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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 20HTSSOP
- Series：-
- Mfr：STMicroelectronics
- Package：Tray
- Type：Controller (PD), DC/DC
- Number of Channels：1
- Power - Max：25.5 W
- Internal Switch(s)：Both
- Auxiliary Sense：No
- Standards：802.3at (PoE+), 802.3af (PoE)
- Voltage - Supply：-
- Current - Supply：-
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-HTSSOP
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Overview
The PM8803 is a single-channel Power over Ethernet (PoE) controller designed for IEEE 802.3af and 802.3at standards. It integrates both PD (Powered Device) and DC/DC converter functionalities within a single component. The device supports a maximum power output of 25.5 W, enabling efficient power delivery for high-consumption applications. It operates reliably across an extended temperature range from -40°C to +85°C. The controller is housed in a 20-pin HTSSOP package with exposed pad for enhanced thermal performance.
Feature Summary
- Supports IEEE 802.3af and 802.3at PoE standards
- Integrates PD controller and DC/DC converter functions
- Features internal switches for simplified design
Applications
- IP cameras and video surveillance systems
- Wireless access points
- VoIP telephones
- Industrial IoT sensors
Procurement Notes
Verify the specific ordering suffix to confirm packaging type, such as tape and reel or cut tape, as indicated by distributor part numbers. Ensure compatibility with the required PCB footprint for the 20-HTSSOP package. Confirm RoHS compliance status if restricted substances are a constraint for the final assembly process.
Selection Notes
Select this component when a single-chip solution for both classification control and power conversion is required. It is suitable for designs needing support for both legacy 802.3af and higher-power 802.3at protocols. Consider the thermal requirements of the 20-HTSSOP package for high-power dissipation scenarios up to 25.5 W.
Part Context
This part belongs to STMicroelectronics' portfolio of Power over Ethernet controllers. It addresses the need for compact, integrated solutions in networked devices that require reliable power delivery over standard Ethernet cabling without separate management ICs.
Replacement Considerations
Check for direct pin-to-pin replacements within the same product family that may offer updated packaging or minor feature enhancements. Verify electrical compatibility with existing system voltage rails and interface signals before substitution.
