MPF0900AMBA2ES datasheet(29/205 Pages) NXP

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NXP Semiconductors

PF09

Nine-channel power management IC with advanced system safety monitoring

VIN_OV monitoring is provided with a programmable debounce to select the filtering time to detect

a VIN_OV event. The default value for the VIN_OV_DBNC[1:0] is set in the OTP registers via the

OTP_VIN_OV_DBNC[1:0] bits.

VIN_OV_DBNC[1:0]

VIN OV debounce value (us)

100

1000

Reserved

Table 25. VIN_OV_DBNC bit field

Symbol

Description

Min

Typ

Max

Unit

VIN_OV

VIN overvoltage rising

5.65

5.8

5.95

VIN_OV_HYS

VIN overvoltage hysteresis

100

125

Table 26. VIN_OV electrical characteristics

12.3 Device power-up

12.3.1 IC startup

The PF09 provides a quick startup time from the point VIN crosses the VIN_POR threshold until the RSTB pin is

released.

For practical purposes, the power-up timing is considered from the wake-up event (exit ULPOFF or exit the

DFS) until the device is ready to start the power-up sequence (PWRUP_READY), assuming no event is gating

the power-up sequence.

In devices with high safety integrity levels (ASIL/SIL) where the LBIST is available, the LBIST routine will be

performed as part of the initial configuration right after the wake-up event and will be followed by a fresh fuse

In devices with no LBIST available, the initial configuration requires only a single fuse loading event, thus

reducing the overall turn-on time.

When VAON is configured as a system regulator, the VAON supply can be configured to turn on during the

power-up sequence, and it will not be considered as a gating factor to reach PWRUP_READY condition.

Pulling up the PWRON pin to VIN or VAON is possible to ensure an automatic PWRON event at cold boot

before the system MCU can take over the control of the PWRON pin. In that scenario, the PWRON event will be

evaluated after the fuse-loading routine is finished (entering the LPOFF state).

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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