Datasheet

Not Recommended for New Designs
VSP2582
SBES002B –JUNE 2008–REVISED JUNE 2011 www.ti.com
Because of the high operating speed, the converter also generates high-frequency current transients and noises
that are fed back into the supply and reference lines. This interference requires the supply and reference pins to
be sufficiently bypassed. In most cases, a 0.1-μF ceramic-chip capacitor is adequate to decouple the reference
pins. Supply pins should be decoupled to the ground plane with a parallel combination of tantalum (1 μF to 22
μF) and ceramic (0.1 μF) capacitors. The effectiveness of the decoupling largely depends on the proximity to the
individual pin. V
DD
should be decoupled to the proximity of DGND. Special attention must be paid to the
bypassing of COB and BYPP because these capacitor values determine the important analog performance of the
device. Although the recommend capacitor values for COB and BYPP are 0.1 μF and 1000 pF, respectively, it is
better to adjust the capacitor for BYPP at the case.
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