LT3999 DC-DC Transformer Driver

Analog Devices Inc. LT3999 DC-DC Transformer Driver is a monolithic, high-voltage, high-frequency, push-pull DC-DC driver designed to provide isolated power in a small solution footprint. The LT3999 includes functions such as duty cycle control, soft start, and protection features such as overvoltage lockout (OVLO), undervoltage lockout (UVLO), and thermal shutdown. The LT3999 has two 1A current limited power switches that switch out of phase. The duty cycle is programmable to adjust the output voltage. The switching frequency is programmed up to 1MHz and can be synchronized to an external clock for more accurate placement of switcher harmonics. 

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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
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Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
2.771In Stock
Min.: 1
Mult.: 1

SMD/SMT MSOP-10 Push-Pull Adjustable 1 A 1 Output 100 nA 1 MHz - 40 C + 125 C LT3999 Tube
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
1.562In Stock
Min.: 1
Mult.: 1

SMD/SMT MSOP-10 Push-Pull Adjustable 1 A 1 Output 100 nA 1 MHz - 40 C + 125 C LT3999 Tube
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
3.362In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT MSOP-10 Push-Pull Adjustable 1 A 1 Output 1 MHz - 40 C + 125 C LT3999 Reel, Cut Tape, MouseReel
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
352In Stock
Min.: 1
Mult.: 1

SMD/SMT DFN-10 Push-Pull Adjustable 1 A 1 Output 100 nA 1 MHz - 40 C + 125 C LT3999 Tube
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
594In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT DFN-10 Push-Pull Adjustable 1 A 1 Output 1 MHz - 40 C + 125 C LT3999 Reel, Cut Tape, MouseReel
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
659In Stock
750Expected 7/8/2026
Min.: 1
Mult.: 1

SMD/SMT MSOP-10 Push-Pull Adjustable 1 A 1 Output 100 nA 1 MHz - 40 C + 150 C LT3999 Tube
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
67In Stock
Min.: 1
Mult.: 1

SMD/SMT MSOP-10 Push-Pull Adjustable 1 A 1 Output 100 nA 1 MHz - 55 C + 150 C LT3999 Tube
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
6In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT MSOP-10 Push-Pull Adjustable 1 A 1 Output 1 MHz - 40 C + 125 C LT3999 Reel, Cut Tape, MouseReel
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
2.390Expected 7/23/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

SMD/SMT MSOP-10 Push-Pull Adjustable 1 A 1 Output 100 nA 1 MHz - 40 C + 150 C LT3999 Reel, Cut Tape, MouseReel
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
170Expected 6/9/2026
Min.: 1
Mult.: 1

SMD/SMT DFN-10 Push-Pull Adjustable 1 A 1 Output 100 nA 1 MHz - 40 C + 125 C LT3999 Tube
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

SMD/SMT DFN-10 Push-Pull Adjustable 1 A 1 Output 1 MHz - 40 C + 125 C LT3999 Reel
Analog Devices Switching Voltage Regulators L N, 1A, 1MHz PP DC/DC Drvr w/ Duty Cycl
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2.500
Mult.: 2.500
: 2.500

SMD/SMT MSOP-10 Push-Pull Adjustable 1 A 1 Output 1 MHz - 55 C + 150 C LT3999 Reel