MPF0900AMBA2ES datasheet(72/205 Pages) NXP

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NXP Semiconductors

PF09

Nine-channel power management IC with advanced system safety monitoring

The RSTB_S2H flag is provided to sense a real time short-to-high condition in the RSTB pin. When the RSTB

pin is being driven low internally, and the RSTB_S is sensing a high state, the RSTB_S2H flag is set HIGH until

this condition is removed.

The RSTB_S2L flag is provided to sense a real-time short-to-low condition in the RSTB pin. When the RSTB

pin is released high internally, and the RSTB_S is sensing a low state, the RSTB_S2L flag is set HIGH until

condition is removed.

The system can request a self-reset pulse via the SYS_CMD bits. When SYS_CMD = 0x9C, the RSTB pin will

assert for 100 μs and then de-assert to its normal state.

When the RSTB pin is directed to assert by the MCU, the PF09 will monitor the pin during the 100 μs assertion

time to ensure the pin is able to go low. If the pin is not able to go low, the device detects a short-to high-event

and asserts the RSTB_FLT_I flag.

12.8.6 PGOOD

PGOOD is a dedicated open-drain output used as a power good (PG) indicator. In the application, PGOOD can

be pulled up to VDDIO (1.8 V or 3.3 V) with a 10 kΩ to 100 kΩ external resistor.

The PF09 implements an individual power good monitor for every regulator and voltage monitor available in the

device. Each PG monitor reports its status via I2C registers.

The status of the PGOOD pin is a logic AND function of the internal PG signals of the selected voltage monitors.

The selection of the regulators being reported by the PGOOD pin is done via the PG_EN bits.

PG_EN bits

Option

PGOOD Control

SW1 does not control PGOOD

SW1_PG_EN

SW1 controls PGOOD

SW2 does not control PGOOD

SW2_PG_EN

SW2 controls PGOOD

SW3 does not control PGOOD

SW3_PG_EN

SW3 controls PGOOD

SW4 does not control PGOOD

SW4_PG_EN

SW4 controls PGOOD

SW5 does not control PGOOD

SW5_PG_EN

SW5 controls PGOOD

LDO1 does not control PGOOD

LDO1_PG_EN

LDO1 controls PGOOD

LDO2 does not control PGOOD

LDO2_PG_EN

LDO2 controls PGOOD

LDO3 does not control PGOOD

LDO3_PG_EN

LDO3 controls PGOOD

VAON does not control PGOOD

VAON_PG_EN

VAON controls PGOOD

Table 72. Voltage reels PGOOD triggers

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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