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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 16DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- 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-3#PBF is a Power Over Ethernet Powered Device controller designed for IEEE 802.3af compliance. It integrates a 300kHz current-mode switching regulator to provide a complete power solution for PD applications. The device operates with an input voltage range of 37V to 57V and supports output currents up to 900mA at 12V. Packaged in a 16-pin DFN EP, it combines PoE interface logic with high-efficiency DC-DC conversion.
Feature Summary
- Integrates IEEE 802.3af compliant Powered Device interface with a 300kHz current mode switching regulator
- Provides a complete power solution combining PoE detection and regulation in a single component
- Supports high efficiency power conversion for networked devices requiring integrated power management
Applications
- IEEE 802.3af compliant Powered Device interfaces
- Networked sensors and IoT endpoints requiring integrated power solutions
- PoE-powered industrial control modules
Procurement Notes
Verify the specific suffix #PBF indicates lead-free packaging when sourcing. Confirm the CDHC package variant matches your PCB footprint requirements. Ensure compatibility with standard 802.3af PSE implementations. Check for updated revision levels against current design specifications.
Selection Notes
Select this part when a compact, integrated solution for 802.3af PDs is required. The internal 300kHz regulator reduces external component count compared to discrete designs. Suitable for applications where board space is limited and efficient power conversion from PoE lines is critical.
Part Context
This component belongs to the LTC4267 family of PoE controllers. It differs from other variants by integrating a specific switching regulator configuration optimized for 802.3af standards. It serves as a core power management element for devices receiving power over Ethernet cables.
Replacement Considerations
LTC4267CDHC-3#TRPBF offers the same functionality in tape-and-reel packaging instead of bulk. Other family members like LTC4267CDHC may offer different regulatory compliance or pinout configurations.
