Rainbow-electronics MAX17047 Uživatelský manuál stáhnout pdf (Strana 1)

MAX17047

ModelGauge m3 Fuel Gauge

�� Maxim Integrated Products 1

Simplified Operating Circuit

19-6008; Rev 0; 9/11

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part,

refer to: www.maxim-ic.com/MAX17047.related

ModelGauge is a trademark of Maxim Integrated Products, Inc.

General Description

The MAX17047 incorporates the Maxim ModelGauge™

m3 algorithm that combines the excellent short-term

accuracy and linearity of a coulomb counter with the

excellent long-term stability of a voltage-based fuel gauge,

along with temperature compensation to provide industry-

leading fuel-gauge accuracy. ModelGauge m3 cancels

offset accumulation error in the coulomb counter, while

providing better short-term accuracy than any purely

voltage-based fuel gauge. Additionally, the ModelGauge

m3 algorithm does not suffer from abrupt corrections that

normally occur in coulomb-counter algorithms, since tiny

continual corrections are distributed over time.

The device automatically compensates for aging, tem-

perature, and discharge rate and provides accurate

state of charge (SOC) in mAh or % over a wide range of

operating conditions. The device provides two methods

for reporting the age of the battery: reduction in capacity

and cycle odometer.

The device provides precision measurements of current,

voltage, and temperature. Temperature of the battery

pack is measured using an external thermistor supported

by ratiometric measurements on an auxiliary input. A

2-wire (I

C) interface provides access to data and control

registers. The IC is available in a lead(Pb)-free, 3mm x

3mm, 10-pin TDFN package.

Applications

Features

S Accurate Battery-Capacity Estimation

 Temperature, Age, and Rate Compensated

 Does Not Require Empty, Full, or Idle States to

Maintain Accuracy

S Precision Measurement System

 No Calibration Required

S ModelGauge m3 Algorithm

 Long-Term Influence by Voltage Fuel Gauge

Cancels Coulomb-Counter Drift

 Short-Term Influence by Coulomb Counter

Provides Excellent Linearity

 Adapts to Cell Characteristics

S External Temperature-Measurement Network

Actively Switched Thermistor Resistive Divider

 Reduces Current Consumption

S Low Quiescent Current

 25µA Active, < 0.5µA Shutdown

S Alert Indicator for SOC, Voltage, Temperature, and

Battery Removal/Insertion Events

S AtRate Estimation of Remaining Capacity

S 2-Wire (I

C) Interface

S Tiny, Lead(Pb)-Free, 3mm x 3mm, 10-Pin TDFN

Package

2.5G/3G/4G Wireless

Handsets

Smartphones/PDAs

Tablets and Handheld

Computers

Portable Game Players

e-Readers

Digital Still and Video

Cameras

Portable Medical Equipment

0.1µF0.1µF

OPTIONAL

10nF

OPTIONAL

10kI

PK-

PK+

OPTIONAL

10kI

NTC

THERMISTOR

10mI

RSNS

CSP

REG

AIN SCL

THRM

BATT

CSNEP

SDA

ALRT

MAX17047

PROTECTION

SYSTEM

BATTERY PACK

HOST

µP

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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MAX17047 1
ModelGauge m3 Fuel Gauge 1

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Strany 1 - ModelGauge m3 Fuel Gauge

MAX17047ModelGauge m3 Fuel Gauge �� Maxim Integrated Products 1Simplified Operating

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�� Maxim Integrated Products 10MAX17047ModelGauge m3 Fuel GaugeFigure 4. ModelGauge

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�� Maxim Integrated Products 11MAX17047ModelGauge m3 Fuel Gauge• Cell Capacity (

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�� Maxim Integrated Products 12MAX17047ModelGauge m3 Fuel GaugeFigure 6. Operating

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�� Maxim Integrated Products 13MAX17047ModelGauge m3 Fuel GaugeFigure 7. Proper Boa

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�� Maxim Integrated Products 14MAX17047ModelGauge m3 Fuel GaugeFigure 8. ModelGauge

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�� Maxim Integrated Products 15MAX17047ModelGauge m3 Fuel GaugeModelGauge Algorithm

Strany 8

�� Maxim Integrated Products 16MAX17047ModelGauge m3 Fuel GaugeRemCapREP Register (

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�� Maxim Integrated Products 17MAX17047ModelGauge m3 Fuel GaugeFigure 15. SOCVF Reg

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�� Maxim Integrated Products 18MAX17047ModelGauge m3 Fuel GaugeCycles Register (17h

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�� Maxim Integrated Products 19MAX17047ModelGauge m3 Fuel GaugeFigure 21. FullCapNo

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�� Maxim Integrated Products 2MAX17047ModelGauge m3 Fuel GaugeVBATT, SDA, SCL, ALR

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�� Maxim Integrated Products 20MAX17047ModelGauge m3 Fuel GaugeFullSOCThr Register

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�� Maxim Integrated Products 21MAX17047ModelGauge m3 Fuel GaugeWhen a proper end

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�� Maxim Integrated Products 22MAX17047ModelGauge m3 Fuel GaugeICHGTerm Register (1

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�� Maxim Integrated Products 23MAX17047ModelGauge m3 Fuel GaugeCell Characterizatio

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�� Maxim Integrated Products 24MAX17047ModelGauge m3 Fuel GaugeRelaxCFG Register (2

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�� Maxim Integrated Products 25MAX17047ModelGauge m3 Fuel GaugeFigure 33. MiscCFG R

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�� Maxim Integrated Products 26MAX17047ModelGauge m3 Fuel GaugeMR4:MR0—Mixing Rate.

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�� Maxim Integrated Products 27MAX17047ModelGauge m3 Fuel GaugePower-Up and Power-O

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�� Maxim Integrated Products 28MAX17047ModelGauge m3 Fuel GaugeNote that some re

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�� Maxim Integrated Products 29MAX17047ModelGauge m3 Fuel GaugeFigure 37. Operation

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�� Maxim Integrated Products 3MAX17047ModelGauge m3 Fuel GaugeNote 1: Specificat

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�� Maxim Integrated Products 30MAX17047ModelGauge m3 Fuel GaugeModes of OperationTh

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�� Maxim Integrated Products 31MAX17047ModelGauge m3 Fuel GaugeALRT FunctionThe Al

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�� Maxim Integrated Products 32MAX17047ModelGauge m3 Fuel GaugeSALRT Threshold Regi

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�� Maxim Integrated Products 33MAX17047ModelGauge m3 Fuel GaugeNote that if this bi

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�� Maxim Integrated Products 34MAX17047ModelGauge m3 Fuel GaugeTHR2:THR0—Sets the

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�� Maxim Integrated Products 35MAX17047ModelGauge m3 Fuel GaugeVersion Register (21

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�� Maxim Integrated Products 36MAX17047ModelGauge m3 Fuel Gaugevalues. If VCELL is

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�� Maxim Integrated Products 37MAX17047ModelGauge m3 Fuel GaugeAverageCurrent Regis

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�� Maxim Integrated Products 38MAX17047ModelGauge m3 Fuel GaugeFor easiest softwa

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�� Maxim Integrated Products 39MAX17047ModelGauge m3 Fuel GaugeFigure 56. AIN Regis

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�� Maxim Integrated Products 4MAX17047ModelGauge m3 Fuel GaugeTypical Operating Ch

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�� Maxim Integrated Products 40MAX17047ModelGauge m3 Fuel Gaugethe maximum or less

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�� Maxim Integrated Products 41MAX17047ModelGauge m3 Fuel GaugeFigure 61. TOFF Regi

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�� Maxim Integrated Products 42MAX17047ModelGauge m3 Fuel GaugeTable 5. Device Memo

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�� Maxim Integrated Products 43MAX17047ModelGauge m3 Fuel Gauge2-Wire Bus SystemThe

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�� Maxim Integrated Products 44MAX17047ModelGauge m3 Fuel Gaugemonitoring the ack

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�� Maxim Integrated Products 45MAX17047ModelGauge m3 Fuel GaugePackage InformationF

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MAX17047ModelGauge m3 Fuel GaugeMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim prod

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�� Maxim Integrated Products 5MAX17047ModelGauge m3 Fuel GaugeTypical Operating Ch

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�� Maxim Integrated Products 6MAX17047ModelGauge m3 Fuel GaugeTypical Operating Ch

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�� Maxim Integrated Products 7MAX17047ModelGauge m3 Fuel GaugePin DescriptionPin C

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�� Maxim Integrated Products 8MAX17047ModelGauge m3 Fuel GaugeBlock DiagramDetaile

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�� Maxim Integrated Products 9MAX17047ModelGauge m3 Fuel Gaugethe system is bou

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