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 034På 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
10 723På 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 498På 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
8 412På 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
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
199På 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
5 692På 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
179På 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
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
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
2 483På 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
2 863På 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, 5A Sync Buck Silent Switcher w/ 2.5
Datablad
257På lager
4 412På 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
1 434På 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
15På lager
2 500Förväntad 2026-07-17
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
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
25På 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
134På 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, 6A Sync Buck Silent Switcher 2 w/ 2
Datablad
15På lager
10 260På beställningen
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
3 455På 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
7 479På beställningen
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
6 480Förväntad 2027-02-10
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
12 960På beställningen
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
1 092På beställningen
Min.: 1
Multipla: 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