Overview
The Skyworks Solutions SI3402-B-GMR is a fully-integrated Power-over-Ethernet (PoE) powered device (PD) controller designed to comply with IEEE 802.3at (PoE+) and 802.3af (PoE) standards. This component integrates all necessary power management and control functions, making it an efficient solution for various PoE applications. The SI3402-B-GMR converts the high voltage supplied over the Ethernet connection into a regulated, low-voltage output supply, minimizing the solution footprint and reducing external component costs.
Key Specifications
| Parameter | Value |
|---|---|
| Category | Integrated Circuits (ICs)/Power Over Ethernet (PoE) Controllers |
| Product Status | Active |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 20-VQFN Exposed Pad |
| Current - Supply | 2mA |
| Type | Controller (PD), DC/DC |
| Power - Max | 17 W |
| Number of Channels | 1 |
| Supplier Device Package | 20-QFN (5x5) |
| Internal Switch(s) | Yes |
| Standards | 802.3at (PoE+), 802.3af (PoE) |
| Voltage - Supply | 2.8V ~ 57V |
| Auxiliary Sense | No |
| MSL Rating | 3 (168 Hours, 30°C/60%RH) |
| US ECCN | EAR99 |
| HTS US | 8542.39.0001 |
| REACH Status | REACH is not affected |
| EU RoHS Status | RoHS3 (EU 2015/863) |
| China RoHS Status | Green Symbol: Green and environmentally friendly product |
Key Features
- Fully-integrated IEEE 802.3-compliant PoE PD interface and low-EMI switching regulator.
- Includes diode bridges, transient voltage surge suppressor, detection circuit, classification current source, and dual-level hotswap current limiting switch.
- Direct connection to the RJ-45 connector, simplifying system design and enhancing reliability and protection.
- Requires only four standard external components (detection resistor, optional classification resistor, load capacitor, and input capacitor).
- Integrated pulse-width modulated switching regulator with controller and power FET, optimized for high efficiency and reliability.
- Thermal overload protection to prevent on-chip power MOSFETs from exceeding safe operating ranges.
- Dual input current limits and switcher turn-on functionality for controlled startup and fault protection.
Applications
The Skyworks Solutions SI3402-B-GMR is suitable for a variety of Power-over-Ethernet (PoE) applications, including:
- IP Phones and Video Phones
- Wireless Access Points (WAPs) and Routers
- Security Cameras and Surveillance Systems
- Network Attached Storage (NAS) Devices
- Industrial Control Systems and IoT Devices
Q & A
- What is the primary function of the SI3402-B-GMR?
The primary function of the SI3402-B-GMR is to act as a fully-integrated Power-over-Ethernet (PoE) powered device (PD) controller, converting high voltage from the Ethernet connection into a regulated low-voltage output supply. - What standards does the SI3402-B-GMR comply with?
The SI3402-B-GMR complies with IEEE 802.3at (PoE+) and 802.3af (PoE) standards. - What is the operating temperature range of the SI3402-B-GMR?
The operating temperature range of the SI3402-B-GMR is -40°C to 85°C. - What type of package does the SI3402-B-GMR use?
The SI3402-B-GMR uses a 20-VQFN Exposed Pad package. - How many external components are required for a fully IEEE 802.3-compliant interface?
Only four standard external components are required: detection resistor, optional classification resistor, load capacitor, and input capacitor. - What is the maximum power handling capability of the SI3402-B-GMR?
The SI3402-B-GMR can handle up to 17 W of power. - Does the SI3402-B-GMR have internal switches?
Yes, the SI3402-B-GMR has internal switches. - What is the frequency of the switching regulator in the SI3402-B-GMR?
The switching regulator operates at a frequency of 350 kHz. - Is the SI3402-B-GMR RoHS compliant?
Yes, the SI3402-B-GMR is RoHS3 (EU 2015/863) compliant. - How can I obtain detailed information about the SI3402-B-GMR, such as application notes and datasheets?
You can find detailed information, including application notes and datasheets, on the official Skyworks Solutions website or through authorized distributors like Dasenic Electronics and Mouser Electronics.
