ACT88320QI-T datasheet(42/50 Pages) ACTIVE-SEMI

Part #	ACT88320QI-T

Description	Advanced PMU with Inrush Control and Bypass Switch

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Manufacturer	ACTIVE-SEMI [Active-Semi, Inc]

Direct Link	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.

42

Hardware Configuration

Because the SM2262_M2_S045A does not use the inrush control circuitry, the design connects OVSNS, OVSNS_M,

and OVGATE to ground. The inrush circuitry can be used with the ACT88320QI104 by connecting them per the

datasheet guidelines.

Startup

Buck3

VIN

LDO2

LS

0.5ms

Buck1

CMI 104 Startup

nRESET

20ms

0.5ms

1ms

0.5ms

I2C Address

The ACT88320 7-bit I2C address is 0x25h. Use address 0x4Ah when writing and 0x4Bh when reading.

GPIO1 (pin 13) - nRESET

GPIO1 is configured as an open drain nRESET. nRESET goes open drain 20ms after LDO2 goes into regulation.

GPIO2 (pin 14) – Buck2_VID

GPIO2 is configured as a VID input for Buck2. When Pin 14 = 1, Buck2 = 1.2V. When Pin 14 = 0, Buck2 = 1.8V. This

allows the ACT88320 to put the SM2262 and SM2263 in different power states. Pin 14 can be changed at any time to

change the Buck2 output voltage, but actual usage depends on the application.

GPIO3 (pin 12) – Buck3_VID

GPIO3 is configured as a VID input for Buck3. When Pin 12 = 1, Buck3 = 1.5V. When Pin 12 = 0, Buck2 = 1.35V. This

allows the ACT88320 to put the SM2262 and SM2263 into different power states. Pin 12 can be changed at any time to

change the Buck3 output voltage, but actual application depends on the DDR memory used.

GPIO4 (pin 11) – Buck1_VID

GPIO4 is configured as a VID input for Buck1. When Pin 11 = 1, Buck1 = 0.9V. When Pin 11 = 0, Buck1 = 0.75V. This

allows the ACT88320 to put the SM2262 and SM2263 into different power states. Pin 11 can be changed at any time to

change the Buck1 output voltage, but actual application depends on the DDR memory used.

SLEEP MODE

I2C default settings are SLEEP_MODE=0, SLEEP_EN=0, and SLEEP=0. Refer to the SLEEP State paragraph for details

on how to enter SLEEP Mode.

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