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参数资料
| 型号： | LTC2942IDCB#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | IC FUEL/GAS GAUGE LI-ION 6DFN |
| 标准包装： | 2,500 |
| 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： | DC1496B-B-ND - BOARD EVAL LTC2942 |
LTC2942
Battery Gas Gauge
with Temperature,
Voltage Measurement
Indicates Accumulated Battery Charge and
High Accuracy Analog Integration
ADC Measures Battery Voltage and Temperature
Integrated Temperature Sensor
High Side Sense
1% Voltage and Charge Accuracy
±50mV Sense Voltage Range
SMBus/I 2 C Interface
Configurable Alert Output/Charge Complete Input
2.7V to 5.5V Operating Range
Quiescent Current Less than 100μA
Small 6-Pin 2mm × 3mm DFN package
Low Power Handheld Products
Cellular Phones
MP3 Players
Cameras
GPS
FEATURES
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Discharge
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APPLICATIONS
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DESCRIPTION
The LTC ? 2942 measures battery charge state, battery
voltage and chip temperature in handheld PC and portable
product applications. Its operating range is perfectly suited
for single-cell Li-Ion batteries. A precision coulomb counter
integrates current through a sense resistor between the
battery’s positive terminal and the load or charger. Battery
voltage and on-chip temperature are measured with an
internal 14-bit No Latency ?∑? ADC. The three measured
quantities (charge, voltage and temperature) are stored in
internal registers accessible via the onboard SMBus/I 2 C
interface.
The LTC2942 features programmable high and low thresh-
olds for all three measured quantities. If a programmed
threshold is exceeded, the device communicates an alert
using either the SMBus alert protocol or by setting a flag
in the internal status register.
The LTC2942 requires only a single low value sense resis-
tor to set the measured current range.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
No Latency ?Σ , ThinSOT and Bat-Track are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Total Charge Error vs
Differential Sense Voltage
2.0
V SENSE+ = 3.6V
CHARGER
SENSE +
LOAD
0.1μF
1.5
1.0
I 2 C/SMBus
TO HOST
LTC2942
AL /CC
SDA SENSE –
SCL
GND
+
R SENSE
100m
1-CELL
Li-Ion
2942 TA01a
0.5
0
–0.5
–1.0
–1.5
–2.0
0.1
1
10
100
V SENSE (mV)
2942 TA01b
2942fa
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2943CDD#PBF | 制造商:Linear Technology 功能描述:IC GAS GAUGE MULTICELL 8DFN 制造商:Linear Technology 功能描述:BATTERY GAS GAUGE, 20V, DFN-8, Battery Management Function:Fuel Gauge, Battery Type:-, Supply Voltage Min:3.6V, Supply Voltage Max:20V, Battery IC Case Style:DFN, No. of Pins:8, IC Interface Type:I2C, SMBus, Package / Case:8-DFN , RoHS Compliant: Yes |
| LTC2943CDD#TRPBF | 制造商:Linear Technology 功能描述:BATTERY GAS GAUGE, 20V, DFN-8, Battery Management Function:Fuel Gauge, Supply Voltage Min:3.6V, Supply Voltage Max:20V, Battery IC Case Style:DFN, No. of Pins:8, IC Interface Type:I2C, SMBus, Operating Temperature Min:0C , RoHS Compliant: Yes |
| LTC2945CMS#PBF | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:IC POWER MONITOR I2C 12-MSOP 制造商:Linear Technology 功能描述:MS-System Monitor/Other, Wide Range I2C Power Monitor (SDAO) |
| LTC2945CMS#TRPBF | 制造商:Linear Technology 功能描述:IC POWER MONITOR I2C 12-MSOP 制造商:Linear Technology 功能描述:MS-System Monitor/Other, Wide Range I2C Power Monitor (SDAO) |
| LTC2945CMS-1#PBF | 制造商:Linear Technology 功能描述:I2C Power Monitor 12-Pin MSOP 制造商:Linear Technology 功能描述:IC POWER MONITOR I2C 12-MSOP |
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