Voltage Regulators - Switching Regulators – Mouser Korea, Republic of

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LT8640/LT8640-1 Step-Down Regulators

Analog Devices Inc. LT8640/LT8640-1 Step-Down Regulators feature Silent Switcher architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. An ultralow 2.5µA quiescent current—with the output in full regulation—enables applications requiring the highest efficiency at very small load currents. The LT8640/LT8640-1 allows high V_IN to low V_OUT conversion at high frequency with a fast minimum top switch on-time of 30ns. The SYNC/MODE pin selects between Burst Mode operation, spread spectrum mode, synchronization to an external clock, and either pulse-skipping (LT8640) or forced continuous mode (LT8640-1).

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (KRW) 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 LT8640JUDCF#PBF Analog Devices 1: ₩17,035.2 7,013In Stock	Mfr. Part # LT8640JUDCF#PBF Mouser Part # 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	₩17,035.2 ₩16,660.8 ₩16,302 ₩15,974.4 View ₩15,724.8 ₩15,490.8 ₩15,256.8 Quote	Min.: 1 Mult.: 1 Max.: 5,610	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#TRPBF Analog Devices 1: ₩15,038.4 5,695In Stock	Mfr. Part # LT8640IUDCF-1#TRPBF Mouser Part # 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	5,695In Stock	Cut Tape ₩15,038.4 ₩14,710.8 ₩14,398.8 ₩14,102.4 View Reel ₩13,275.6 ₩13,884 ₩13,681.2 ₩13,478.4 ₩13,275.6 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,556 : 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 LT8640EUDCF#PBF Analog Devices 1: ₩14,851.2 175In Stock	Mfr. Part # LT8640EUDCF#PBF Mouser Part # 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	₩14,851.2 ₩14,523.6 ₩14,211.6 ₩13,930.8	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 LT8640EUDCF-1#PBF Analog Devices 1: ₩23,368.8 84In Stock 728On Order	Mfr. Part # LT8640EUDCF-1#PBF Mouser Part # 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	₩23,368.8 ₩18,298.8 ₩17,035.2 ₩15,631.2 View ₩15,475.2 ₩14,570.4 ₩14,242.8 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-1#PBF Analog Devices 1: ₩27,268.8 91In Stock	Mfr. Part # LT8640JUDCF-1#PBF Mouser Part # 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	₩27,268.8 ₩21,606 ₩20,202 ₩18,642 View ₩17,768.4 ₩17,456.4	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 LT8640IUDCF-1#PBF Analog Devices 1: ₩15,038.4 179In Stock	Mfr. Part # LT8640IUDCF-1#PBF Mouser Part # 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	₩15,038.4 ₩14,710.8 ₩14,398.8 ₩14,102.4	Min.: 1 Mult.: 1 Max.: 143	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 LT8640EUDC#TRPBF Analog Devices 1: ₩22,276.8 2,695In Stock	Mfr. Part # LT8640EUDC#TRPBF Mouser Part # 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	2,695In Stock	Cut Tape ₩22,276.8 ₩17,550 ₩16,364.4 ₩15,069.6 View Reel ₩14,102.4 ₩15,022.8 ₩14,523.6 ₩14,102.4 ₩14,102.4 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,173 : 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 LT8640EUDC-1#PBF Analog Devices 1: ₩23,665.2 1,073In Stock	Mfr. Part # LT8640EUDC-1#PBF Mouser Part # 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	1,073In Stock	₩23,665.2 ₩18,532.8 ₩17,253.6 ₩15,818.4 View ₩15,678 ₩14,757.6 ₩14,414.4	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 LT8640IUDC#PBF Analog Devices 1: ₩24,304.8 1,966In Stock	Mfr. Part # LT8640IUDC#PBF Mouser Part # 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	1,966In Stock	₩24,304.8 ₩19,203.6 ₩16,598.4 ₩16,052.4 View ₩15,771.6 ₩15,381.6 ₩15,100.8	Min.: 1 Mult.: 1 Max.: 1,600	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, 6A Sync Buck Silent Switcher 2 w/ 2 LT8640SEV-2#PBF Analog Devices 1: ₩26,036.4 3,050In Stock	Mfr. Part # LT8640SEV-2#PBF Mouser Part # 584-LT8640SEV-2#PBF	Analog Devices	Switching Voltage Regulators 42V, 6A Sync Buck Silent Switcher 2 w/ 2 Learn More about Analog Devices adi lt8640 regulators	Datasheet	3,050In Stock	₩26,036.4 ₩20,592 ₩19,234.8 ₩17,737.2 View ₩17,019.6 ₩16,567.2	Min.: 1 Mult.: 1 Max.: 2,440	SMD/SMT	LQFN-24	Buck	970 mV to 41.58 V	6 A	1 Output	2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640S	Tray
Switching Voltage Regulators 42V, 6A Sync Buck Silent Switcher 2 w/ 2 LT8640SIV-2#PBF Analog Devices 1: ₩26,457.6 1,223In Stock	Mfr. Part # LT8640SIV-2#PBF Mouser Part # 584-LT8640SIV-2#PBF	Analog Devices	Switching Voltage Regulators 42V, 6A Sync Buck Silent Switcher 2 w/ 2 Learn More about Analog Devices adi lt8640 regulators	Datasheet	1,223In Stock	₩26,457.6 ₩20,966.4 ₩19,593.6 ₩18,080.4 View ₩17,253.6 ₩16,941.6	Min.: 1 Mult.: 1 Max.: 1,058	SMD/SMT	LQFN-24	Buck	970 mV to 41.58 V	6 A	1 Output	2.5 uA	200 kHz to 3 MHz	- 40 C	+ 125 C		LT8640S	Tray
Switching Voltage Regulators 42V, 5A Sync Buck Silent Switcher w/ 2.5 LT8640EUDC-1#TRPBF Analog Devices 1: ₩23,665.2 891In Stock	Mfr. Part # LT8640EUDC-1#TRPBF Mouser Part # 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	891In Stock	Cut Tape ₩23,665.2 ₩18,532.8 ₩17,238 ₩15,834 View ₩15,693.6 ₩15,475.2 ₩15,475.2 MouseReel Available	Min.: 1 Mult.: 1 Max.: 712	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: ₩24,304.8 552In Stock	Mfr. Part # LT8640IUDC-1#TRPBF Mouser Part # 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	552In Stock	Cut Tape ₩24,304.8 ₩19,203.6 ₩17,924.4 ₩16,520.4 ₩16,504.8 ₩16,504.8 MouseReel Available	Min.: 1 Mult.: 1 Max.: 441	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: ₩26,364 871In Stock 3,830On Order	Mfr. Part # LT8640HUDC#PBF Mouser Part # 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	871In Stock 3,830On Order On Order Ship Dates Mfr. #: LT8640HUDC#PBF Stock: 871 Can Ship Immediately On Order: 3,739 Pending 91 Expected 11/27/2026 Factory Lead-Time: Unverified	₩26,364 ₩20,904 ₩19,531.2 ₩18,018 View ₩17,175.6 ₩16,879.2	Min.: 1 Mult.: 1 Max.: 696	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: ₩19,968 52In Stock	Mfr. Part # LT8640HUDCF#PBF Mouser Part # 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	₩19,968 ₩19,531.2 ₩19,110 ₩18,720 View ₩18,439.2 ₩18,158.4 ₩17,893.2 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 LT8640HUDC-1#PBF Analog Devices 1: ₩26,863.2 91In Stock 1,001On Order	Mfr. Part # LT8640HUDC-1#PBF Mouser Part # 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	₩26,863.2 ₩21,153.6 ₩19,078.8 ₩17,924.4 View ₩17,690.4 ₩16,941.6 ₩16,723.2 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: ₩26,036.4 41In Stock	Mfr. Part # LT8640IUDC-1#PBF Mouser Part # 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	₩26,036.4 ₩20,389.2 ₩18,969.6 ₩17,409.6 View ₩17,238 ₩16,224 ₩15,865.2 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: ₩26,176.8 25In Stock 1,820On Order	Mfr. Part # LT8640IUDCF#PBF Mouser Part # 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	₩26,176.8 ₩20,732.4 ₩17,955.6 ₩17,362.8 View ₩17,082 ₩16,567.2 ₩16,208.4 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 Restricted Availability	Mfr. Part # LT8640JUDCF#WPBF Mouser Part # 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 Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	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: ₩28,485.6 113In Stock	Mfr. Part # LT8640JUDCF-1#WPBF Mouser Part # 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	₩28,485.6 ₩22,573.2 ₩21,106.8	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

LT8640/LT8640-1 Step-Down Regulators

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