MPF0900AMBA2ES datasheet(91/205 Pages) NXP

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NXP Semiconductors

PF09

Nine-channel power management IC with advanced system safety monitoring

VDIG_OV_S

VDIG overvoltage status

No OV detected

OV detected

Table 106. VDIG overvoltage status

13.1.3 Internal bandgap references

The PF09 is provided with two fully independent bandgap references as part of the functional safety

architecture.

The first bandgap regulator is dedicated to providing a voltage reference for the output voltage generation,

and it is referred to as main bandgap through this document. The second bandgap regulator is used to provide

a voltage reference to the OV/UV monitors, as well as other safety related blocks, and it is referred to as

monitoring bandgap throughout this document.

13.2 System voltage generation

13.2.1 VAON

The VAON regulator is a standalone low-power LDO with low dropout operation. It supports an Always-on mode

to provide voltage to the low-power domains intended to remain on during the PMIC off states. The VAON

supports configurable output voltage with nominal current of 10 mA.

The VAON output is programmable to 1.8 V, 3.0 V or 3.3 V with up to +/- 2% accuracy.

VAON[1:0]

VAON output voltage (V)

Off

1.8

3.0

3.3

Table 107. VAON output voltage

By default, the VAON regulator uses the OTP_VAON[1:0] bits to set the initial voltage configuration as soon as

power is applied.

The VAON can be configured in two different modes of operation based on the value of the OTP_VAON[1:0]

and the OTP_VAON_SEQ[7:0] bits.

OTP_VAON[1:0]

OTP_VAON_SEQ[7:0]

Mode

Control

Don’t care

System regulator

Default off (enabled via I2C)

01, 10, 11

0x00

Always-on regulator

Enabled after fuse load

01, 10, 11

Not 0x00

System regulator

Enabled in Power-

up sequence

Table 108. VAON modes

13.2.1.1 Always-on mode

When power is applied for the first time, the PF09 will perform an initial configuration cycle to load the OTP

configuration of the VAON regulator. If the VAON is set as an Always-on regulator, the VAON output will be

enabled after fuse load.

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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