LT8357

RECOMMENDED FOR NEW DESIGNS

60V 2MHz Low-IQ Boost, SEPIC and Flyback Controller

Analog Devices LT8357 Product Info

10 February 2026 4

Features

Wide Input Voltage Range: 3V to 60V
Low I_Q Burst Mode^® Operation: 8μA
Up to 95% Efficiency at 2MHz
±1.5% Internal 1V Voltage Reference
5V Split Gate Drive for Efficiency and EMI Optimization
100kHz to 2MHz Fixed Switching Frequency with External Clock Synchronization

Spread Spectrum Frequency Modulation for Low EMI
Accurate Enable Threshold with Hysteresis
Programmable Output Soft-Start and Tracking
Thermally-Enhanced 12-Lead MSOP Package
AEC-Q100 Qualified for Automotive Applications

Part details & applications

The LT8357 is 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 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 LT8357 provides a simple, compact and efficient solution for automotive, industrial, and battery-powered systems.

APPLICATIONS

Automotive and Industrial Systems
Battery-Powered Systems
Portable Electronic Equipment
Powertrain Battery Monitoring

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