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参数资料
| 型号： | LTC2942IDCB#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | 2 X 3 MM, LEAD FREE, PLASTIC, MO-229, DFN-6 |
| 文件页数： | 1/18页 |
| 文件大小： | 227K |
| 代理商： | LTC2942IDCB#TRPBF |
LTC2942
1
2942fa
Typical applicaTion
DescripTion
Battery Gas Gauge
with Temperature,
Voltage Measurement
The LTC2942 measures battery charge state, battery
voltage and chip temperature in handheld PC and portable
productapplications.Itsoperatingrangeisperfectlysuited
forsingle-cellLi-Ionbatteries.Aprecisioncoulombcounter
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/I2C
interface.
TheLTC2942featuresprogrammablehighandlowthresh-
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.
FeaTures
applicaTions
n
Indicates Accumulated Battery Charge and
Discharge
n
High Accuracy Analog Integration
n
ADC Measures Battery Voltage and Temperature
n
Integrated Temperature Sensor
n
High Side Sense
n
1% Voltage and Charge Accuracy
n
±50mV Sense Voltage Range
n
SMBus/I2C Interface
n
Configurable Alert Output/Charge Complete Input
n
2.7V to 5.5V Operating Range
n
Quiescent Current Less than 100A
n
Small 6-Pin 2mm × 3mm DFN package
n
Low Power Handheld Products
n
Cellular Phones
n
MP3 Players
n
Cameras
n
GPS
Total Charge Error vs
Differential Sense Voltage
+
SENSE+
I2C/SMBus
TO HOST
SENSE–
CHARGER
LTC2942
AL/CC
SDA
LOAD
0.1F
2942 TA01a
1-CELL
Li-Ion
RSENSE
100m
SCL
GND
VSENSE (mV)
0.1
–1.0
CHARGE
ERROR
(%)
0
–0.5
–1.5
0.5
1.0
1
10
100
2942 TA01b
–2.0
VSENSE+ = 3.6V
2.0
1.5
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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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