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LT8471 VIN Voltage

Question asked by Yuya on Jun 29, 2018
Latest reply on Jun 29, 2018 by victor.khasiev@analog.com

Hi,

My customers are considering LT 8471.

So I got a question.

 

In the data sheet, it is described as follows.
"When either channel is configured as a buck, ZETA or single-inductor inverting converter, the corresponding VIN pin (s) must be boosted above the input voltage, VCC."

 

#1  Why is it necessary to set the VIN pin above VCC?
       As an application, cold crank etc. will not occur, but it will be configured as a buck or single-inductor inverting   

       converter.

 

Best regards,

Yuya

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