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Product Detailed Parameters
- Description：IC POE CNTRL 1 CHANNEL 10MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：Controller (PD)
- Number of Channels：1
- Power - Max：25.5 W
- Internal Switch(s)：No
- Auxiliary Sense：Yes
- Standards：802.3at (PoE+), 802.3af (PoE)
- Voltage - Supply：23V ~ 60V
- Current - Supply：2mA (Max)
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：10-MSOP
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Overview
The LT4275BIMS#PBF is a Powered Device (PD) controller supporting IEEE 802.3at Type 2 and LTPoE++ standards, delivering up to 25.5W of power. It operates within an input voltage range of 9V to 60V and utilizes an external N-channel MOSFET for hot-swap control. The device features a 10-pin MSOP package with exposed pad and supports a wide junction temperature range from -40°C to +125°C.
Feature Summary
- Supports LTPoE++ classification schemes for high-power applications
- Integrates charge pump to drive external N-channel MOSFET
- Includes onboard signature resistor for standard compliance
- Provides programmable auxiliary power support via AUX pin
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 #PBF indicates lead-free tape and reel packaging compatibility if required by assembly processes. Confirm the IMS8 package designation matches the target PCB footprint. Ensure the B variant selection aligns with the intended 25.5W power budget rather than higher wattage options available in the A series.
Selection Notes
Select this component when designing for IEEE 802.3at Type 2 or LTPoE++ powered devices requiring up to 25.5W. The internal charge pump eliminates the need for complex P-channel MOSFET drivers. Consider the DFN-10-EP alternative if thermal performance or board space constraints favor a smaller footprint over the MSOP package.
Part Context
This part belongs to the LT4275 family of PD controllers, which are pin-compatible across variants. While the LT4275A supports up to 90W via proprietary LTPoE++, the LT4275B is specifically configured for 25.5W Type 2 applications. The LT4275C handles lower power Type 1 requirements. All variants share core control logic and protection features.
Replacement Considerations
LT4275AIMS#PBF offers higher power capability up to 90W with identical pinout. LT4275CIMS#PBF provides a lower-cost option for 13W Type 1 applications. Verify that any substitute maintains the same MSOP-10 package dimensions and thermal characteristics.
