SI3453B-B02-GMR

Overview

The SI3453B-B02-GMR is a four-channel Power over Ethernet (PoE) controller manufactured by Skyworks Solutions Inc. Designed for IEEE 802.3at and 802.3bt standards, this integrated circuit manages power delivery to powered devices. It features a built-in DC-DC converter capable of delivering up to 60W per channel with high efficiency. The device supports dynamic power management and includes comprehensive protection mechanisms such as over-voltage, over-current, and thermal shutdown. Operating within a temperature range of -40°C to +85°C, it ensures reliable performance in demanding network infrastructure applications.

Feature Summary

• Integrates four independent PoE channels with dedicated DC-DC converters for efficient power delivery
• Supports advanced IEEE 802.3at and 802.3bt standards for high-power application compatibility
• Includes robust protection features against electrical faults and thermal anomalies
• Enables precise dynamic power management through I2C interface control

Applications

• High-density wireless access points requiring substantial power budgets
• IP cameras and video surveillance systems with heating or lighting elements
• Industrial IoT gateways operating in extreme environmental conditions
• Network switches providing inline power to connected peripheral devices

Procurement Notes

Verify the specific suffix B02 to confirm internal configuration and binning parameters prior to ordering. Ensure that the QFN-40 package footprint matches the target PCB layout design constraints. Confirm RoHS compliance status through official manufacturer documentation. Validate that the supply chain source provides genuine components with traceable lot codes. Check for any recent product change notifications that may affect mechanical or electrical specifications.

Selection Notes

Select this component when designing systems requiring multi-channel PoE integration with minimal external bill of materials. Consider its compact QFN-40 package for space-constrained layouts. Evaluate thermal dissipation requirements given the high power density per channel. Compare against single-channel alternatives if lower power consumption is sufficient for the target application. Ensure compatibility with existing I2C bus architectures for configuration management.

Part Context

This part belongs to the SI3453 family of PoE controllers from Skyworks Solutions. It complements other variants like the SI3453D which may offer different pin configurations or feature sets. The family addresses the growing demand for higher power delivery in modern networking equipment. It sits alongside other power management solutions but specializes specifically in multi-channel PoE PD implementation.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-compatibility with legacy designs carefully. No direct equivalent replacements are listed in the source material.