ACT88321 datasheet(33/55 Pages) QORVO

33 / 55 page

ACT88321

Advanced PMIC with 3 Bucks, 2 LDOs, and Load Bypass Switches

Datasheet Rev. D , June 17, 2022 | Subject to change without notice

33 of 55

www.qorvo.com

each pin. Examples of system functions that can be im-

plemented are nRESET, Power Good (PG) output, in-

terrupt request or interrupt pin (nIRQ), digital output

from power okay (POK) signal from individual regulators,

digital outputs to control external regulators (EXT_EN),

digital input lines to monitor power good signals from

external regulators (EXT_PG), digital input to control

power sequencing or regulator ON/Off, control input

used to enter or exit sleep (SLEEP) and deep sleep

(DPSLP) modes, inputs to control Dynamic Voltage

Scaling (DVS) in the Buck regulators, Buck1 bypass

mode selection, and outputs for the SYSMON and

SYMWARN functions. All GPIOs are capable of the

functionality described above. All GPIOs are 5V compli-

ant and can be pulled to 5V regardless of their bias sup-

ply.

SCL, SDA

These are the I2C clock and data pins to the IC. They

have standard I2C functionality. The SCL and SDA pins

have dedicated functionality and cannot be used for

other functionality. If I2C is not needed, these pins

should be tied to either ground or to AVIN.

PGNDx

The PGNDx pins are the buck converter power ground

pins. They connect directly to the buck converters’ low

side FETs.

SW_Bx

SWx are the switch nodes for the buck converters. They

connect directly to the buck inductor on the top layer.

FB_Bx

These are the feedback pins for the buck regulators.

They should be kelvin connected to the buck output ca-

pacitors.

LDOx

These are the LDO output pins. Each LDO output must

be bypassed to AGND with a 1uF capacitor.

AGND

AGND is the ground pin for the IC’s analog circuitry and

LDOs. AGND must be connected to the IC’s PGNDx

pins. The connection between AGND and the PGNDx

pins should not have high currents flowing through it.

ACT88321 Datasheet(PDF) 33 Page - Qorvo, Inc

ACT88321 Datasheet(HTML) 33 Page - Qorvo, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

Datasheet Download

Link URL