ACT88430 datasheet(68/74 Pages) QORVO

68 / 74 page

Data Sheet Rev. G, August 2021 | Subject to change without notice

68 of 74

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ACT88430

Advanced PMU for Microcontrollers and Solid State Drive Applications

nRESET_AUX2

The nRESET pin is not used and can be pulled to GND or left floating.

EXT_PG

EXT_PG is configured as an input to enable Buck2. When EXT_PG is L, Buck2 is disabled. When EXT_PG is H, Buck2

is enabled. Note that LDO1 is the input trigger to turn Buck2 on. After Buck2 is in regulation, EXT_PG can then turn it

on and off.

MODE

The MODE pin configures Buck1 into either bypass or switcher mode. MODE must be connected to AGND to

configure Buck1 into switcher mode.

GPIO

GPIO is not used and must be connected to AGND.

PWREN

PWREN is configured as an input. When PWREN = H, the IC operates in Active Mode. When PWREN = L, the IC

operates in SLEEP Mode.

Buck1/4 Voltage Setting

Buck1/4 reference voltage is 0.8V. This sets the programmable voltage range between 0.8V to 3.998V in 12.5mV

steps.

Buck2/3 Voltage Setting

Buck2/3 reference voltage is 0.6V. This sets the programmable voltage range between 0.6V to 3.000V in 9.375mV

steps.

LDO1 Voltage Setting

The LDO1 reference voltage is 0.8V. This sets the programmable voltage range between 2.0V to 3.575V in 25mV

steps.

LDO2/3 Voltage Setting

The LDO2/3 reference voltage is 0.8V. This sets the allowable voltage range between 2.0V to 3.575V in 25mV steps.

Device ID

The CMI 118 Device ID (register 0x7Dh) = 0x18h

I2C Address

The CMI 118 7-bit I2C address is 0x53h. This results in 0xA6h for a write address and 0xA7h for a read address.

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