ZHCSAM1F December 2012 – December 2017 TPS7A66-Q1 , TPS7A69-Q1
PRODUCTION DATA.
The high impedance of the FB pin makes the regulator sensitive to parasitic capacitances that may couple undesirable signals from nearby components (especially from logic and digital devices, such as microcontrollers and microprocessors); these capacitive-coupled signals may produce undesirable output voltage transients. In these cases, TI recommends the use of a fixed-voltage version of the TPS7A66-Q1, or isolation of the FB node by flooding the local PCB area with ground-plane copper to minimize any undesirable signal coupling.