ACT88320QI-T datasheet(48/50 Pages) ACTIVE-SEMI

部品番号	ACT88320QI-T

部品情報	Advanced PMU with Inrush Control and Bypass Switch

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メーカー	ACTIVE-SEMI [Active-Semi, Inc]

ホームページ	http://www.active-semi.com

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ACT88320QI-T

Rev 2.0, 20-Dec-2017

Innovative PowerTM

www.active-semi.com

ActiveSwitcherTM is a trademark of Active-Semi.

48

Startup

Buck3

VIN

LDO1

Buck1

0.5ms

LDO2

CMI 108 Startup

nRESET

20ms

0.5ms

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 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 in Active mode with

normal output voltages. In Active mode, the buck converters operate with voltages set by their I2C VSET0 registers.

Pulling the DVS input low makes the IC operate in DVS mode. In DVS mode, the buck converters operate with voltages

set by their VSET1 registers.

SLEEP MODE

I2C default settings are SLEEP_MODE=1, 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 SLEEP 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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