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參數(shù)資料
| 型號： | bq2010 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | Gas Gauge IC(Gas Gauge芯片) |
| 中文描述： | 氣體計IC（電量監(jiān)測計芯片） |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 185K |
| 代理商： | BQ2010 |
Functional Description
General Operation
The bq2010 determines battery capacity by monitoring
the amount of charge input to or removed from a re-
chargeable battery. The bq2010 measures discharge and
charge currents, estimates self-discharge, monitors the
battery for low-battery voltage thresholds, and compen-
sates for temperature and charge/discharge rates.
charge measurement derives from monitoring the voltage
across a small-value series sense resistor between the
negative battery terminal and ground. The available bat-
tery charge is determined by monitoring this voltage over
time and correcting the measurement for the environ-
mental and operating conditions.
The
Figure 1 shows a typical battery pack application of the
bq2010 using the LED display capability as a charge-
state indicator. The bq2010 can be configured to display
capacity in either a relative or an absolute display mode.
The relative display mode uses the last measured dis-
charge capacity of the battery as the battery “full” refer-
ence. The absolute display mode uses the programmed
full count (PFC) as the full reference, forcing each seg-
ment of the display to represent a fixed amount of
charge. A push-button display feature is available for
momentarily enabling the LED display.
The bq2010 monitors the charge and discharge currents
as a voltage across a sense resistor (see R
in Figure 1).
A filter between the negative battery terminal and the
SR pin may be required if the rate of change of the bat-
tery current is too great.
3
bq2010
FG201001.eps
SEG6/PROG6
SEG5/PROG5
SEG4/PROG4
SEG3/PROG3
SEG2/PROG2
SEG1/PROG1
SR
DISP
SB
VCC
REF
bq2010
Gas Gauge IC
LCOM
VSS
EMPTY
DQ
VCC
C1
0.1 F
Q1
ZVNL110A
R1
RS
RB1
RB2
Load
Charger
Indicates optional.
Directly connect to VCC across 3 or 4 cells (3 to 5.6V nominal)
with a resistor and a Zener diode to limit voltage during charge.
Otherwise, R1, C1, and Q1 are needed for regulation of >4 cells.
The value of R1 depends on the number of cells.
Programming resistors (6 max.) and ESD-protection diodes are not shown.
R-C on SR may be required, application-specific.
VCC
Figure 1. Battery Pack Application Diagram—LED Display
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ2010PN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery Management |
| BQ2010PN-N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery Management |
| BQ2010SN- | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Gas Gauge IC |
| BQ2010SN-D107 | 功能描述:電池管理 NiCd/NiMH Gas Gauge 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 |
| BQ2010SN-D107 | 制造商:Texas Instruments 功能描述:IC's |
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