ZHCSLJ2B September 2020 – July 2021 TPS62868 , TPS62869
PRODUCTION DATA
The input capacitor is the low-impedance energy source for the converter which helps to provide stable operation. A low-ESR multilayer ceramic capacitor is recommended for best filtering and must be placed between VIN and PGND as close as possible to those pins. For most applications, 8 μF is a sufficient value for the effective input capacitance, though a larger value reduces input current ripple.
The architecture of the device allows the use of tiny ceramic output capacitors with low equivalent series resistance (ESR). These capacitors provide low output voltage ripple and are recommended. To keep its low resistance up to high frequencies and to get narrow capacitance variation with temperature, TI recommends using X7R or X5R dielectrics. The recommended minimum output effective capacitance is 30 μF; this capacitance can vary over a wide range as outline in the output filter selection table.