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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(jì)芯片的使用與BQ29311 |
| 文件頁數(shù)： | 11/54頁 |
| 文件大?。?/td> | 461K |
| 代理商： | BQ2083 |
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SLUS573 JULY 2003
www.ti.com
11
No more than 256 mAh of self-discharge or battery load estimation occurs during the discharge period.
The temperature does not drop below the low temperature thresholds programmed in
Learning Low Temp
DF
0x9b when EDV2 is detected.
The battery voltage reaches the EDV2 threshold during the discharge period and the voltage is greater than or
equal to the EDV2 threshold minus 384 mV when the bq2083V1P2 detected EDV2.
No midrange voltage correction occurs during the discharge period.
Current remains
≥
3C/32 when EDV2 or
Battery Low
% level is reached.
No overload condition exists when EDV2 threshold is reached or if RM( ) has dropped to
Battery Low%
*
FCC.
The bq2083V1P2 sets VDQ=1 in pack status when qualified discharge begins. The bq2083V1P2 sets VDQ=0 if
any disqualifying condition occurs. FCC cannot be reduced by more than 256 mAh or increased by more than
512 mAh during any single update cycle. The bq2083V1P2 saves the new FCC value to the data flash within 4
seconds of being updated.
End-of-Discharge Thresholds and Capacity Correction
The bq2083V1P2 monitors the battery for three low-voltage thresholds, EDV0, EDV1, and EDV2. The EDV
thresholds can be programmed for determination based on the overall pack voltage or an individual cell level. The
EDVV bit in
Pack Configuration
DF 0x28 configures the bq2083V1P2 for overall voltage or single-cell EDV
thresholds. If programmed for single cell EDV determination, the bq2083V1P2 determines EDV on the basis of the
lowest single-cell voltage. Fixed EDV thresholds may be programmed in
EMF/EDV0
DF 0x84-0x85,
EDV C0
Factor/EDV1
DF 0x86-0x87, and
EDV R Factor/EDV2
DF 0x88-0x89. If the CEDV bit in
Gauge Configuration
DF
0x29 is set, automatic EDV compensation is enabled and the bq2083V1P2 computes the EDV0, EDV1, and EDV2
thresholds based on the values in DF 0x84-0x8d and the battery’s current discharge rate and temperature. The
bq2083V1P2 disables EDV detection if Current( ) exceeds the
Overload Current
threshold programmed in DF 0x58
DF 0x59. The bq2083V1P2 resumes EDV threshold detection after Current( ) drops below the
Overload Current
threshold. Any EDV threshold detected is reset after charge is applied and VDQ is cleared after 10mAh of charge.
Table 2. State of Charge Based on Low Battery Voltage
THRESHOLD
RELATIVE STATE
OF CHARGE
EDV0
0%
EDV1
3%
EDV2
Battery Low %
The bq2083V1P2 uses the EDV thresholds to apply voltage-based corrections to the RM register according to
Table 1. The bq2083V1P2 performs EDV-based RM adjustments with Current( )
≥
C/32. No EDVs are set if current
<
C/32. The bq2083V1P2 adjusts RM as it detects each threshold. If the voltage threshold is reached before the
corresponding capacity on discharge, the bq2083V1P2 reduces RM to the appropriate amount as shown in Table
2. This reduction occurs only if current
≥
C/32 when the EDV threshold is detected. If RM reaches the capacity level
before the voltage threshold is reached on discharge, the bq2083V1P2 prevents RM from decreasing further until
the battery voltage reaches the corresponding threshold only on a full learning cycle discharge. RM is not held at the
associated EDV percentage on a nonlearning discharge cycle (VDQ=0) or if current
<
C/32.
If
Battery Low
% is set to zero, EDV1 and EDV0 corrections are disabled.
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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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