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參數(shù)資料
| 型號： | bq2050H |
| 廠商： | Benchmark Technology Group |
| 英文描述： | Low-Cost Lithium Ion Power Gauge IC(低價格鋰離子電源氣體Gauge芯片) |
| 中文描述： | 低成本鋰離子動力計IC（低價格鋰離子電源氣體計芯片） |
| 文件頁數(shù)： | 13/24頁 |
| 文件大小： | 213K |
| 代理商： | BQ2050H |
Primary Status Flags Register (FLGS1)
The FLGS1 register (address = 01h) contains the pri-
mary bq2050H flags.
The
charge status
flag (CHGS) is asserted when a
valid charge rate is detected.
valid when V
SRO
> V
SRQ
. A V
SRO
of less than V
SRQ
or
discharge activity clears CHGS.
Charge rate is deemed
The CHGS values are:
Where CHGS is:
0
Either discharge activity detected or V
SRO
≤
V
SRQ
1
V
SRO
> V
SRQ
The
battery replaced
flag (BRP) is asserted whenever
the bq2050H is reset either by application of V
CC
or by a
serial port command. BRP is reset when either a valid
charge action increments NAC to be equal to LMD, or a
valid charge action is detected after the EDV1 flag is as-
serted. BRP = 1 signifies that the device has been reset.
The BRP values are:
Where BRP is:
0
Battery is charged until NAC = LMD or dis-
charged until the EDV1 flag is asserted
1
bq2050H is reset
The
protector status
flag (PSTAT) provides information
on the state of the overvoltage protector within the Li-
Ion battery pack. The PSTAT flag is asserted whenever
this input is high and is cleared when the input is low.
The PSTAT values are:
Where PSTAT is:
0
PSTAT input is low (PSTAT < 0.5V)
1
PSTAT input is high (PSTAT > 2.5V)
The
capacity inaccurate
flag (CI) is used to warn the
user that the battery has been charged a substantial
number of times since LMD has been updated. The CI
flag is asserted on the 64th charge after the last LMD
update or when the bq2050H is reset. The flag is cleared
after an LMD update.
The CI values are:
Where CI is:
0
When LMD is updated with a valid full dis-
charge
1
After the 64th valid charge action with no
LMD updates or the bq2050H is reset
The
valid discharge
flag (VDQ) is asserted when the
bq2050H is discharged from NAC=LMD.
mains set until either LMD is updated or one of three
actions that can clear VDQ occurs:
The flag re-
I
When NAC has been reduced by more than 6%
because of self-discharge since VDQ was set.
I
A valid charge action sustained at V
SRO
> V
SRQ
for
at least 2 NAC updates.
I
The EDV1 flag was set at a temperature below 0°C
The VDQ values are:
Where VDQ is:
0
Self-discharge of 6% of NAC, valid charge
action detected, EDV1 asserted with the
temperature less than 0°C, or reset
1
On first discharge after NAC = LMD
13
bq2050H
FLGS1 Bits
7
6
5
4
3
2
1
0
-
-
-
CI
-
-
-
-
FLGS1 Bits
7
6
5
4
3
2
1
0
CHGS
-
-
-
-
-
-
-
FLGS1 Bits
7
6
5
4
3
2
1
0
-
BRP
-
-
-
-
-
-
FLGS1 Bits
7
6
5
4
3
2
1
0
-
-
PSTAT
-
-
-
-
-
Command Code Bits
7
6
5
4
3
2
1
0
-
AD6 AD5
AD4
AD3
AD2
AD1
AD0
(LSB)
FLGS1 Bits
7
6
5
4
3
2
1
0
-
-
-
-
VDQ
-
-
-
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