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Product Detailed Parameters
- Description：LTC4290 - POE 13W 8-PORT PSE CON
- Series：*
- Mfr：Linear Technology
- Package：Bulk
- Type：-
- Number of Channels：-
- Power - Max：-
- Internal Switch(s)：-
- Auxiliary Sense：-
- Standards：-
- Voltage - Supply：-
- Current - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
Download product information
Overview
The LTC4290CIUJ#TRPBF is a single-port Power Sourcing Equipment (PSE) controller compliant with IEEE 802.3at and 802.3bt standards. It supports Type 3 and Type 4 power delivery, providing up to 71.3W of output power per port. The device integrates a low on-resistance power switch and operates from a 3.3V supply voltage. It features a digital control interface for host communication and includes comprehensive protection mechanisms such as over-voltage, over-current, and thermal shutdown. The component is housed in a 24-lead QFN package.
Feature Summary
- Supports IEEE 802.3at and 802.3bt PoE standards
- Integrates low RDS(ON) power switch
- Digital control host interface
- Comprehensive port protection
Applications
- PoE switches
- PoE midspans
- Access points
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the 'C' grade temperature range matches your design requirements. Ensure the 24-lead QFN footprint aligns with your PCB layout. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing processes.
Selection Notes
Select this component for applications requiring high-power PoE delivery in a compact form factor. It is suitable for designs needing integrated switching capabilities without external MOSFETs. Consider the thermal performance of the QFN package relative to your enclosure constraints. Verify that the digital interface protocol matches your system's microcontroller or processor.
Part Context
This part belongs to the LTC429x family of PoE controllers designed for high-efficiency power delivery. It complements other variants like the LTC4291 by offering single-port solutions. The family addresses the growing demand for higher power budgets in network infrastructure devices.
Replacement Considerations
Check for pin-compatible alternatives within the same manufacturer's portfolio. Verify if upgraded versions offer improved thermal characteristics or additional diagnostic features. Ensure any substitute maintains compliance with the required IEEE standards.
