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Leverage Superior Dropout Performance to Regulate Through Extreme Cold-Crank Conditions

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Date: September 11, 2017

Being attached to the battery means that wide input voltage automotive buck converters are subject to extreme transient conditions like load dump and cold crank. With OEM cold crank specifications often reaching as low as 3.6V input to the converter, a boost stage is often required to ensure a stable 3.3V output. But this adds cost, size, and complexity to the power supply design. The LMS3635-Q1 and LMS3655-Q1 synchronous buck converters feature extremely low dropout operation that eliminates the need for this additional boost stage, while also providing excellent EMI and thermal performance. Watch as Katelyn demonstrates this low dropout performance using the TIDA-01432 USB-C reference design.