LT8641ARUDCM#TRPBF

LT8641ARUDCM#TRPBF is a 65V, 3.5A/5A peak synchronous step-down silent switcher with 2.5µA quiescent current. LT®8641A step-down regulator features silent switcher architecture designed to minimize EMI emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm side wettable QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution with a minimal PCB footprint. An ultralow 2.5μA quiescent current-with the output in full regulation-enables applications requiring highest efficiency at very small load currents. Essential features are included and easy to use: an open drain PG pin signals when the output is in regulation. The SYNC/MODE pin selects between Burst Mode, pulseskipping, or spread spectrum mode, and also allows synchronization to an external clock. Typical applications are industrial supplies, general purpose step-down.

• Ultralow EMI emissions, spread spectrum frequency modulation
• Wide input voltage range from 3V to 65V
• Ultralow quiescent current Burst Mode® operation
• Fast minimum switch on-time is 35ns
• Safely tolerates inductor saturation in overload
• Output soft-start and tracking
• Soft-start and tracking functionality are accessed through the TR/SS pin
• 18-lead plastic QFN package
• Temperature rating range from -40°C to 150°C
• Adjustable and synchronizable is 200KHz to 3MHz

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party