SY28902FBC (SQ24902FBC)

IEEE 802.3bt PD Interface Controller

SY28902FBC IEEE 802.3bt PD Interface Controller Datasheet

Parameters
Features
Description

Part number	SY28902FBC
PoE standards	af/at/bt
Vin (min) (V)	9
Vin (max) (V)	57
PD (max)(W)	<71W
Ron (typ) (mΩ)
Power conversion FETs integrated
Breakdown voltage (V)
Features	Signature resistor,Five-event classification
Package	MSOP10
Operating temperature range(°C)	-40 to 125
Functional safety category

IEEE 802.3af/at/bt Powered Device (PD) Solution for Type 1-4 PoE Applications
Supports up to 71.3W PDs
Supports up to 5-Event Classification Sensing
100V Robust Surge Protection (Abs. Max.)
Integrated Signature Resistor
Thermal Shutdown Protection
External Hot-swap N-Channel MOSFET for Lowest Power Dissipation and Highest System Efficiency
Configurable AUX Power Support as Low as 9V
–40℃ to 125℃Junction Temperature Range

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Evaluation Board

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Photo of evaluation board
Photo of evaluation board

EVB_SY28902FBC

The EVB_SY28902FBC is intended for evaulating the IEEE 802.3af/at/bt-compliant powered device (PD) interface controller SY28902FBC.

Technical Documentation

Title	Date
Silergy_Catalog_Q2_2026	2026-06-12