DC2838A

The LT8365 from Analog Devices, is a current mode DC/DC converter with a 1.5A, 150V switch operating from a 2.8V to 60V input. With a unique single feedback pin architecture it is capable of boost, SEPIC or inverting configurations. Burst Mode operation consumes as low as 9µA quiescent current to maintain high efficiency at very low output currents, while keeping typical output ripple below 15mV.

An external compensation pin allows optimization of loop bandwidth over a wide range of input and output voltages and programmable switching frequencies between 100kHz and 500kHz. A SYNC/MODE pin allows synchronization to an external clock. It can also be used to select between burst or pulse-skipping modes of operation with or without spread spectrum frequency modulation for low EMI. For increased efficiency, a BIAS pin can accept a second input to supply the INTVCC regulator. Additional features include frequency foldback and programmable soft-start to control inductor current during startup.

The LT8365 is available in a thermally enhanced 16-lead MSOP package with four pins removed for high voltage pin spacings.

Key Features and Benefits

- 150V, 1.5A internal Switch delivers High Boost, SEPIC and Inverted Voltages.

- Positive or Negative Output voltage programing with single feedback pin minimizes application circuit footprint and complexity

- Spread Spectrum Frequency Modulation reduces EMI

Applications

- Automotive: +/-250V APD Bias Supply for LiDAR

- Instrumentation: High voltage DAC or High voltage Op Amp Bias Supplies

- Healthcare: Vascular Imaging

- Industrial Automation: Laser Bias and light analysis, Laser Monitor

Block Diagrams and Tables

Related Evaluation Board

DC2840A

DC2838A

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