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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 20QFN
- Series：-
- Mfr：Skyworks Solutions Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Controller (PD), DC/DC
- Number of Channels：1
- Power - Max：15 W
- Internal Switch(s)：Yes
- Auxiliary Sense：No
- Standards：802.3at (PoE+), 802.3af (PoE)
- Voltage - Supply：2.8V ~ 57V
- Current - Supply：2mA
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：20-VQFN Exposed Pad
- Supplier Device Package：20-QFN (5x5)
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Overview
The SI3402-C-GMR is a single-channel Power over Ethernet (PoE) Powered Device controller and DC-DC converter compliant with IEEE 802.3af and 802.3at standards. It operates within a supply voltage range of 2.8 V to 57 V and supports a maximum output power of 15 W. The device features an internal switch with a maximum on-resistance of 1.3 Ohms and includes current limiting capabilities up to 680 mA. Designed for surface-mount installation, it utilizes a 20-QFN package measuring 5x5 mm. The component functions reliably across an operating temperature range from -40°C to +85°C.
Feature Summary
- Integrates PoE interface logic with a synchronous DC-DC converter for efficient power delivery
- Supports both IEEE 802.3af and 802.3at Powered Device classifications
- Includes internal high-side switch for direct load connection
Applications
- IEEE 802.3af Powered Device implementations
- IEEE 802.3at Powered Device implementations
- Network endpoint devices requiring integrated PoE reception
Procurement Notes
Verify the specific suffix 'GMR' against the manufacturer's official documentation to confirm tape-and-reel packaging specifications. Ensure compatibility with RoHS3 requirements as indicated in public datasheets. Confirm that the 20-QFN footprint matches the target PCB design constraints before procurement.
Selection Notes
Select this component for designs requiring compliance with both 802.3af and 802.3at standards in a compact form factor. The integrated DC-DC converter reduces external component count compared to discrete solutions. Verify that the 2.8 V to 57 V input range aligns with the expected PoE port voltage variations in the target application environment.
Part Context
This part belongs to the Si3402 series of power management ICs developed by Skyworks Solutions Inc. The series focuses on providing integrated solutions for Power over Ethernet applications, combining classification, detection, and conversion functionalities into a single chip to simplify system design for networked endpoints.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult official Skyworks documentation for potential cross-reference options or updated revisions.
