ACT88320 datasheet(41/57 Pages) QORVO

41 / 57 page

Data Sheet Rev. E, November 2019 | Subject to change without notice

41 of 57

www.qorvo.com

ACT88320

Advanced PMU with Inrush Control and Bypass Switch

Hardware Configuration

This CMI is intended to have EXT_EN connected directly to EXT_PG. This configuration effectively gives Buck1 a 2.5ms

turn-on delay from Buck2.

I2C Address

The ACT88320 7-bit I2C address is 0x25h. Use address 0x4Ah when writing and 0x4Bh when reading.

GPIO1 (pin 13) - nRESET

GPIO1 is configured as an open drain nRESET. nRESET goes open drain 60ms after LDO1 goes into regulation.

GPIO2 (pin 14) - EXT_EN

GPIO2 is configured as an open drain EXT_EN. EXT_EN goes high 2.5ms after Buck2 goes into regulation. EXT_EN

can be used to sequence on an external supply. It is intended to be directly connected to EXT_PG to effectively turn on

Buck1 2.5ms after Buck2 turns on.

GPIO3 (pin 12) - nIRQ

GPIO3 is configured as an open drain nIRQ.

GPIO4 (pin 11) – EXT_PG

GPIO4 is configured as an external power good input. EXT_PG is the input trigger for Buck1. It is intended to be

connected directly to EXT_PG to effectively turn on Buck1 2.5ms after Buck2 turns on.

SLEEP MODE

I2C default settings are SLEEP_MODE=0, SLEEP_EN=0, and SLEEP=0. Refer to the SLEEP State paragraph for details

on how to enter SLEEP Mode.

DPSLP MODE

I2C default settings are DPSLP_MODE=1, DPSLP_EN=0, and DPSLP=0. Refer to the DPSLP State paragraph for

details on how to enter DPSLP Mode.

VSYSMON

VSYSMON = 3.0V

Buck1 Voltage Setting

Buck 1 reference voltage is 0.8V. This sets the allowable voltage range between 0.8V and 3.998V in 12.5mV steps.

LDO Voltage Setting

The LDO reference voltage is 0.8V. This sets the allowable voltage range between 0.8V and 3.998V in 12.5mV steps.

ACT88320 Datasheet(PDF) 41 Page - Qorvo, Inc