參數(shù)資料
型號(hào)： BQ20Z80DBT-V101
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO38
封裝： GREEN, PLASTIC, TSSOP-38
文件頁(yè)數(shù)： 3/73頁(yè)
文件大小： 1094K
代理商： BQ20Z80DBT-V101
www.ti.com
Discharge and Charge Alarms
bq20z80-V101
SLUS625D – SEPTEMBER 2004 – REVISED OCTOBER 2005
Temperature If SBS.Temperature( ) is outside of the range 10
°C to 40°C
Delta Capacity If the capacity change between suitable battery rest periods is less than 37%
Voltage
If and SBS.CellVoltage1..4( ) is within the range of 3737mV and 3800mV
The bq20z80 enables SBS.BatteryStatus( ) [TDA, FD, TCA, FC] flags to be set or cleared on the following
thresholds based on SBS.RelativeStateOfCharge( ).
DF:Operation Cfg A
CONDITION
SBS.BatteryStatus( ) FLAG ACTION
[DMODE] = 0
[DMODE] = 1
≤ DF:TDA Set %
Terminate_Discharge_Alarm is set
≥ DF:TDA Clear %
Terminate_discharge_Alarm is cleared
≤ DF:FD Set %
Fully_Discharged is set
≥ DF:FD Clear %
Fully_Discharged is cleared
SBS.RelativeStateOfCharge( )
SBS.AbsoluteOfCharge( )
≥ DF:TCA Set %
Terminate_Charge_Alarm is set
≤ DF:TCA Clear %
Terminate_Charge_Alarm is cleared
≥ DF:FC Set %
Fully_Charged is set
≤ DF:FC Clear %
Fully_Charged is cleared
The SBS.RelativeStateOfCharge( ) or SBS.AbsoluteStateOfCharge( ) based thresholds can be disabled by
setting the value to -1%.
The SBS.BatteryStatus( ) [TDA, FD] flags can also be set or cleared based on the level of SBS.Voltage( ). If the
voltage settings are not used then they should be set to extreme range values.
CONDITION
SBS.BatteryStatus( ) FLAG ACTION
≤ DF:TDA Volt Threshold for a period of DF:TDA Volt Time
Terminate_Discharge_Alarm is set
≥ DF:TDA Recovery
Terminate_discharge_Alarm is cleared
SBS.Voltage( )
≤ DF:FD Volt Threshold for a period of DF:FD Volt Time
Fully_Discharged is set
≥ DF:FD Recovery
Fully_Discharged is cleared
See the Charge Termination and Protection sections of this data sheet for further details on the setting of
Terminate_Charge_Alarm.
VALID
SIZE
DEFAULT
NAME
CLASS / SUBCLASS
FORMAT
UNITS
RANGE
(BYTES)
VALUE
TDA Set %(1)
6
TDA Clear%(1)
8
FD Set %(1)
2
FD Clear %(1)
5
Integer
-1 to 100
1
%
TCA Set %(1)
-1
TCA Clear %(1)
95
FC Set %(1)
-1
SBS Configuration / Config (49)
FC Clear %(1)
98
TDA Volt Threshold
0 to 16000
2
mV
5000
TDA Volt Time
0 to 60
1
s
5
TDA Recovery
0 to 16000
2
mV
5500
Integer
FD Volt Threshold
0 to 16000
2
mV
5000
FD Volt Time
0 to 60
1
s
5
FD Recovery
0 to 16000
2
mV
5000
(1)
Setting to –1% prevents the TDA, TCA, FD, or FC flag from being set or cleared based on state of charge.
11
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