ACT88320 datasheet(20/57 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

RESET

Power

Sequence

Start

POWER ON

(Active)

OVUV Fault

Thermal Fault

Thermal Shutdown

Fault & DIS_OTS = 0

Thermal Fau lt

Cleared

SLEEP

Clears all registers and

defaults to original NVM

settings in RESET state

VIN_OV or VIN_UV in

any state puts the IC in

RESET state

Example for a typical configuration.

Other transitions are possible with factory

programmed configurations.

DPSLP

(Deep Sleep)

(DPSLP_EN = 1 & PWREN = 0 & DPSLP MODE = 1)

(DPSLP_EN = 1 & PWREN = 0 & DPSLP MODE = 0

& DPSLP Bit = 1)

PWREN = 1

VIN_NOT_OK

UV> VIN > OV

SLEEP Bit = 1 &

SLEEP_EN = 1

OVUV Fault

Retry Timer

(100ms)

DIS OVUV = 0 &

Mask = 0

Clear DPSLP_EN &

SLEEP_EN if set to 1

up on entering OVUV

Fault State

Clear DPSLP_EN &

SLEEP_EN if set to 1

upon en tering Thermal

Fault State

VIN_OK

UV < VIN < OV

SLEEP Bit = 1 &

SLEEP_EN = 1

SLEEP Bit = 0 OR

SLEEP_EN = 0

Figure 1 PWREN State Machine

Special consideration is needed for DPSLP state in with

a non-I2C system. When PWREN is first toggled high

after power up, the ACT88320 detects the first rising

transition of PWREN from 0 to 1 and sets the

DPSLP_EN register bit to 1. On the falling transition of

PWREN from 1 to 0, DPSLP state is entered. In a con-

dition when the system is powered up when PWREN =

1, PWREN must be toggled to 0 and back to 1 to set the

DPSLP_EN bit. The next falling PWREN transition puts

the IC into the DPSLP state. While in DPSLP mode, if

there is a fault condition such as system UV or OV or a

thermal fault, the IC resets the DPSLP_EN bit back to 0

when it exits DPSLP mode. This requires PWREN to be

toggled high to set the DPSLP_EN to 1 again and then

toggled back low to enter DPSLP state again. The IC

does not automatically go back into DPSLP state after

exiting the DPSLP state due to fault conditions.

ACT88320 Datasheet(PDF) 20 Page - Qorvo, Inc

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