LT4275BIMS#PBF

Product Overview

Category

LT4275BIMS#PBF belongs to the category of Power over Ethernet (PoE) Controllers.

Use

The LT4275BIMS#PBF is used for controlling and managing power delivery in PoE systems. It provides a complete solution for implementing IEEE 802.3at Type 1 and Type 2 compliant Power Sourcing Equipment (PSE).

Characteristics

• Supports both 2-pair and 4-pair power delivery.
• Integrated detection, classification, and current limit functions.
• Provides accurate load current measurement.
• Offers programmable current limit and inrush control.
• Supports advanced power management features.

Package

LT4275BIMS#PBF comes in a small MSOP-16 package.

Essence

The essence of LT4275BIMS#PBF lies in its ability to efficiently deliver power over Ethernet connections while adhering to industry standards.

Packaging/Quantity

The LT4275BIMS#PBF is typically packaged in reels and available in quantities of 2500 units per reel.

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 44V to 57V
• Maximum Output Current: 600mA
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 94%
• Quiescent Current: 100µA

Detailed Pin Configuration

1. VDD: Power supply input
2. VEE: Negative power supply input
3. MDI: Mode input pin
4. CLASS: Classification resistor input
5. ILIM: Current limit programming pin
6. VPORT: Port voltage output
7. VPORT: Port voltage output
8. GND: Ground
9. GND: Ground
10. VEE: Negative power supply input
11. MDI: Mode input pin
12. CLASS: Classification resistor input
13. ILIM: Current limit programming pin
14. VPORT: Port voltage output
15. VPORT: Port voltage output
16. VDD: Power supply input

Functional Features

• Integrated detection and classification functions enable automatic identification of connected devices.
• Accurate load current measurement allows precise power delivery control.
• Programmable current limit and inrush control ensure safe operation.
• Advanced power management features optimize power efficiency.

Advantages and Disadvantages

Advantages

• Supports both 2-pair and 4-pair power delivery, providing flexibility in PoE system design.
• High efficiency up to 94% reduces power losses and improves overall system performance.
• Comprehensive power management features enhance control and reliability.

Disadvantages

• Limited maximum output current of 600mA may not be suitable for high-power applications.
• Operating temperature range of -40°C to 85°C may restrict usage in extreme environments.

Working Principles

LT4275BIMS#PBF operates by detecting and classifying connected devices using the CLASS pin. It then provides the appropriate power level based on the device's requirements. The integrated current limit function ensures that the power delivery remains within safe limits. The device also incorporates advanced power management techniques to optimize efficiency and minimize power losses.

Detailed Application Field Plans

The LT4275BIMS#PBF is widely used in various applications, including: - IP cameras and surveillance systems - Wireless access points - VoIP phones - Industrial automation equipment - Building management systems

Detailed and Complete Alternative Models

1. LT4276BIMS#PBF: Similar to LT4275BIMS#PBF with extended operating temperature range (-40°C to 105°C).
2. LT4277BIMS#PBF: Higher maximum output current of 800mA, suitable for higher-power applications.
3. LT4278BIMS#PBF: Provides additional features such as advanced power management algorithms and diagnostics.

These alternative models offer similar functionality to LT4275BIMS#PBF but with specific differences to cater to different application requirements.

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