BQ28550-R1 datasheet(23/42 Pages) TI1

23 / 42 page

No Charger

Charger attached

Normal

Shutdown

< 2.3 V

for a period

of t > 24 ms

Over-Discharge

Voltage

DSG "OFF”

FG turn

off DSG

FG shutdown

CHG: ON

DSG: OFF

VREG OFF

CHG: ON

DSG: ON

VREG: ON

CHG: ON

DSG: OFF

VREG: ON

CHG: OFF

DSG: OFF

VREG: OFF

FG turn

on DSG

for a period

of t > 4.0 ms

for a period

of t > 24 ms

< 2.3 V

VBAT

> 2.3 V

VBAT

Not Recommended for New Designs

bq28550-R1

www.ti.com

SLUSAS4A – OCTOBER 2012 – REVISED SEPTEMBER 2014

Figure 4. Shutdown Operation

7.6.5.6 Operational Modes

The sequence of the operational modes is as follows: NORMAL to SLEEP to FULLSLEEP; FULLSLEEP to either

HIBERNATE or SHUTDOWN; or SLEEP to SHUTDOWN.

Table 6. Operational Modes

Mode

Enter Mode

Exit Mode

Comment

Go into other modes like SLEEP,

If ALL conditions such as Average

In this mode, power consumption is

FULLSLEEP, HIBERNATE, or

NORMAL

Current, Cell Voltage, and

the highest. Measurements are taken

SHUTDOWN mode if conditions are

Temperature are satisfied.

and updated every 1 s.

satisfied.

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