LM5070SD-50/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Power over Ethernet (PoE) Controller

Characteristics: - High efficiency - Low power consumption - Small form factor - Robust protection features

Package: SD package (8-pin)

Essence: The LM5070SD-50/NOPB is a PoE controller IC designed for use in Power Sourcing Equipment (PSE) applications. It provides the necessary control and power management functions to enable power delivery over Ethernet cables.

Packaging/Quantity: The LM5070SD-50/NOPB is available in an 8-pin SD package. It is typically sold in reels containing multiple units.

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 2.7V to 57V
• Maximum Output Current: 600mA
• Operating Temperature Range: -40°C to +85°C
• Control Interface: I2C

Detailed Pin Configuration

The LM5070SD-50/NOPB has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. EN: Enable pin for device operation
4. I2C_SCL: Serial clock input for I2C communication
5. I2C_SDA: Serial data input/output for I2C communication
6. VOUT: Output voltage pin
7. FB: Feedback pin for output voltage regulation
8. NC: No connection

Functional Features

• Integrated DC-DC converter for efficient power conversion
• Programmable output voltage and current limits
• Overvoltage and overcurrent protection
• Thermal shutdown protection
• I2C interface for control and monitoring

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Flexible output voltage and current settings - Robust protection features ensure safe operation - Compact package size for space-constrained applications

Disadvantages: - Requires external components for complete PoE implementation - Limited maximum output current compared to some other PoE controllers

Working Principles

The LM5070SD-50/NOPB operates by converting the high voltage input from the Ethernet cable into a regulated output voltage suitable for powering connected devices. It uses an integrated DC-DC converter to achieve high efficiency power conversion. The device can be controlled and monitored through the I2C interface, allowing for customization of output voltage and current limits.

Detailed Application Field Plans

The LM5070SD-50/NOPB is commonly used in various Power over Ethernet applications, including: - IP cameras - Wireless access points - VoIP phones - Network switches - Industrial automation equipment

Detailed and Complete Alternative Models

Some alternative models to the LM5070SD-50/NOPB that offer similar functionality include: - LM5070SD-80/NOPB: Higher maximum output current (800mA) - LM5070SD-33/NOPB: Lower input voltage range (18V to 36V) - LM5070SD-ADJ/NOPB: Adjustable output voltage range

These alternative models provide options for different power requirements and design constraints.

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