8.2.2 Detailed Design Procedure

For this design example, the 1.2-V, fixed-version TPS7A1012 device is selected. Use a 4.7-µF input capacitor to minimize transient currents drawn from the DC/DC convertor. Use a 4.7-µF output capacitor for optimized load transient response. The dropout voltage (V_DO) is kept within the TPS7A10 dropout voltage specification for the 1.2-V output voltage option inorder to keep the device in regulation under all load and temperature conditions for this design. The high-PSRR and low-noise measurements for this design example are given in the Thermal Dissipation section.