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參數(shù)資料
| 型號(hào)： | bq2011K |
| 廠商： | Benchmark Technology Group |
| 英文描述： | Gas Gauge IC for High Discharge Rates(用于高放電率的氣體Gauge芯片) |
| 中文描述： | 氣體計(jì)IC，高放電率（用于高放電率的氣體計(jì)芯片） |
| 文件頁(yè)數(shù)： | 2/20頁(yè) |
| 文件大?。?/td> | 175K |
| 代理商： | BQ2011K |
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Pin Descriptions
LCOM
LED common
Open-drain output switches V
CC
to source cur-
rent for the LEDs. The switch is off during ini-
tialization to allow reading of PROG
1-4
pull-up
or pull-down program resistors. LCOM is high
impedance when the display is off.
SEG
1
–
SEG
5
LED display segment outputs
Each output may activate an LED to sink
the current sourced from LCOM, the battery,
or V
CC
.
PROG
1
–
PROG
4
Programmed full count selection inputs
(dual function with SEG
1
- SEG
4
)
These three-level input pins define the pro-
grammed full count (PFC) in conjunction
with SPFC pin, define the display mode and
enable or disable self-discharge.
SPFC
Programmed full count selection input
This three-level input pin along with PROG
1-3
define the programmed full count (PFC)
thresholds described in Table 1. The state of
the SPFC pin is only read immediately after
a reset condition.
SR
Sense resistor input
The voltage drop (V
SR
) across the sense re-
sistor R
S
is monitored and integrated over
time to interpret charge and discharge activ-
ity. The SR input is tied to the low side of
the sense resistor and battery pack ground
(see Figure 1). V
SR
> V
SS
indicates discharge,
and V
SR
< V
SS
indicates charge. The effec-
tive voltage drop, V
SRO
, as seen by the
bq2011K is V
SR
+ V
OS
(see Table 4).
NC
No connect
DISP
Display control input
DISP floating allows the LED display to
be active during certain charge and dis-
charge
conditions.
low activates the display for 4
±
0.5 seconds.
Transitioning
DISP
SB
Secondary battery input
This input monitors the single-cell voltage
potential through a high-impedance resis-
tive divider network for the end-of-discharge
voltage (EDV) threshold and maximum cell
voltage (MCV).
RBI
Register backup input
This input is used to provide backup poten-
tial to the bq2011K registers during periods
when V
CC
< 3V. A storage capacitor should
be connected to RBI.
DQ
Serial I/O pin
This is an open-drain bidirectional pin.
REF
Voltage reference output for regulator
REF provides a voltage reference output for
an optional micro-regulator.
V
CC
Supply voltage input
V
SS
Ground
2
bq2011K
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ2011KSN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Battery Management |
| BQ2011KSN- | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Gas Gauge IC for High Discharge Rates |
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| BQ2011KSN-N | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Gas Gauge IC for High Discharge Rates |
| BQ2011PN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery Management |
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