BQ28Z560-R1 datasheet(49/60 Pages) TI1

49 / 60 page

bq28z560-R1

www.ti.com

SLUSBD3 – APRIL 2013

Mode

Enter Mode

Exit Mode

Comment

From FULLSLEEP mode, the

The system exits this mode if the VBAT

system will go into HIBERNATE

> programmed threshold,

mode if the load current decreases

OR load current is > programmed

Enters hibernation if VBAT range is

to programmed value,

threshold,

2.4 V to 3 V with a default at 2.55 V.

HIBERNATE

OR if the cell voltage falls below the OR communication activity is on the

The load current threshold range is 0

programmed value,

bus line,

to 0.7 A with a default value of 8 mA.

OR if the host sets the command in

OR the host sets the command in

MAC.

From SLEEP mode, the system will

Exit from this mode if there is bus

In this mode, the VREG and DSG

enter this mode if the VBAT < 2.4 V

activity,

FET are turned OFF and the system

for a period longer than 24 ms and

OR the load current detected is >

SHUTDOWN

will only wake up if the charger is

the charger is not attached. The

IWAKE,

attached on the Pack+, Pack–

system can also be put in

OR the charger is connected to the

terminals.

SHUTDOWN mode through MAC.

system.

AUTOCALIBRATION

The bq28z560-R1 provides an auto calibration feature that measures the voltage offset error across SRP and

SRN from time-to-time as operating conditions change. It subtracts the resulting offset error from the normal

sense resistor voltage, VSR, for maximum measurement accuracy.

Auto calibration of the ADC begins on entry to SLEEP mode, except if Temperature() is

≤ 5°C or Temperature() ≥

45°C.

The gas gauge also performs a single offset when (1) the condition of AverageCurrent()

≤ 100 mA and (2) {cell

voltage change since last offset calibration

≥ 256 mV} or {temperature change since last offset calibration is

greater than 80°C for

≥ 60 s}.

Capacity and current measurements continue at the last measured rate during the offset calibration when these

measurements cannot be performed. If the battery voltage drops more than 32 mV during the offset calibration,

the load current has likely increased considerably and the offset calibration will be aborted.

Submit Documentation Feedback

Product Folder Links: bq28z560-R1

BQ28Z560-R1 数据表(PDF) 49 Page - Texas Instruments

BQ28Z560-R1 数据表(HTML) 49 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

数据表下载