Hi,
I am using the TPS7A4501 to bias an op-amp to 12V from an input voltage of 15V. The current required is in under 100mA. The concern now is that, the customer needs very accurate power supply for the bias. Their target is 0.02%. The accuracy at 25 deg C for the device is given to be ~1%. If I calculate the accuracy over temperature range, with considering just the feedback reference voltage(ADJ pin) tolerance, it comes to around 3%. The feedback resistance variation further degrades the accuracy by its tolerance amount. Assuming i use a very accurate, 0.01% resistance, is there any way to get the output voltage accuracy close to the target value? How can we increase the accuracy of the reference?
Thanks in advance
