ZHCSHQ2B November 2017 – May 2018 TPS62821 , TPS62822 , TPS62823
PRODUCTION DATA.
The output voltage range of TPS6282x is 0.6V to 4V. While stability is a first criteria for the output filter selection (L and COUT), the output capacitor value also determines transient response behavior and ripple of VOUT. The recommended typical value for the output capacitor is 2x10µF (or 1x 22µF) and can be small ceramic capacitors with low equivalent series resistance (ESR). For lower VOUT (VOUT ≤ 2V) and where only moderate load transients are present, 10µF can be sufficient. In either case a minimum effective output capacitance of 5µF should be present.
To keep low resistance and to get a narrow capacitance variation with temperature, it is recommended to use X7R or X5R dielectric. Using an even higher value has advantages like smaller voltage ripple and tighter output voltage accuracy in PSM.