MP2667

– 1A, SINGLE-CELL CHARGER W/ I2C CONTROL, POWER PATH

MP2667 Rev. 1.0

www.MonolithicPower.com

21

5/8/2019

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stock

mode,

or

to

system

reset

mode,

depending on the application (see Table 3).

1. Shipping Mode:

Entering shipping mode: The register bit

FET_DIS (REG06 bit[5]), makes the IC

enter

shipping

mode.

During

normal

operation, the battery FET is turned on (the

bit is 0). If this bit is set to 1 through the I2C,

the battery FET is turned off, and the

MP2667 enters shipping mode.

The FET_DIS bit is reset to 0 automatically

after the battery FET is turned off.

Exiting shipping mode: The IC can exit

shipping mode by pulling INT down for a

very short time (>500ms).

2. Reset Mode:

The IC can use INT to cut off the path from

the

battery

to

the

system

under

the

condition

needed

to

reset

the

system

manually.

If the battery FET is on, once the logic at

INT is set to low for more than 8s, the

battery is disconnected from the system by

turning off the battery FET. The battery can

be connected in and out of the system by

controlling INT (see Figure 7).

8s

0.5s

INT

BATFET Gate

Shipping

Mode

Figure 7: Disconnection Function Operation

Profile

Table 3: Battery Disconnection Control

FET On/Off

Change by

Control

INT Pin

H to L for 8s

H to L for

500ms

Reset Mode

Exit Shipping

Mode

LDO FET

x

x

Battery FET

(charging)

Off

On

Battery FET

(discharging)

Off

On