Analog Devices Inc. LT8357 Boost, SEPIC & Flyback Controllers

Analog Devices Inc. LT8357 Boost, SEPIC & Flyback Controllers

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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.

With a wide 3V to 60V input voltage range and 8μA low quiescent current, the Analog Devices LT8357 provides a simple, compact, and efficient solution for automotive, industrial, and battery-powered systems.

Features

  • 3V to 60V wide input voltage range
  • 8μA low IQ Burst Mode® operation
  • Up to 95% efficiency at 2MHz
  • ±1.5% internal 1V voltage reference
  • 5V split gate drive for efficiency and EMI optimization
  • Spread-spectrum frequency modulation for low EMI
  • 100kHz to 2MHz fixed switching frequency with external clock synchronization
  • Accurate enable threshold with hysteresis
  • Programmable output soft-start and tracking
  • Thermally-enhanced 12-lead MSOP package

Typical Application

more information: https://www.analog.com/en/products/lt8357.html

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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