ACT88320 datasheet(39/57 Pages) QORVO

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

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ACT88320

Advanced PMU with Inrush Control and Bypass Switch

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 20ms after Buck3 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.

GPIO3 (pin 12) - nIRQ

GPIO3 is configured as an open drain nIRQ.

GPIO4 (pin 11) - DVS

GPIO4 is configured as a DVS input. Pulling the DVS input high makes the ACT88320 operate with normal output

voltages. The buck converters operate with voltages set by their I2C VSET0 registers. Buck3 output is 1.15V. Pulling the

input low makes the IC operate in DVS mode and the buck converters operate with voltages set by their VSET1 registers.

Buck3 output is 0.9V

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.

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