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 VIN to low VOUT 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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Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
7 103På lager
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
7 401På lager
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 6A Sync Buck Silent Switcher 2 w/ 2
Datablad
11 200På lager
Min.: 1
Multipla: 1

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 + 150 C LT8640S Tray
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
2 733På lager
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 6A Sync Buck Silent Switcher 2 w/ 2
Datablad
9 967På lager
Min.: 1
Multipla: 1

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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
219På lager
Min.: 1
Multipla: 1

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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
189På lager
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
175På lager
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
5 879På lager
MouseReel tillgängligt
Min.: 1
Multipla: 1
: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
91På lager
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
75På lager
1 820På beställningen
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
89På lager
728På beställningen
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
4 347På lager
1 911På beställningen
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
3 413På lager
MouseReel tillgängligt
Min.: 1
Multipla: 1
: 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
Analog Devices Switchande spänningsregulatorer 42V, 6A Sync Buck Silent Switcher 2 w/ 2
Datablad
2 720På lager
Min.: 1
Multipla: 1

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
Analog Devices Switchande spänningsregulatorer 42V, 6A Sync Buck Silent Switcher 2 w/ 2
Datablad
3 430På lager
3 240Förväntad 2026-11-23
Min.: 1
Multipla: 1

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
Analog Devices Switchande spänningsregulatorer 42V, 6A Sync Buck Silent Switcher 2 w/ 2
Datablad
9 218På lager
Min.: 1
Multipla: 1

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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
2 056På lager
MouseReel tillgängligt
Min.: 1
Multipla: 1
: 2 500

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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
675På lager
2 500Förväntad 2026-07-09
MouseReel tillgängligt
Min.: 1
Multipla: 1
: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
178På lager
3 822På beställningen
Min.: 1
Multipla: 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 + 150 C LT8640 Tube
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
52På lager
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
55På lager
91Förväntad 2026-06-24
Min.: 1
Multipla: 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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
83På lager
2 500Förväntad 2026-04-27
MouseReel tillgängligt
Min.: 1
Multipla: 1
: 2 500

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
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
126På lager
MouseReel tillgängligt
Min.: 1
Multipla: 1
: 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 + 150 C LT8640 Reel, Cut Tape, MouseReel
Analog Devices Switchande spänningsregulatorer 42V, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
143På lager
Min.: 1
Multipla: 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