350mA
• Operating Temperature Range: -40°C to +85°C
• Power Dissipation: 1.2W

Detailed Pin Configuration

The TPS2379DDAR features the following pin configuration:

1. VDD: Power supply input pin.
2. GND: Ground reference pin.
3. VSS: Negative voltage supply pin.
4. VOUT: Output voltage pin.
5. CLASS: Classification resistor connection pin.
6. DETECT: Detection resistor connection pin.
7. ENABLE: Enable control pin.
8. NC: No connection pin.

Functional Features

The TPS2379DDAR offers the following functional features:

• Integrated detection and classification: The IC can automatically detect and classify connected devices based on their power requirements.
• Efficient power management: It provides a regulated output voltage to the connected device, ensuring stable and reliable operation.
• Overcurrent and overtemperature protection: The IC incorporates built-in protection mechanisms to safeguard against excessive current or temperature conditions.

Advantages and Disadvantages

Advantages

• Simplifies PoE implementation: The TPS2379DDAR eliminates the need for separate power cables, reducing installation complexity.
• Cost-effective solution: By combining multiple functions into a single IC, it reduces component count and overall system cost.
• Enhanced reliability: The IC's protection features help prevent damage to connected devices in case of faults or abnormal operating conditions.

Disadvantages

• Limited output current: With a maximum output current of 350mA, the TPS2379DDAR may not be suitable for high-power applications.
• Temperature limitations: The IC has an operating temperature range of -40°C to +85°C, which may restrict its use in extreme environments.

Working Principles

The TPS2379DDAR operates based on the principles of power over Ethernet. It utilizes the existing Ethernet infrastructure to deliver both data and power to connected devices. The IC detects the presence of a compatible device, classifies its power requirements, and then regulates the output voltage accordingly. This ensures that the connected device receives the appropriate power supply without any additional wiring.

Detailed Application Field Plans

The TPS2379DDAR finds extensive application in various fields, including:

1. IP Cameras: It powers IP cameras, eliminating the need for separate power cables and simplifying installation.
2. Wireless Access Points: The IC enables the deployment of wireless access points in locations where power outlets are not readily available.
3. VoIP Phones: It provides power to VoIP phones, enabling seamless communication without the need for external power adapters.

Detailed and Complete Alternative Models

Some alternative models to the TPS2379DDAR include:

1. TPS2378DDAR: Similar to the TPS2379DDAR, this IC offers a lower output current but at a reduced cost.
2. TPS23861PWR: This IC provides higher output current capabilities, making it suitable for high-power PoE applications.
3. LTC4267CGN#PBF: Another alternative with advanced features such as integrated surge protection and extended temperature range.

In conclusion, the TPS2379DDAR is an integrated circuit designed for power management in PoE applications. It offers various functional features, advantages, and disadvantages, making it suitable for a wide range of applications. Alternative models provide options with different specifications and capabilities to cater to specific requirements.