LTC4252A-1CMS#PBF

Product Overview

Category

LTC4252A-1CMS#PBF belongs to the category of power management integrated circuits (PMICs).

Use

This product is primarily used for power sourcing equipment (PSE) applications in Power over Ethernet (PoE) systems.

Characteristics

• Supports IEEE 802.3af-compliant PoE applications.
• Provides a complete solution for PSE implementation.
• Offers advanced power management features.
• Operates with high efficiency and low power dissipation.
• Designed to meet stringent safety requirements.

Package

LTC4252A-1CMS#PBF is available in a compact MSOP-10 package, which ensures space-saving integration into various electronic devices.

Essence

The essence of LTC4252A-1CMS#PBF lies in its ability to efficiently manage power delivery in PoE systems, ensuring reliable operation of connected devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a specified quantity of units per package.

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 44V to 57V
• Maximum Output Current: 400mA
• Operating Temperature Range: -40°C to 85°C
• Power Dissipation: 1.5W (max)

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. VOUT: Output voltage
4. VEE: Negative supply voltage
5. NC: No connection
6. NC: No connection
7. NC: No connection
8. NC: No connection
9. NC: No connection
10. NC: No connection

Functional Features

• Integrated detection and classification functions for PoE applications.
• Programmable current limit and power management features.
• Supports various power-down modes for energy-saving operation.
• Provides fault protection and reporting mechanisms.
• Offers flexible control options through external resistors.

Advantages and Disadvantages

Advantages

• Efficient power management for PoE systems.
• Compact package for space-constrained applications.
• Compliance with IEEE 802.3af standards.
• Advanced power management features.
• Robust fault protection mechanisms.

Disadvantages

• Limited maximum output current (400mA).
• Restricted operating temperature range (-40°C to 85°C).

Working Principles

LTC4252A-1CMS#PBF operates by receiving power from an external source and efficiently delivering it to connected devices in a PoE system. It incorporates detection and classification functions to identify powered devices and allocate appropriate power levels. The integrated power management features allow for programmable current limits, power-down modes, and fault protection mechanisms.

Detailed Application Field Plans

LTC4252A-1CMS#PBF finds extensive application in various PoE-enabled devices, including: - IP cameras - Wireless access points - VoIP phones - Network switches - Industrial automation equipment

Detailed and Complete Alternative Models

1. LTC4267-1IMS#PBF: Similar functionality with enhanced power delivery capabilities.
2. LTC4274A-1IMS#TRPBF: Higher output current capacity with additional diagnostic features.
3. LTC4259A-1IMS#PBF: Integrated hot-swap controller with PoE support.

These alternative models offer similar functionalities to LTC4252A-1CMS#PBF while providing specific enhancements or additional features tailored to different application requirements.

In conclusion, LTC4252A-1CMS#PBF is a power management integrated circuit designed for PoE applications. Its compact size, advanced power management features, and compliance with industry standards make it a reliable choice for various PoE-enabled devices.