LMS3655 datasheet(22/49 Pages) TI1

Part #	LMS3655

Description	5.5-A, 36-V Synchronous, 400-kHz DC-DC Step-Down Converter

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Manufacturer	TI1 [Texas Instruments]

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LMS3655

SNAS744 – JULY 2017

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Product Folder Links: LMS3655

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The spread spectrum is only available while the clock of the LMS3655 devices is free running at its natural

frequency. Any of the following conditions overrides spread spectrum, turning it off:

•

An external clock is applied to the SYNC/MODE terminal.

•

The clock is slowed due to operation at low input voltage; this is operation in dropout.

•

The clock is slowed under light load in Auto mode; this is normally not seen above 200 mA of load. In FPWM

mode, spread spectrum is active even if there is no load.

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