LTC4263CDE-1#PBF

Product Overview

Category

The LTC4263CDE-1#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

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

Characteristics

• The LTC4263CDE-1#PBF is designed to deliver power to Ethernet-powered devices such as IP phones, wireless access points, and network cameras.
• It supports both 10/100Mbps and Gigabit Ethernet data rates.
• This IC integrates all the necessary functions required for a PSE, including detection, classification, current limiting, and fault protection.
• It operates with a wide input voltage range, making it suitable for various PoE applications.
• The LTC4263CDE-1#PBF offers advanced features like programmable inrush current limit, thermal shutdown, and short-circuit protection.

Package and Quantity

The LTC4263CDE-1#PBF is available in a 16-lead plastic dual-in-line package (DIP). It is supplied in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 36V to 57V
• Maximum Output Current: 400mA
• Operating Temperature Range: -40°C to 85°C
• Package Type: 16-Lead Plastic DIP

Pin Configuration

The LTC4263CDE-1#PBF has 16 pins arranged as follows:

Pin 1: VEE Pin 2: VEE Pin 3: NC Pin 4: NC Pin 5: NC Pin 6: NC Pin 7: NC Pin 8: NC Pin 9: NC Pin 10: NC Pin 11: NC Pin 12: NC Pin 13: NC Pin 14: NC Pin 15: VDD Pin 16: VDD

Functional Features

• Integrated detection and classification circuitry for IEEE 802.3af/at-compliant PSE devices.
• Programmable inrush current limit to protect against excessive current during startup.
• Thermal shutdown protection to prevent damage due to overheating.
• Short-circuit protection to safeguard the PSE and powered devices.

Advantages and Disadvantages

Advantages

• Comprehensive solution for implementing PoE PSE devices.
• Supports both 10/100Mbps and Gigabit Ethernet data rates.
• Wide input voltage range allows for versatile application scenarios.
• Advanced features like programmable inrush current limit and thermal shutdown enhance system reliability.

Disadvantages

• Limited maximum output current of 400mA may not be suitable for high-power PoE applications.
• The 16-lead DIP package may not be ideal for space-constrained designs.

Working Principles

The LTC4263CDE-1#PBF operates by detecting and classifying powered devices connected to the PSE. It uses a combination of resistive and signature-based methods to determine the power requirements of the device. Once classified, the IC provides the appropriate power level while monitoring for faults such as short circuits or overloads. It also incorporates various protection mechanisms to ensure safe and reliable operation.

Detailed Application Field Plans

The LTC4263CDE-1#PBF finds applications in a wide range of PoE systems, including:

1. IP Phones: Provides power to VoIP phones, eliminating the need for separate power adapters.
2. Wireless Access Points: Powers Wi-Fi access points for seamless network connectivity.
3. Network Cameras: Enables power supply to IP cameras, simplifying installation and reducing wiring complexity.
4. Industrial Automation: Supports PoE-enabled devices in industrial control systems, facilitating remote monitoring and control.

Detailed and Complete Alternative Models

1. LTC4267CDE-1#PBF: Similar to the LTC4263CDE-1#PBF, but with a higher maximum output current of 600mA.
2. LTC4265CDE-1#PBF: Offers additional features like programmable undervoltage lockout and adjustable current limit.

These alternative models provide options for different power requirements and enhanced functionality within the same product category.

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