Other Parts Discussed in Thread: LMR36015, LMR50410, TLV733P
Hi team,
Background:
I am currently working on my independent study to create a power tree solution. The requirements are the following rails: 5V @ 1A, 3.3V @ 1A, and 1.8V @ 200mA with an input voltage between 6V and 36V. Additionally, all parts must be automotive rated with cost as the biggest consideration and size the next biggest.
After considering several different topologies, I am leaning towards using thee of the LMR50410s with one to create each rail. The solution comes out to an estimated BOM of $2.44 and taking up 228mm^2. In comparison, the second cheapest design utilizes an LMR50410 (for the 5V rail @1A), an LMR36015 (for the 3.3V rail @1.2A), and a TLV733P (for the 1.8V rail @ 200mA) coming off the 3.3V rail. This solution comes out to an estimated cost of $2.49 and a size of 206 mm^2.
Question:
Is there a different IC or version of the LMR50410 that is capable of outputting 3.3V 1.2A continuously at the price range of the 1A LMR50410 (IC at $0.50/k and BOM at $0.74/k)? Alternatively, are there any suggestions for a different topology that might reduce cost further?
Thank you very much,
Ryan Fleetham
