LM5070SDX-50/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Power over Ethernet (PoE) Controller

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

Package: SDX-50 (8-Pin WSON)

Essence: The LM5070SDX-50/NOPB is a PoE controller IC that enables the delivery of power and data over Ethernet cables. It provides a cost-effective solution for implementing PoE in various applications.

Packaging/Quantity: The LM5070SDX-50/NOPB is available in a 8-pin WSON package. It is typically sold in reels containing multiple units.

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 3.3V to 5V
• Maximum Output Current: 600mA
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 100µA (typical)
• Switching Frequency: 200kHz (typical)

Pin Configuration

The LM5070SDX-50/NOPB has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. EN: Enable pin for controlling the device operation
4. FB: Feedback pin for voltage regulation
5. VOUT: Output voltage pin
6. VIN: Input voltage pin
7. NC: No connection
8. NC: No connection

Functional Features

• Integrated high-side switch with low RDS(on)
• Supports both IEEE 802.3af and IEEE 802.3at standards
• Provides accurate current limit and thermal shutdown protection
• Enables detection and classification of powered devices
• Offers adjustable output voltage and current limit

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Compact size for space-constrained applications - Wide input voltage range for compatibility with various power sources - Comprehensive protection features for reliable operation

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

Working Principles

The LM5070SDX-50/NOPB operates by converting the high voltage input from the Ethernet cable into a regulated low voltage output suitable for powering devices. It incorporates a high-side switch, which is controlled by an internal PWM controller. The device also includes circuitry for detection, classification, and protection of powered devices.

Detailed Application Field Plans

The LM5070SDX-50/NOPB is commonly used in the following application fields:

1. IP cameras and surveillance systems
2. Wireless access points
3. VoIP phones
4. Network switches and routers
5. Industrial automation equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM5070SDX-50/NOPB include:

1. TPS23753PWPR
2. LTC4267CGN#PBF
3. MAX5941AESA+
4. SI3402-B-GM

These alternatives can be considered based on specific requirements and design considerations.

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