Hi, we do not like the QFN package of the TPS7A4700 since we have failed many times. While we can keep using TSP7A3301 since it has a through hole package, we would like to ask whether you have any similar products with easier soldering package to replace TPS7A4700. I find LM2576, but not sure whether it can be used in combination with TPS7A3301 to supply +/- 15V. And I do not find the noise level about this device. What we want are DC/DC regulators where input is +/-(16.5-22 V), output want to be +/-(15-17 V), I out(min)=250 mA, better find something around 1A or 2A. Noise is as low as possible. Hope you can find some chips that are not surface mount or at least not QFN! Thank you!
Best,
Min
