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參數(shù)資料
| 型號： | BQ2083 |
| 英文描述： | Silicon Bridge Rectifiers |
| 中文描述： | 銀紫荊星章符合電量監(jiān)測計芯片的使用與BQ29311 |
| 文件頁數(shù)： | 13/54頁 |
| 文件大小： | 461K |
| 代理商： | BQ2083 |
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SLUS573 JULY 2003
www.ti.com
13
Self-Discharge
The bq2083V1P2 estimates the self-discharge of the battery to maintain an accurate measure of the battery
capacity during periods of inactivity. The bq2083V1P2 makes self-discharge adjustments to RM( ) every 1/4
seconds when awake and periodically when in sleep mode. The period is determined by
Sleep Timer
DF 0xe7.
The self-discharge estimation rate for 25
°
C is doubled for each 10 degrees above 25
°
C or halved for each 10 degrees
below 25
°
C. The following table shows the relation of the self-discharge estimation at a given temperature to the rate
programmed for 25
°
C (Y% per day programmed in DF 0x2c).
Table 4. Self-Discharge for Rate Programmed
TEMPERATURE
(
°
C)
Temp
<
10
10
≤
Temp
<
20
20
≤
Temp
<
30
30
≤
Temp
<
40
40
≤
Temp
<
50
50
≤
Temp
<
60
60
≤
Temp
<
70
70
≤
Temp
SELF-DISCHARGE RATE
1/4 Y% per day
1/2 Y% per day
Y% per day
2Y% per day
4Y% per day
8Y% per day
16Y% per day
32Y% per day
Time Days
0
200
400
600
800
1000
1200
0
10
20
30
40
50
60
70
TA = 15
°
C
CAPACITY
vs
TIME
TA = 35
°
C
TA = 25
°
C
TA = 45
°
C
C
Figure 4. Self-Discharge at 2.5%/Day at 25
°
C
Figure 4 illustrates how the self-discharge estimate algorithm adjusts RemainingCapacity( ) versus temperature.
Battery Electronic Load Compensation
The bq2083V1P2 can be configured to compensate for a constant load (as from battery electronics) present in the
battery pack at all times. The bq2083V1P2 applies the compensation continuously when the charge or discharge
is below the digital filter. The bq2083V1P2 applies the compensation in addition to self-discharge. The
compensation occurs at a rate determined by the value stored in
Electronics Load
DF
0x2d. The compensation range
is 0
μ
A–765
μ
A in steps of approximately 3
μ
A
.
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| BQ20832DBT | 制造商:Texas Instruments 功能描述: |
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| BQ2083DBT | 功能描述:電池管理 SBS-Cmplnt Gas Gauge for Use w/BQ29311 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| BQ2083DBTG4 | 功能描述:電池管理 SBS-Cmplnt Gas Gauge for Use w/BQ29311 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| BQ2083DBTR | 功能描述:電池管理 SBS-Cmplnt Gas Gauge for Use w/BQ29311 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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