LT8357 Boost, SEPIC & Flyback Controllers

Analog Devices LT8357 Boost, SEPIC & Flyback Controllers are a wide input range, current mode, DC/DC controller which can be configured as a boost, SEPIC, or flyback converter. The LT8357 drives a low-side N-channel power MOSFET with a 5V split gate drive. The current mode architecture allows adjustable and synchronizable 100kHz to 2MHz fixed-frequency operation, or internal 19% triangle spread-spectrum operation for low EMI. At light load, either pulse-skipping mode or low-ripple Burst Mode operation can be selected. Additional features include output power good and output short circuit protection in SEPIC and flyback configurations.

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Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Topology
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Duty Cycle - Max
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Analog Devices Switching Controllers Low-IQ, 2MHz 60V iso lated SEPIC FLYBACK
Datasheet
2,127In Stock
Min.: 1
Mult.: 1

Boost, Flyback, SEPIC 1 Output 350 kHz to 2 MHz 97.5 % - 40 C + 150 C SMD/SMT MSOP-12 Tube
Analog Devices Switching Controllers Low-IQ, 2MHz 60V iso lated SEPIC FLYBACK
Datasheet
2,342In Stock
Min.: 1
Mult.: 1

Boost, Flyback, SEPIC 1 Output 350 kHz to 2 MHz 97.5 % - 40 C + 150 C SMD/SMT MSOP-12 Tube
Analog Devices Switching Controllers Low-IQ, 2MHz 60V iso lated SEPIC FLYBACK
Datasheet
161In Stock
296Expected 2026-07-01
Min.: 1
Mult.: 1

Boost, Flyback, SEPIC 1 Output 350 kHz to 2 MHz 97.5 % - 40 C + 125 C SMD/SMT MSOP-12 Tube
Analog Devices Switching Controllers Low-IQ, 2MHz 60V iso lated SEPIC FLYBACK
Datasheet
Non-Stocked Lead-Time 10 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Boost, Flyback, SEPIC 1 Output 350 kHz to 2 MHz 97.5 % - 40 C + 125 C SMD/SMT MSOP-12 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers Low-IQ, 2MHz 60V iso lated SEPIC FLYBACK
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Boost, Flyback, SEPIC 1 Output 350 kHz to 2 MHz 97.5 % - 40 C + 150 C SMD/SMT MSOP-12 Reel
Analog Devices Switching Controllers Low-IQ, 2MHz 60V isolated SEPIC FLYBACK
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1

Boost 1 Output 350 kHz to 2 MHz 93 % 3 V to 60 V - 40 C + 150 C SMD/SMT MSOP-12 Tube
Analog Devices Switching Controllers Low-IQ, 2MHz 60V isolated SEPIC FLYBACK
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Boost 1 Output 350 kHz to 2 MHz 93 % 3 V to 60 V - 40 C + 150 C SMD/SMT MSOP-12 Reel
Analog Devices Switching Controllers Low-IQ, 2MHz 60V iso lated SEPIC FLYBACK
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Boost, Flyback, SEPIC 1 Output 350 kHz to 2 MHz 97.5 % - 40 C + 150 C SMD/SMT MSOP-12 Reel