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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 10DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：Controller (PD)
- Number of Channels：1
- Power - Max：13 W
- Internal Switch(s)：No
- Auxiliary Sense：Yes
- Standards：802.3af (PoE)
- Voltage - Supply：23V ~ 60V
- Current - Supply：2mA (Max)
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
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Overview
The LT4275CIDD#PBF is a pin-for-pin compatible IEEE 802.3af Type 1 Powered Device (PD) controller from Analog Devices. It supports an input voltage range of 9V to 60V and delivers up to 13W of output power. The device utilizes an internal charge pump to drive an external N-channel MOSFET, eliminating the need for larger P-channel solutions. It features a 10-lead DFN package with exposed pad.
Feature Summary
- Supports IEEE 802.3af PoE standards with integrated signature resistance
- Internal charge pump drives external N-channel MOSFET for low loss
- Includes power good output, undervoltage lockout, and thermal protection
- Auxiliary pin supports auxiliary power override functionality
Applications
- High-power wireless data systems
- Outdoor security camera equipment
- Commercial and public information displays
- High-temperature industrial applications
Procurement Notes
Verify the specific suffix 'IDD' indicates the 10-lead DFN package variant. Confirm that the 'C' designation aligns with IEEE 802.3af Type 1 requirements for your design. Check for RoHS compliance markers on the datasheet. Ensure the supplier provides official Analog Devices documentation. Validate the component status as active before finalizing procurement.
Selection Notes
Select this controller when designing for IEEE 802.3af Type 1 PD applications requiring up to 13W. It is suitable for designs needing low RDS(ON) efficiency via external N-channel MOSFETs. Consider the 10-lead DFN package for space-constrained layouts. Use if auxiliary power support or non-standard low-voltage operation is required.
Part Context
The LT4275 family includes pin-compatible variants such as LT4275A for LTPoE++ and LT4275B for IEEE 802.3at. The LT4275C specifically targets lower power Type 1 applications. This part belongs to the fourth-generation PD controller series designed for high-efficiency Ethernet-powered devices.
Replacement Considerations
LT4275BIDD#PBF offers higher power capability for IEEE 802.3at applications while maintaining pin compatibility. LT4275AIDD#PBF supports LTPoE++ and higher power levels. Verify electrical specifications match the target power budget before substitution.
