LT4294HMS#TRPBF

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Analog Devices Inc./Maxim Integrated

IEEE 802.3BT PD INTERFACE CONTROLLER

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LT4294HMS#TRPBF

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Analog Devices Inc./Maxim Integrated

IEEE 802.3BT PD INTERFACE CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT4294 Series

The LT4294 is an IEEE 802.3af/at/bt-compliant powered device (PD) interface controller. TheT2Poutput indicates the number of classification events received during IEEE 802.3bt-compliant mutual identification and negotiation of available power.The LT4294 utilizes an external, low RDS(ON)N-channel hot swap MOSFET and supports the LT4320/LT4321 ideal diode bridges, to extend the end-to-end power delivery efficiency and eliminate costly heat sinks. The LT4294 also includes a power good output, onboard signature resistor, undervoltage lockout, and thermal protection. Start-up inrush current is adjustable with an external capacitor. Auxiliary power override is supported as low as 9V with the AUX pin.The LT4294 can be configured to support all possible 802.3bt, 802.3at and 802.3af power levels with external component changes. Pin-for-pin compatibility with the LT4275 family of PD Interface Controllers enables easy migration between LTPoE++ PDs and IEEE 802.3bt-compliant PDs.ApplicationsHigh Power Wireless Data SystemsOutdoor Security Camera EquipmentCommercial and Public Information DisplaysHigh Temperature Industrial Applications

Technical Specifications

Parameters and characteristics for this part

Specification	LT4294HMS#TRPBF

Auxiliary Sense	Yes
Current - Supply	2 mA
Internal Switch(s)	No
Mounting Type	Surface Mount
Number of Channels	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Package Length	0.118 in
Package Name	10-TFSOP, 10-MSOP
Package Width	3 mm
Power - Max	71 W
Standards	802.3bt, 802.3af (PoE), 802.3at (PoE+)
Type	Controller (PD)
Voltage - Supply	60 V

LT4294 Series

Part	Auxiliary Sense	Voltage - Supply	Package / Case	Mounting Type	Standards	Operating Temperature (Max)	Operating Temperature (Min)	Current - Supply	Power - Max	Type	Package Length	Package Name	Package Width	Number of Channels	Internal Switch(s)
Analog Devices Inc./Maxim Integrated LT4294HDD#PBF	Yes	60 V	10-WFDFN Exposed Pad	Surface Mount	802.3af (PoE) 802.3at (PoE+) 802.3bt	125 °C	-40 °C	2 mA	71 W	Controller (PD)	3 mm	10-DFN	3 mm	1	No
Analog Devices Inc./Maxim Integrated LT4294IMS#PBF	Yes	60 V		Surface Mount	802.3af (PoE) 802.3at (PoE+) 802.3bt	85 °C	-40 °C	2 mA	71 W	Controller (PD)	0.118 in	10-MSOP 10-TFSOP	3 mm	1	No
Analog Devices Inc./Maxim Integrated LT4294IMS#TRPBF	Yes	60 V		Surface Mount	802.3af (PoE) 802.3at (PoE+) 802.3bt	85 °C	-40 °C	2 mA	71 W	Controller (PD)	0.118 in	10-MSOP 10-TFSOP	3 mm	1	No
Analog Devices Inc./Maxim Integrated LT4294IDD#PBF	Yes	60 V	10-WFDFN Exposed Pad	Surface Mount	802.3af (PoE) 802.3at (PoE+) 802.3bt	85 °C	-40 °C	2 mA	71 W	Controller (PD)	3 mm	10-DFN	3 mm	1	No
Analog Devices Inc./Maxim Integrated LT4294HDD#TRPBF	Yes	60 V	10-WFDFN Exposed Pad	Surface Mount	802.3af (PoE) 802.3at (PoE+) 802.3bt	125 °C	-40 °C	2 mA	71 W	Controller (PD)	3 mm	10-DFN	3 mm	1	No
Analog Devices Inc./Maxim Integrated LT4294IDD#TRPBF	Yes	60 V	10-WFDFN Exposed Pad	Surface Mount	802.3af (PoE) 802.3at (PoE+) 802.3bt	85 °C	-40 °C	2 mA	71 W	Controller (PD)	3 mm	10-DFN	3 mm	1	No
Analog Devices Inc./Maxim Integrated LT4294HMS#PBF	Yes	60 V		Surface Mount	802.3af (PoE) 802.3at (PoE+) 802.3bt	125 °C	-40 °C	2 mA	71 W	Controller (PD)	0.118 in	10-MSOP 10-TFSOP	3 mm	1	No
Analog Devices Inc./Maxim Integrated LT4294HMS#TRPBF	Yes	60 V		Surface Mount	802.3af (PoE) 802.3at (PoE+) 802.3bt	125 °C	-40 °C	2 mA	71 W	Controller (PD)	0.118 in	10-MSOP 10-TFSOP	3 mm	1	No

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R572 Reliability Data

LT4294: IEEE 802.3bt PD Interface Controller Data Sheet (Rev.B)