MPF0900AMBA2ES datasheet(46/205 Pages) NXP

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NXP Semiconductors

PF09

Nine-channel power management IC with advanced system safety monitoring

aaa-056053

SW3

LDO1

SW2

SW1

GPOx

RSTB

INTB

RUN

mode

PWRDN sequence

from RUN to STBY

STBY

mode

PWRDN_I

PWRUP_I

PWRUP sequence

from STBY to RUN

RUN

mode

Figure 14. RUN and STANDBY transitions

12.5.1 RUN to STANDBY transition

When transitioning from RUN to STANDBY, the power-down sequencer is started if any of the system regulators

in the power-up sequence needs to be turned off in the STANDBY State.

Regulators with the bits _SEQ[7:0] = 0x00 and whose STANDBY configuration is different from the RUN

configuration will change to the corresponding STANDBY mode first, followed by the regulators / GPIOs with a

power-down slot assigned in the _SEQ[7:0] bits.

If system regulators are not turned off during this transition, the power-down sequence for such regulators is

ignored and the voltage transition happens at the beginning of the power-down sequence.

The PWRDN_I interrupt is set at the end of the transition from RUN to STANDBY when the Power-down

sequence is finished.

Note that any associated dynamic voltage scaling (DVS) transitions on the switching regulators will be

considered within the power-down sequence, and the PWRDN_I interrupt will be asserted only after all the

switching regulators have finished their DVS cycle during the transition. However, because the LDO regulators

are discharged passively through the internal pulldown resistor, the changes in the LDO regulators are

considered finished right after the new configuration is applied, without taking into consideration the discharge

time due to the external capacitor.

12.5.2 STANDBY to RUN transition

When transitioning from the STANDBY state to the RUN state, the time-based Power-up sequence is followed

by any of the system regulators set up to enabled during the transition from STANDBY to RUN.

If none of the regulators toggle from OFF to ON, and only voltage changes are being performed when exiting

the STANDBY state, the changes in the system regulators are made simultaneously rather than going through

the power-up sequencer.

During the transition from STANDBY to RUN, for regulators with the bits _SEQ[7:0] = 0x00 and whose RUN

configuration is set to OFF, the regulator will be disabled first, before the power-up sequencer is started.

The PWRUP_I interrupt is set when the device has finished transitioning from STANDBY to RUN.

PF09

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 1.3 — 16 December 2025

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