Datasheet > LTC2941-1

LTC2941-1

更新时间： 2024-11-10 01:19:35

品牌	Logo	应用领域
凌特 - Linear		电池仪表
页数	文件大小	规格书
16页	216K
描述
1A I2C Battery Gas Gauge with Internal Sense Resistor

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中文翻译

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LTC2941-1 数据手册

LTC2941-1

1A I C Battery Gas Gauge

with Internal Sense Resistor

FeaTures

DescripTion

TheLTC^®2941-1measuresbatterychargestateinbattery-

powered 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 an internal sense resistor between the battery’s

positive terminal and the load or charger. The measured

Indicates Accumulated Battery Charge and

Discharge

SMBus/I C Interface

Integrated 50mΩ High Side Sense Resistor

±±A Sense Current Range

High Accuracy Analog Integration

±% Charge Accuracy

charge is stored in internal registers. An SMBus/I C in-

terface accesses and conﬁgures the device.

Conﬁgurable Alert Output/Charge Complete Input

2.7V to 5.5V Operating Range

The LTC2941-1 features programmable high and low

thresholds for accumulated charge. If a threshold is ex-

ceeded, the device communicates an alert using either the

SMBus alert protocol or by setting a ﬂag in the internal

status register.

Quiescent Current Less than 100µA

Small 6-Pin 2mm × 3mm DFN package

applicaTions

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot

Swap, ThinSOT and Bat-Track are trademarks of Linear Technology Corporation. All other

trademarks are the property of their respective owners.

Low Power Handheld Products

Cellular Phones

MP3 Player

Cameras

GPS

Typical applicaTion

Total Charge Error vs Sense Current

1.00

LOAD

+ = 3.6V

SENSE

CHARGER

0.75

0.50

0.25

SENSE

LTC2941-1

0.1µF

AL/CC

SDA

I C/SMBus

TO HOST

–

SENSE

1-CELL

Li-Ion

SCL

29411 TA01a

–0.25

–0.50

–0.75

–1.00

GND

100

| (mA)

1000

SENSE

29411 TA01b

29411f

ꢀ

12 3 4 5 6 7...16

中文翻译

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