Part Number:TPS763-Q1
Hi,
Currently I got a question from customer that TPS763-Q1 datasheet mentioned 0.3-10 ESR is needed for a 4.7uF Output capacitor. I checked our part with Rohm's BU33SD2MG(currently on customer's board) and our device need much more ESR than Rohm's. This being said customer should series a resistor at the output(ceramic capacitor's ESR not enough) in order to make sure the stability in all conditions. See below screenshot I take from Rohm's datasheet(First pic) and our datasheet(second pic).
Image may be NSFW.
Clik here to view.
Image may be NSFW.
Clik here to view.
I also checked other LDOs and found that no one specifically pointed out the ESR in application circuit like our TPS763-Q1 did(See below picture). Why TPS763-Q1 requires more ESR compare to others especially Rohm's BU33SD2MG? Can you help this in detail? Thanks
