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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 20QFN
- Series：-
- Mfr：Skyworks Solutions Inc.
- Package：Tape & Reel (TR)
- Type：Controller (PD)
- Number of Channels：1
- Power - Max：15 W
- Internal Switch(s)：Yes
- Auxiliary Sense：No
- Standards：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-A-GMR is a single-channel Powered Device (PD) interface controller compliant with IEEE 802.3af standards. It integrates a DC-DC converter and internal power switch for PoE applications. The device operates within a supply voltage range of 2.8 V to 57 V and supports a maximum current limit of 680 mA. Key electrical parameters include a maximum on-resistance of 1.3 Ohms, a duty cycle of up to 75%, and a quiescent operating current of 2 mA. It functions reliably across an extended temperature range from -40°C to +85°C.
Feature Summary
- Integrates a complete PD interface with an internal DC-DC converter for simplified design
- Complies with IEEE 802.3af Type 1 Powered Device standards
- Includes an internal power switch to reduce external component count
Applications
- IEEE 802.3af compliant network endpoint devices
- Power over Ethernet powered interfaces
- LAN-based powered electronic systems
Procurement Notes
Verify the specific suffix against official Skyworks documentation to confirm exact package and tape/reel specifications. Ensure compatibility with IEEE 802.3af requirements for the target application. Confirm moisture sensitivity level handling procedures during assembly. Check for any obsolescence notices or recommended new designs in manufacturer updates.
Selection Notes
Select this component for applications requiring strict adherence to IEEE 802.3af Type 1 standards. The integrated DC-DC converter and internal switch simplify board layout compared to discrete solutions. Consider the 20-QFN package for surface-mount assembly constraints. Verify that the 680 mA current limit meets the load requirements of the downstream circuitry.
Part Context
This part belongs to the Si3402 series of Power Switch ICs designed for PoE/LAN applications. It serves as a Powered Device controller, distinct from PSE controllers like the SI3482 series. The series focuses on integrating control logic and power conversion for efficient energy delivery over Ethernet cables.
FAQ
What IEEE standard does the SI3402-A-GMR support?
It supports the IEEE 802.3af standard for Powered Devices.
Does the SI3402-A-GMR include an internal switch?
Yes, it features an internal power switch to manage power delivery.
