LTC4268-1

NOT RECOMMENDED FOR NEW DESIGNS

High Power PD with Synchronous No-Opto Flyback Controller

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $2.90

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Part Details

Robust 35W PD Front End
IEEE 802.3af Compliant
Rugged 750mA Power MOSFET with Precision Dual Level Current Limit
High Performance Synchronous Flyback Controller
IEEE Isolation Obtained Without an Opto-Isolator
Adjustable Frequency from 50kHz to 250kHz
Tight Multi-Output Regulation with Load Compensation
On-board 25k Signature Resistor
Programmable Classification Current to 75mA
Complete Thermal and Over-Current Protection
Available in Compact 32-Pin 7mm × 4mm DFN Package

Part Models: 4
1ku List Price: Starting From $2.90

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC4268CDKD-1#PBF	32-Lead DFN (7mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4268CDKD-1#TRPBF	32-Lead DFN (7mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4268IDKD-1#PBF	32-Lead DFN (7mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4268IDKD-1#TRPBF	32-Lead DFN (7mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Power Monitors 1
LT2940	PRODUCTION	Power and Current Monitor

Parts	Product Life Cycle	Description
LTC4269-1	PRODUCTION	IEEE 802.3at High Power PD and No-Opto Flyback Controller with AUX Support
LTC4278	PRODUCTION	IEEE 802.3at PD with Synchronous No-Opto Flyback Controller and 12V Aux Support