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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 16DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Controller (PD), DC/DC
- Number of Channels：1
- Power - Max：12.95 W
- Internal Switch(s)：No
- Auxiliary Sense：No
- Standards：802.3af (PoE)
- Voltage - Supply：57V (Max)
- Current - Supply：3mA (Max)
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Surface Mount
- Package / Case：16-WFDFN Exposed Pad
- Supplier Device Package：16-DFN (5x3)
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Overview
The LTC4267CDHC#TRPBF is a Power Over Ethernet (PoE) Powered Device (PD) controller from Analog Devices, designed for IEEE 802.3af compliance. It integrates a high-voltage input stage with a 300kHz current-mode switching regulator to provide a complete power solution. The device operates within an input voltage range of 37V to 57V and supports output currents up to 900mA. Packaged in a 16-lead DFN EP package, it facilitates efficient power delivery for PoE applications.
Feature Summary
- Integrates IEEE 802.3af compliant PD interface with a high-frequency switching regulator
- Provides complete power management solution combining classification and regulation
- Supports direct connection to RJ45 host interfaces via integrated protection
Applications
- IEEE 802.3af Powered Device power supply design
- Network infrastructure equipment requiring PoE integration
- Embedded systems utilizing integrated power switching and regulation
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging configuration. Confirm that the CDHC designation corresponds to the correct temperature grade and package variant required for your assembly process. Ensure compatibility with the intended PCB footprint for the 16-lead DFN EP package before finalizing procurement orders.
Selection Notes
Select this component when designing for IEEE 802.3af standards requiring integrated classification and regulation. Consider the 300kHz switching frequency for balancing efficiency and component size. Evaluate the thermal performance requirements of the DFN EP package against your system's heat dissipation capabilities and operating temperature range specifications.
Part Context
This part belongs to the LTC4267 family of PoE controllers. It is functionally related to evaluation boards such as DC1145B and DC859A, which are used to demonstrate its capabilities. The device serves as a core component for implementing power-over-Ethernet solutions in networked electronic devices.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical parameter compatibility if considering alternative PoE controllers from other manufacturers or different series within the same product line.
