PTN78000AAH usage issue need you hep

Minzhi Wang

We have used TI's power module - PTN78000AAH. Unfortunately, we purchaged the part - PTN78000WAH. Can we used the PTN78000WAH as PTN78000AAH to output -3.3V and -5V?

over 12 years ago

0 Tom Guerin over 12 years ago

TI__Mastermind 38230 points

PTN78000WAH is designed for step down voltage only. The PTN78000AAH is a buck boost regulator with different compensation and voltage limits.

PTN78000WAH is not recommended for replacement PTN78000AAH

Tom

0 Minzhi Wang over 12 years ago in reply to Tom Guerin

Prodigy 70 points

I don't know the different between "buck boost" and "step down".

It seems they are same serial from their part number. Actual, they are pin-pin compatible.

0 Tom Guerin over 12 years ago in reply to Minzhi Wang

TI__Mastermind 38230 points

PTN78000WAH is not electrically compatible with PTN78000AAH. There are different compensation components between the two units.

Tom

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PTN78000AAH usage issue need you hep