MP2617H

– SINGLE-CELL SWITCHING CHARGER WITH NVDC POWER PATH

MP2617H Rev. 1.03

www.MonolithicPower.com

21

1/15/2018

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Additionally, if the input source is removed, the

MP2617H

turns

on

the

40m

Ω MOSFET,

allowing the battery to power the system load to

maintain the operation of the portable device.

Operation Flow Chart

Figure 5 shows the operation flow chart of the

MP2617H.

Figure

6

shows

the

operation

process.

POR

Chip Enable?

No

Enable BG

Yes,

POR="0"

Yes

BGOK="1"

BGOK="0"

No，

POR="1"

Enable VREF LDO

Yes,

UVLO="0"

No,

UVLO="1"

Yes

Enable DC-DC

DC-DC soft starts

200mV,3.6V

DC-DC starts ready?

Enable Battery

Charger

ISET OK?

Battery power

system switch

turns off

Yes

No

Yes

No

Yes

System shuts down

No power to system

Battery power system

Enable discharge limit

No