Voltage Regulators - Switching Regulators

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LT86x Synchronous Step-Down Silent Switchers

Analog Devices LT86xx Synchronous Step-Down Regulators feature Silent Switcher^® architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm QFN package, the monolithic construction with integrated power switches and the inclusion of all necessary circuitry yields a solution with a minimal PCB footprint. An ultra-low 2.5µA quiescent current enables applications requiring the highest efficiency at very small load currents. The transient response remains excellent and output voltage ripple is below 10mVP-P at any load, from zero to full current.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package/Case	Topology	Output Voltage	Output Current	Number of Outputs	Quiescent Current	Switching Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Series	Packaging
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640IUDCF-1#TRPBF Analog Devices 1: 13,89 € 5.694In Stock	Mfr. Part No. LT8640IUDCF-1#TRPBF Mouser Part No 584-8640IUDCF-1TRPBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	5.694In Stock	Cut Tape 13,89 € 11,00 € 10,28 € 9,52 € View Reel 8,28 € 8,96 € 8,75 € 8,28 € MouseReel Available	Min.: 1 Mult.: 1 Max.: 4.555 : 2.500	SMD/SMT	QFN-18	Buck	970 mV to 41.58 V	5 A	1 Output	2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640JUDCF#PBF Analog Devices 1: 15,56 € 7.013In Stock	Mfr. Part No. LT8640JUDCF#PBF Mouser Part No 584-LT8640JUDCF#PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	7.013In Stock	15,56 € 12,18 € 11,30 € 10,41 € View 10,30 € 9,70 € 9,49 € Quote	Min.: 1 Mult.: 1 Max.: 5.679	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640IUDCF-1#PBF Analog Devices 1: 14,35 € 179In Stock	Mfr. Part No. LT8640IUDCF-1#PBF Mouser Part No 584-8640IUDCF-1#PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	179In Stock	14,35 € 11,24 € 10,47 € 9,60 €	Min.: 1 Mult.: 1 Max.: 159	SMD/SMT	QFN-18	Buck	970 mV to 41.58 V	5 A	1 Output	2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640EUDCF#PBF Analog Devices 1: 14,17 € 175In Stock	Mfr. Part No. LT8640EUDCF#PBF Mouser Part No 584-LT8640EUDCF#PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	175In Stock	14,17 € 11,10 € 10,34 € 9,49 €	Min.: 1 Mult.: 1 Max.: 140	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	1.7 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640JUDCF-1#PBF Analog Devices 1: 15,03 € 91In Stock	Mfr. Part No. LT8640JUDCF-1#PBF Mouser Part No 584-LT8640JUDCF-1PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	91In Stock	15,03 € 11,91 € 11,14 € 10,28 € View 9,80 € 9,62 €	Min.: 1 Mult.: 1	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640EUDCF-1#PBF Analog Devices 1: 12,88 € 84In Stock 728On Order	Mfr. Part No. LT8640EUDCF-1#PBF Mouser Part No 584-LT8640EUDCF1PB	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	84In Stock 728On Order	12,88 € 10,09 € 9,39 € 8,62 € View 8,53 € 8,03 € 7,85 € Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	1.7 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640EUDC-1#PBF Analog Devices 1: 13,05 € 1.913In Stock	Mfr. Part No. LT8640EUDC-1#PBF Mouser Part No 584-LT8640EUDC-1#PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt86 silent switchers	Datasheet	1.913In Stock	13,05 € 10,22 € 9,51 € 8,72 € View 8,64 € 8,14 € 7,95 €	Min.: 1 Mult.: 1 Max.: 1.530	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	1.7 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640EUDC#TRPBF Analog Devices 1: 12,28 € 3.060In Stock	Mfr. Part No. LT8640EUDC#TRPBF Mouser Part No 584-LT8640EUDC#TRPBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	3.060In Stock	Cut Tape 12,28 € 9,68 € 9,02 € 8,31 € View Reel 7,55 € 8,28 € 8,01 € 7,77 € 7,55 € MouseReel Available	Min.: 1 Mult.: 1 Max.: 2.728 : 2.500	SMD/SMT	QFN-18	Buck	970 mV to 41.58 V	5 A	1 Output	2.5 uA, 300 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640IUDC#PBF Analog Devices 1: 13,40 € 2.991In Stock	Mfr. Part No. LT8640IUDC#PBF Mouser Part No 584-LT8640IUDC#PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt86 silent switchers	Datasheet	2.991In Stock	13,40 € 10,59 € 9,15 € 8,85 € View 8,69 € 8,48 € 8,32 €	Min.: 1 Mult.: 1 Max.: 2.392	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	1.7 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640EUDC-1#TRPBF Analog Devices 1: 13,05 € 941In Stock	Mfr. Part No. LT8640EUDC-1#TRPBF Mouser Part No 584-8640EUDC-1TRPBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	941In Stock	Cut Tape 13,05 € 10,22 € 9,50 € 8,73 € View 8,65 € 8,53 € 8,53 € MouseReel Available	Min.: 1 Mult.: 1 Max.: 770	SMD/SMT	QFN-18	Buck	970 mV to 41.58 V	5 A	1 Output	1.7 uA, 2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640IUDC-1#TRPBF Analog Devices 1: 13,40 € 602In Stock	Mfr. Part No. LT8640IUDC-1#TRPBF Mouser Part No 584-8640IUDC-1TRPBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	602In Stock	Cut Tape 13,40 € 10,59 € 9,88 € 9,11 € View 9,10 € 8,82 € 8,82 € MouseReel Available	Min.: 1 Mult.: 1 Max.: 824	SMD/SMT	QFN-18	Buck	970 mV to 41.58 V	5 A	1 Output	1.7 uA, 2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640HUDC#PBF Analog Devices 1: 14,53 € 886In Stock 3.830On Order	Mfr. Part No. LT8640HUDC#PBF Mouser Part No 584-LT8640HUDC#PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt86 silent switchers	Datasheet	886In Stock 3.830On Order On Order Ship Dates Mfr. No: LT8640HUDC#PBF Stock: 886 Can Dispatch Immediately On Order: 3.739 Pending 91 Expected 11/13/2026 Factory Lead Time: Unverified	14,53 € 11,52 € 10,77 € 9,93 € View 9,47 € 9,31 €	Min.: 1 Mult.: 1 Max.: 708	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	1.7 uA	200 kHz to 3 MHz	- 40 C	+ 150 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640HUDCF#PBF Analog Devices 1: 18,19 € 52In Stock	Mfr. Part No. LT8640HUDCF#PBF Mouser Part No 584-LT8640HUDCF#PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	52In Stock	18,19 € 14,47 € 13,10 € 12,35 € View 11,95 € 11,72 € 11,71 €	Min.: 1 Mult.: 1	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	1.7 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Tube
Switching Voltage Regulators 65V, 3.5A Sync Buck Silent Switcher w/ 2 LT8641HUDC#PBF Analog Devices 1: 14,53 € 598In Stock	Mfr. Part No. LT8641HUDC#PBF Mouser Part No 584-LT8641HUDC#PBF	Analog Devices	Switching Voltage Regulators 65V, 3.5A Sync Buck Silent Switcher w/ 2 Learn More about Analog Devices adi lt86 high voltage regulators	Datasheet	598In Stock	14,53 € 11,52 € 10,77 € 9,93 € 9,47 €	Min.: 1 Mult.: 1 Max.: 478	SMD/SMT	QFN-18	Buck	810 mV to 64 V	3.5 A	1 Output	2.5 uA	200 kHz to 3 MHz	- 40 C	+ 150 C		LT8641	Tube
Switching Voltage Regulators 65V, 3.5A Sync Buck Silent Switcher w/ 2 LT8641IUDC#PBF Analog Devices 1: 14,35 € 265In Stock	Mfr. Part No. LT8641IUDC#PBF Mouser Part No 584-LT8641IUDC#PBF	Analog Devices	Switching Voltage Regulators 65V, 3.5A Sync Buck Silent Switcher w/ 2 Learn More about Analog Devices adi lt86 silent switchers	Datasheet	265In Stock	14,35 € 11,24 € 10,46 € 9,60 € View 9,50 € 8,94 €	Min.: 1 Mult.: 1 Max.: 598	SMD/SMT	QFN-18	Buck	810 mV to 64 V	3.5 A	1 Output	2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8641	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640HUDC-1#PBF Analog Devices 1: 14,81 € 91In Stock 1.001On Order	Mfr. Part No. LT8640HUDC-1#PBF Mouser Part No 584-LT8640HUDC-1#PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	91In Stock 1.001On Order	14,81 € 11,66 € 10,52 € 9,88 € View 9,75 € 9,34 € 9,22 € Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-18	Buck	970 mV to 41.58 V	5 A	1 Output	300 uA	200 kHz to 3 MHz	- 40 C	+ 150 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640IUDC-1#PBF Analog Devices 1: 14,35 € 41In Stock	Mfr. Part No. LT8640IUDC-1#PBF Mouser Part No 584-LT8640IUDC-1#PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt86 silent switchers	Datasheet	41In Stock	14,35 € 11,24 € 10,46 € 9,60 € View 9,50 € 8,94 € 8,75 € Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	1.7 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640IUDCF#PBF Analog Devices 1: 14,43 € 25In Stock 1.820On Order	Mfr. Part No. LT8640IUDCF#PBF Mouser Part No 584-LT8640IUDCF#PBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	25In Stock 1.820On Order	14,43 € 11,43 € 9,90 € 9,57 € View 9,42 € 9,13 € 8,94 € Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	1.7 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640JUDCF#WPBF Analog Devices 1: 16,41 € 76In Stock	Mfr. Part No. LT8640JUDCF#WPBF Mouser Part No 584-LT8640JUDCF#WPBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	76In Stock	16,41 € 13,00 € 12,16 € 11,21 € View 10,70 € 10,50 €	Min.: 1 Mult.: 1	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C	AEC-Q100	LT8640	Tube
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640JUDCF-1#WPBF Analog Devices 1: 15,70 € 113In Stock	Mfr. Part No. LT8640JUDCF-1#WPBF Mouser Part No 584-LT8640JUDCF1WPBF	Analog Devices	Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 Learn More about Analog Devices adi lt8640 regulators	Datasheet	113In Stock	15,70 € 12,44 € 11,64 €	Min.: 1 Mult.: 1 Max.: 90	SMD/SMT	QFN-18	Buck	970 mV to 41.9 V	5 A	1 Output	2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C	AEC-Q100	LT8640	Tube
Switching Voltage Regulators 65V 3.5A Silent Switcher LT8641ARUDCM#WPBF Analog Devices 1: 7,15 € 160In Stock	Mfr. Part No. LT8641ARUDCM#WPBF Mouser Part No 584-LT8641ARUDCMWPBF	Analog Devices	Switching Voltage Regulators 65V 3.5A Silent Switcher Learn More about Analog Devices adi lt86 silent switchers	Datasheet	160In Stock	7,15 € 5,54 € 4,72 € 4,71 €	Min.: 1 Mult.: 1 Max.: 128	SMD/SMT	QFN-18	Buck		3.5 A	1 Output	1.7 uA	210 kHz to 1.95 MHz	- 40 C	+ 150 C	AEC-Q100	LT8641	Tube

LT86x Synchronous Step-Down Silent Switchers

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