TPS23521PWR

Product Overview

Category

The TPS23521PWR belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This IC is primarily used for power sourcing equipment (PSE) applications in Power over Ethernet (PoE) systems. It provides a complete solution for implementing IEEE 802.3at-compliant PoE PSE ports.

Characteristics

• Supports both 2-event and 4-event classification modes.
• Offers advanced power management features such as programmable current limit, thermal shutdown, and fault protection.
• Provides high efficiency and low power dissipation.
• Operates over a wide temperature range.
• Designed to meet stringent industry standards.

Package

The TPS23521PWR is available in a small form factor package known as PowerPAD™ MSOP (Micro Small Outline Package). This package offers excellent thermal performance and ease of PCB layout.

Essence

The essence of the TPS23521PWR lies in its ability to efficiently manage power delivery in PoE systems, ensuring reliable and safe operation.

Packaging/Quantity

The TPS23521PWR is typically supplied in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 48V ± 5%
• Maximum Continuous Current: 600mA
• Operating Temperature Range: -40°C to +85°C
• Package Type: PowerPAD MSOP

Detailed Pin Configuration

The TPS23521PWR has a total of 20 pins. The pin configuration is as follows:

1. VDD
2. VDD
3. VDD
4. GND
5. GND
6. GND
7. GND
8. GND
9. GND
10. VDD
11. VDD
12. VDD
13. VDD
14. NC
15. NC
16. NC
17. NC
18. NC
19. NC
20. NC

Functional Features

• Integrated detection and classification circuitry for IEEE 802.3at compliance.
• Programmable current limit to ensure safe power delivery.
• Thermal shutdown protection to prevent overheating.
• Fault protection mechanisms to safeguard against abnormal conditions.
• Flexible control options for system integration.

Advantages and Disadvantages

Advantages

• Supports both 2-event and 4-event classification modes, providing compatibility with a wide range of PoE devices.
• High efficiency and low power dissipation contribute to energy savings.
• Compact PowerPAD MSOP package allows for space-efficient designs.
• Comprehensive protection features enhance system reliability.

Disadvantages

• Limited maximum continuous current of 600mA may not be suitable for high-power applications.
• Requires external components for complete PoE implementation.

Working Principles

The TPS23521PWR operates by receiving power from an external power source and delivering it to the connected PoE devices. It incorporates detection and classification circuitry to identify the power requirements of the connected devices. Based on this information, it regulates the output voltage and current to ensure proper power delivery. The IC also includes various protection mechanisms to prevent damage to the PSE or the connected devices in case of faults or abnormal conditions.

Detailed Application Field Plans

The TPS23521PWR finds application in various PoE-enabled systems, including: 1. IP cameras and surveillance systems 2. Wireless access points 3. VoIP phones 4. Industrial automation equipment 5. Building management systems

Detailed and Complete Alternative Models

1. TPS23753PWPR: This IC offers similar functionality but supports higher continuous current and includes additional features for advanced power management.
2. TPS23861PWR: Designed specifically for high-power PoE applications, this IC provides increased current handling capability and enhanced protection mechanisms.

These alternative models can be considered based on specific application requirements and desired features.

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