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参数资料
| 型号： | LTC2941IDCB#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC FUEL/GAS GAUGE LI-ION 6DFN |
| 标准包装： | 500 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFDFN 裸露焊盘 |
| 供应商设备封装： | 6-DFN-EP（2x3） |
| 包装： | 带卷 (TR) |
| 配用： | DC1496A-A-ND - BOARD EVAL LTC2941 |
LTC2941
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V BAT Alert
V BAT Alert Threshold
V SENSE+ Falling, B[7:6] = 01
V SENSE+ Falling, B[7:6] = 10
V SENSE+ Falling, B[7:6] = 11
l
l
l
2.75
2.85
2.95
2.8
2.9
3
2.85
2.95
3.05
V
V
V
Digital Input s and Digital Outputs
V ITH
V OL
Logic Input Threshold, AL /CC, SCL,
SDA
Low Level Output Voltage, AL /CC, SDA I = 3mA
l
l
0.3 ?
V SENSE+
0.7 ?
V SENSE+
0.4
V
V
I IN
C IN
t PCC
Input Leakage, AL /CC, SCL, SDA
Input Capacitance, AL /CC, SCL, SDA
Minimum Charge Complete (CC) Pulse
Width
V IN = V SENSE+ /2
(Note 7)
l
l
1
10
1
μA
pF
μs
I 2 C Timing Characteristics
f SCL(MAX)
t BUF(MIN)
t SU,STA(MIN)
t HD,STA(MIN)
Maximum SCL Clock Frequency
Bus Free Time Between STOP/START
Minimum Repeated START Set-Up
Time
Minimum Hold Time (Repeated)
START Condition
l
l
l
l
400
900
1.3
600
600
kHz
μs
ns
ns
t SU,STO(MIN) Minimum Set-Up Time for STOP
Condition
l
600
ns
t SU,DAT(MIN)
Minimum Data Set-Up Time Input
l
100
ns
t HD,DATI(MIN) Minimum Data Hold Time Input
l
0
μs
t HD,DATO
Data Hold Time Output
l
0.3
0.9
μs
t Of
Data Output Fall Time
(Notes 6, 7)
l
20 + 0.1
? C B
300
ns
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive, all voltages are referenced to
GND unless otherwise specified
Note 3: I SUPPLY = I SENSE+ + I SENSE–
Note 4: The equivalent charge of an LSB in the accumulated charge
registers (C, D) depends on the value of R SENSE and the setting of the
internal prescaling factor M. It is calculated by:
See Choosing R SENSE and Coulomb Counter Prescaler M section for more
information.
1mAh = 3.6A ? s = 3.6C (coulomb), 0.085mAh = 306mC.
Note 5: Deviation of q LSB from its nominal value.
Note 6: C B = capacitance of one bus line in pF (10pF ≤ C B ≤ 400pF).
Note 7: Guaranteed by design, not subject to test.
50m ? M
q LSB = 0.085mAh ?
?
R SENSE 128
2941fa
3
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