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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 20QFN
- Series：-
- Mfr：Skyworks Solutions Inc.
- Package：Tray
- Type：Controller (PD), DC/DC
- Number of Channels：1
- Power - Max：15.4 W
- Internal Switch(s)：Yes
- Auxiliary Sense：Yes
- Standards：802.3at (PoE)
- Voltage - Supply：1.5V ~ 57V
- Current - Supply：-
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：20-VFQFN Exposed Pad
- Supplier Device Package：20-QFN (4x4)
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Overview
The SI3404-A-GM is a fully integrated IEEE 802.3at Type 1 compliant Power over Ethernet (PoE) Powered Device (PD) interface and high-efficiency switching regulator. It combines a current-mode DC-DC converter with an integrated hot-swap FET and switching FET, designed for compact footprints. The device supports transformer bias winding and auxiliary adapter capabilities, offering 120 V absolute maximum voltage performance within a 4 mm x 4 mm QFN package.
Feature Summary
- Integrates PoE PD interface and DC-DC converter in a single component
- Complies with IEEE 802.3at Type 1 standards
- Features integrated hot-swap and switching FETs
- Supports transformer bias winding and auxiliary adapters
Applications
- Voice over IP telephones
- Wireless access points
- Network security cameras
- IoT edge devices
Procurement Notes
Verify the specific suffix -A-GM against manufacturer documentation to confirm pinout and electrical characteristics. Ensure compatibility with your target PCB layout, as the component utilizes a compact 4x4 mm QFN package. Confirm RoHS compliance status through official datasheets before finalizing procurement plans.
Selection Notes
Select this component for designs requiring a minimal footprint while maintaining full IEEE 802.3at Type 1 compliance. It is suitable for applications needing integrated power management without external discrete switches. Consider the operating temperature range of -40 to +85 °C for environmental suitability.
Part Context
This part belongs to the Si3404 series from Skyworks Solutions, which focuses on PoE powered device interfaces. It serves as a core solution for networked endpoints that require efficient power delivery and regulation directly from Ethernet cables, replacing multi-component discrete solutions.
Replacement Considerations
Check for direct substitutes like the SI3402-B-GM for lower power requirements or other variants within the Si3404 family. Verify functional equivalence regarding pinouts and regulatory compliance before substitution.
