ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 20QFN
- Series：-
- Mfr：Silicon Labs
- Package：Tube
- Type：Controller (PD), DC/DC
- 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)
Download product information
Overview
The SI3400-GM is a fully integrated Power over Ethernet (PoE) Powered Device (PD) interface and switching regulator compliant with IEEE 802.3af standards. It supports both non-isolated and isolated switching topologies, featuring comprehensive protection circuitry for robust operation. The device integrates a DC/DC converter to manage power delivery efficiently within PoE networks.
Feature Summary
- Fully integrated PD interface and switching regulator
- IEEE 802.3af compliance for standard PoE applications
- Supports both non-isolated and isolated switching topologies
- Comprehensive internal protection circuitry
Applications
- Power over Ethernet powered devices requiring 802.3af compliance
- Network equipment utilizing isolated or non-isolated power architectures
- IoT endpoints needing integrated PoE control and regulation
Procurement Notes
Verify the specific suffix against current Silicon Labs documentation, as package labeling updates may affect part identification. Confirm availability status through authorized distributors, as older revisions may be discontinued. Ensure the component meets current environmental and export classification requirements for your region.
Selection Notes
Select this component when an integrated solution combining PoE detection, classification, and DC/DC conversion is required. It is suitable for designs supporting either isolated or non-isolated transformer configurations. Consider thermal management requirements based on the chosen topology and load conditions.
Part Context
The SI3400-GM belongs to the Si3400 series of PoE controllers from Silicon Labs. It serves as a foundational component for implementing compliant powered devices in Ethernet infrastructure. Related models in the family include variants like the SI3401 and SI3402, which offer similar integration with potential differences in pinout or specific feature sets.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided data. Check for direct equivalents such as the LTC4267 from Linear Technology, but verify compatibility with isolation requirements and protocol support before substitution.
