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參數(shù)資料
| 型號： | 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IC，高放電率（用于高放電率的氣體計芯片） |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 175K |
| 代理商： | BQ2011K |
1
Features
Conservative and repeatable
measurement of available charge
in rechargeable batteries
Designed for portable equipment
such as power tools with high dis-
charge rates
Designed for battery pack inte-
gration
-
120
μ
A typical standby current
(self-discharge estimation mode)
-
Small size enables imple-
mentations in as little as
12
square inch of PCB
Direct drive of LEDs for capacity
display
Self-discharge compensation us-
ing internal temperature sensor
Simple single-wire serial commu-
nications port for subassembly
testing
16-pin narrow SOIC
General Description
The bq2011K Gas Gauge IC is in-
tended for battery-pack installation to
maintain an accurate record of a bat-
tery’s available charge. The IC moni-
tors a voltage drop across a sense re-
sistor connected in series between the
negative battery terminal and ground
to determine charge and discharge ac-
tivity of the battery. The bq2011K is
designed for systems such as power
toolswithveryhighdischargerates.
Battery self-discharge is estimated
based on an internal timer and tem-
perature sensor. Compensations for
battery temperature and rate of
charge or discharge are applied to
the charge, discharge, and
selfdischarge calculations to provide
available charge information across
a wide range of operating conditions.
Initial battery capacity is set using
the PROG
1-4
and SPFC pins. Actual
battery capacity is automatically
“l(fā)earned” in the course of a dis-
charge cycle from full to empty and
may be displayed depending on the
display mode.
Pin Names
Nominal available charge may be di-
rectly indicated using a five-seg-
ment LED display. These segments
are used to graphically indicate
nominal available charge.
The bq2011K supports a simple
single-line bidirectional serial link to
an external processor (common
ground). The bq2011K outputs bat-
tery information in response to exter-
nal commands over the serial link. To
support subassembly testing, the
outputs may also be controlled by
command. The external processor
may also overwrite some of the
bq2011K gas gauge data registers.
The bq2011K may operate directly
from four cells. With the REF out-
put and an external transistor, a
simple, inexpensive regulator can be
built to provide V
CC
from a greater
number of cells.
Internal registers include available
charge, temperature, capacity, battery
ID,and battery status.
LCOM
LED common output
SEG
1
/PROG
1
LED segment 1/ Program
1 input
SEG
2
/PROG
2
LED segment 2 / Program
2 input
SEG
3
/PROG
3
LED segment 3/ Program
3 input
SEG
4
/PROG
4
LED segment 4/ Program
4 input
SEG
5
LED segment 5
SPFC
Programmed full count
selection input
REF
Voltage reference output
NC
No connect
DQ
Serial communications
input/output
RBI
Register backup input
SB
Battery sense input
DISP
Display control input
SR
Sense resistor input
V
CC
3.0–6.5V
V
SS
Negative battery terminal
Gas Gauge IC for
High Discharge Rates
bq2011K
10/97 B
Pin Connections
1
PN2011JK.eps
16-Pin Narrow SOIC
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCC
REF
NC
DQ
RBI
SB
DISP
SR
LCOM
SEG1/PROG1
SEG2/PROG2
SEG3/PROG3
SEG4/PROG4
SEG5
SPFC
VSS
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PDF描述 |
|---|---|
| bq2011 | Gas Gauge IC for High Discharge Rates(用于高放電率的氣體Gauge芯片) |
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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 |
| BQ2011KSN-D121 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 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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