ACT88430 datasheet(56/74 Pages) QORVO

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

56 of 74

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ACT88430

Advanced PMU for Microcontrollers and Solid State Drive Applications

The EXT_EN pin is not functional with CMI 106. Leave the EXT_EN pin floating.

nRESET

nRESET is not functional with CMI 106. Leave the nRESET pin floating.

nRESET_AUX1

The nRESET_AUX1 is triggered from Buck3. It goes high 2ms after Buck3 goes into regulation.

nRESET_AUX2

The nRESET_AUX2 pin is not functional with CMI 106. Leave the nRESET_AUX2 pin floating.

EXT_PG

EXT_PG is the DVS control input for Buck3. When EXT_PG = L, Buck4 = 1.5V. When EXT_PG = H, Buck4 = 1.35V.

MODE

The MODE pin must be pulled high.

GPIO

The GPIO pin is the DVS control input for Buck4. When GPIO = L, Buck4 = 1.8V. When GPIO = H, Buck4 = 1.2V.

Buck1/2/3 Voltage Setting

Buck1/2/3 reference voltage is 0.8V. This sets the allowable voltage range between 0.8V to 3.988V in 12.5mV steps.

LDO1 Voltage Setting

LDO1 is configured as load switch with CMI106.

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.

Note that LDO3 is off by default, but can be enabled via I2C.

Device ID

The CMI 106 Device ID (register 0x7Dh) = 0x06h

I2C Address

The CMI 106 7-bit I2C address is 0x5Ah. This results in 0xB4h for a write address and 0xB5h for a read address.

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