This anomaly applies to Engineering A, build codes CAAA-AA0, QEAA-AA0.
Symptoms
Quiescent current of BUCK is higher than expected.
Conditions
Host software sets BUCK voltage for the first time after a power-up event, and the value is the same as the voltage already set by VSET resistor. This is done by setting BUCKnSWCTRLSEL to SWCTRL while BUCKnNORMVOUT and BUCKnVOUTSTATUS are equal.
Consequences
BUCK quiescent current increases by 1 mA.
Workaround
Host software must initially ensure BUCKnNORMVOUT and BUCKnVOUTSTATUS are not equal when BUCKnSWCTRLSEL is set. Host software can set BUCKnNORMVOUT equal to BUCKnVOUTSTATUS once an alternate BUCKnNORMVOUT has been set.