LM5175-Q1: BUCK BOOST Solution Recommendation

Hi Team,

Based on automotive customer’s requirement: Vin range is 3.5-36V, Vout is 5V , Iout ≥2.5A and Iq<100uA.

Now I recommend two solutions for customer:

• Solution A: An BUCK-BOOST

LM5175 or TXX5528XX-Q1(not RTM, so I hide the GPN)

• Solution B:an PREBOOST+ an BUCK

TPS55340/LM5155+LMR33630

Which solution do you think better? Or do you have better recommendation?

Thanks!