TPS2375DG4

Product Overview

Category

The TPS2375DG4 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) systems, 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

• The TPS2375DG4 is a highly efficient PoE interface controller.
• It supports IEEE 802.3af-compliant powered devices.
• This IC integrates all necessary functions required for PoE applications, including detection, classification, and current limiting.
• It offers advanced features like programmable inrush current control and thermal shutdown protection.

Package and Quantity

The TPS2375DG4 is available in a small outline package (SOP) with 8 pins. It is commonly supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 2.7V to 14V
• Maximum Output Current: 350mA
• Operating Temperature Range: -40°C to +85°C
• Power Dissipation: 1.25W

Pin Configuration

The TPS2375DG4 has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. VPORT: Port voltage output
4. CLASS: Classification resistor connection
5. DETECT: Detection resistor connection
6. ILIM: Current limit setting
7. NC: No connection
8. NC: No connection

Functional Features

• Integrated detection circuitry for identifying powered devices.
• Programmable current limit to protect against overloads.
• Inrush current control to prevent excessive power supply stress during startup.
• Thermal shutdown protection to safeguard the IC from overheating.
• Built-in classification circuitry for efficient power allocation.

Advantages and Disadvantages

Advantages

• High efficiency and reliability in PoE applications.
• Compact package size allows for space-saving designs.
• Advanced features like programmable inrush current control enhance system performance.
• Integrated detection and classification circuits simplify implementation.

Disadvantages

• Limited maximum output current may not be suitable for high-power devices.
• Operating temperature range may restrict usage in extreme environments.
• Requires additional external components for complete PoE system implementation.

Working Principles

The TPS2375DG4 operates by receiving power and data signals through an Ethernet cable. It incorporates a detection circuit that identifies whether a connected device is PoE-compatible. Upon detection, the IC classifies the device based on its power requirements. It then regulates the power supply to deliver the appropriate voltage and current levels to the powered device.

Detailed Application Field Plans

The TPS2375DG4 finds extensive application in various Power over Ethernet systems, including:

1. IP Cameras: Enables easy installation and power supply for surveillance cameras.
2. Wireless Access Points: Provides power and data connectivity for wireless network access points.
3. VoIP Phones: Facilitates the integration of voice communication devices into PoE networks.
4. Network Switches: Supports PoE functionality in network switches for powering connected devices.

Detailed Alternative Models

For those seeking alternative options, the following ICs can be considered:

1. TPS2376DG4: Similar to TPS2375DG4 with higher maximum output current (500mA).
2. TPS23861PWR: Offers enhanced features such as advanced power management and diagnostics.
3. LTC4267CGN: Provides comprehensive PoE functionality with additional monitoring capabilities.

These alternative models offer different specifications and features, allowing users to choose the most suitable option for their specific requirements.

In conclusion, the TPS2375DG4 is a highly efficient PoE interface controller designed for power management applications. Its compact size, integrated functions, and advanced features make it an ideal choice for various PoE systems. However, its limited output current and operating temperature range should be considered when selecting this IC for specific applications.