EV5424-R-00A datasheet(19/44 Pages) MPS

19 / 44 page

MP5424

– 5V POWER MANAGEMENT IC WITH I2C AND MTP

MP5424 Rev. 1.0

MonolithicPower.com

12/6/2021

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

VINx

DC/DC Converter,

LDO, and LSWO

Output

Time Slot Number

Time

Slot

RSTO

RSTO_DELAY

No Supply

PWRON

Time

Slot

Figure 5: Start-Up Sequence

Buck Regulators, LDOs, and Load Switch On

The MP5424 provides a configurable start-up

sequence. See the MTP E-Fuse Configuration

Table on page 26 for details on which bits set the

time slot number for each channel.

Shutdown Factor

The PMIC shutdown factors are PWRON_OFF

and EN1. They are described below.

PWRON_OFF

If the PWRON pin is pulled low (PWRON_MODE

= 0) or if there is a falling edge on PWRON

(PWRON_MODE = 1), then the PMIC enters the

shutdown

sequence.

See

the

PWRON

Functions section on page 21 for more details.

EN1

If the EN1 function is enabled, and EN1 is pulled

low (EN1_INV defines EN1 as active high) or

EN1 is pulled high (EN1_INV defines EN1 as

active low), then the power rails controlled by

EN1 enter the shutdown sequence. See the EN1

Functions section on page 22 for more details.

Shutdown Sequence

There are 16 selectable time slots for the

shutdown

sequence.

All

the

DC/DC

converters, LDOs, and load switch can be

configured between 0 and 15 time slots by the

MTP e-fuse. The delay time between each time

slot can be adjusted via the MTP TIME_SLOT

bits. The time does not change with fSW.

RSTO is pulled low prior to when the DC/DC

converters, LDOs, and load switch turn off. The

DC/DC converter and LDO shutdown sequences

are

set

POWER_OFF_SLOT_NO

and

POWER_OFF_SLOT_MODE. See the MTP E-

Fuse Configuration Table on page 26 for more

details.

VIN

PWRON

DC/DC, LDO,

and LSWO

Output

Time_

SLOT

RSTO

Power-Off Sequence

No Supply

UVLO

Power Off

Time_

SLOT

Time Slot Number

Figure 6: Shutdown Sequence (PWRON_MODE = 0)

EV5424-R-00A Datasheet(PDF) 19 Page - Monolithic Power Systems

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