[41] LOADSW/LDO: LDO startup might cause reset

nPM1300 Revision 2 Errata

This anomaly applies to Revision 2, build codes CAAA-D00, QEAA-D00.

It was inherited from the previous PMIC revision Engineering E.

Symptoms

The device resets at LDO startup due to voltage drop on VBAT.

Conditions

The device is powered from VBAT, and LDO is supplied by VSYS. VBAT voltage level is less than 300 mV above VSYSPOF when starting up LOADSW1/LDO1 or LOADSW2/LDO2 in LDO mode.

Consequences

The device resets, and LDO does not start up.

Workaround

Ensure that VSYSPOF is set to at least 300 mV below the minimum VBAT before starting LDO.