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Product Detailed Parameters
- Description：IC POE CNTRL 4 CHANNEL 64HTQFP
- Series：-
- Mfr：Texas Instruments
- Package：Bulk,Tray
- Type：Controller (PSE)
- Number of Channels：4
- Power - Max：25 W
- Internal Switch(s)：Yes
- Auxiliary Sense：No
- Standards：802.3af (PoE)
- Voltage - Supply：21.5V ~ 57V
- Current - Supply：10mA
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：64-PowerTQFP
- Supplier Device Package：64-HTQFP (10x10)
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Overview
The TPS23841PAP is a quad-port Power Sourcing Equipment (PSE) controller compliant with the IEEE 802.3af standard, designed for Ethernet over Power applications. It operates from a single 48V supply and integrates four independent channels within a 64-pin HTQFP package. Key electrical specifications include a maximum current limit of 650 mA per port and a maximum on-resistance of 1.8 ohms. The device supports an operating voltage range of 21.5V to 57V and functions reliably across a temperature range of -40°C to +125°C.
Feature Summary
- Integrates four independent PoE ports with internal switches and detection resistors
- Supports automatic, semi-automatic, and power management modes for flexible operation
- Includes high-resolution 15-bit A/D converters for precise monitoring of voltage, current, resistance, and temperature
Applications
- IEEE 802.3af compliant Power Sourcing Equipment designs
- Quad-port Ethernet switch power management systems
- Industrial networking infrastructure requiring wide temperature operation
Procurement Notes
Verify the specific suffix 'PAP' corresponds to the 64-pin HTQFP package configuration when sourcing. Confirm that the required operational mode aligns with the integrated control features. Ensure compatibility with the 48V input supply architecture. Validate thermal management requirements given the 125°C maximum junction temperature rating.
Selection Notes
Select this component for applications requiring four isolated PoE ports managed by a single controller. It is suitable for designs needing precise current limiting and comprehensive port status monitoring via I2C. Consider the HTQFP package constraints for PCB layout. This part is appropriate where IEEE 802.3af compliance is mandatory.
Part Context
This device belongs to the TPS2384 family of PoE controllers from Texas Instruments. It serves as a central management unit for powering remote devices over Ethernet cabling. The family emphasizes integration to reduce external component count while maintaining strict adherence to legacy PoE standards.
FAQ
Does the TPS23841PAP support IEEE 802.3at?
No, the TPS23841PAP is specifically designed to comply with the IEEE 802.3af standard only.
What is the maximum current limit per port?
The maximum current limit for each port is 650 mA.
