MP2624GL datasheet(26/45 Pages) MPS

26 / 45 page

MP2624 – 4.5A SW CHARGER W/ I2C CONTROL, NVDC POWER PATH, USB OTG

MP2624 Rev.1.05

www.MonolithicPower.com

4/9/2018

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

POR

2C W rite?

H ost M ode

Start w atchdog tim er

H ost Program s R egisters

D efault M ode

R eset w atchdog tim er

R eset R egister

Re se t RE G0 1

Bit [6] ?

W a tchd og Tim e r

Expire d?

Yes

V IN>V IN_UVLO

V BATT>V BATT_UVLO

S leep C om parator A c tiv e ,

B attery FE T driv er pow er up

Yes

Figure 12: Host Mode and Default Mode

Battery Shipping Mode

Write 1 to REG07 Bit[5] turns off the battery FET

immediately when in battery discharge mode.

Write 0 to REG07 Bit[5] turns on the battery FET

again.

In applications where the battery is not

removable, it’s essential to disconnect the battery

from the system to allow the system power reset.

The MP2624 has a dedicated DISC pin to cut off

the path from the battery to the system when the

host has lost control. Once the logic at DISC is

set to low for more than 8 seconds, the battery is

disconnected from the system by turning off the

battery FET as the battery shipping mode. When

the DISC is pulled to logic high and logic low ang

keeps the low period over 0.5s, the IC exit the

shipping mode and the BATT FET is turned on

again. This control is shown in Figure 13.

Figure 13: DISC Control Function

MP2624GL 데이터시트(PDF) 26 Page - Monolithic Power Systems

MP2624GL 데이터시트(HTML) 26 Page - Monolithic Power Systems

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