Texas Instruments bq27500 Manual de usuario descargar pdf (Pagina 1)

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1 INTRODUCTION

1.1 FEATURES 1.2 APPLICATIONS

1.3 DESCRIPTION

HostSystem

SingleCellLi-Ion

BatteryPack

PACK-

PROTECTION

CHG

DSG

Temp

Sense

Battery

Good

Current

Sense

I2C

LDO

PACK+

Voltage

Sense

Battery

Low

Warning

FETs

bq27500/1

RID

Sense*

*bq27501Only

Power

Management

Controller

bq27500

bq27501

System-Side Impedance Track™ Fuel Gauge

SLUS785 – SEPTEMBER 2007

• Battery Fuel Gauge for 1-Series Li-Ion

• Smartphones

Applications

• PDAs

• Resides on System Main Board

• Digital Still and Video Cameras

– Works with Embedded or Removable

• Handheld Terminals

Battery Packs

• MP3 or Multimedia Players

• Two Varieties

– bq27500: Uses PACK+, PACK-, and T

Battery Terminals

– bq27501: Includes Battery Pack ID Resistor

(RID) Terminal

The Texas Instruments bq27500/01 System-Side

Li-Ion Battery Fuel Gauge is a micro-controller

• Micro-Controller Peripheral Provides:

peripheral that provides fuel gauging for single cell

– Accurate Battery Fuel Gauging

Li-Ion battery packs. The device requires little system

– Internal Temperature Sensor for System

micro-controller firmware development. The

Temperature Reporting

bq27500/01 resides on the system’s main board, and

– Battery Low Interrupt Warning

manages an embedded battery (non-removable) or a

– Battery Insertion Indicator

removable battery pack.

– Battery ID Detection

– 96 bytes of Non-Volatile Scratch Pad

The bq27500/01 uses the patented Impedance

FLASH

Track™ algorithm for fuel gauging, and provides

information such as remaining battery capacity

• Battery Fuel Gauge Based on Patented

(mAh), state-of-charge (%), run-time to empty (min.),

Impedance Track™ Technology

battery voltage (mV), and temperature ( ° C).

– Models the Battery Discharge Curve for

Accurate Time-to-Empty Predictions

Battery fuel gauging with the bq27500 requires only

– Automatically Adjusts for Battery Aging,

PACK+ (P+), PACK- (P-), and Thermistor (T)

Battery Self Discharge, and

connections to a removable battery pack or

Temperature/Rate Inefficiencies

embedded battery circuit. The bq27501 works with

– Low Value Sense Resistor (10m Ω or Less)

identification resistors in battery packs, to gauge

• I

C™ Interface for Connection to System

batteries of different fundamental chemistries and/or

Micro-Controller Port

significantly different rated capacities.

• 12-Pin 2,5 mm × 4,0 mm SON Package

TYPICAL APPLICATION

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this document.

Impedance Track is a trademark of Texas Instruments.

C is a trademark of Philips Electronics.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

1 2 3 4 5 6 ... 38 39

Indice de contenidos

Pagina 1 - 1 INTRODUCTION

www.ti.com1 INTRODUCTION1.1 FEATURES 1.2 APPLICATIONS1.3 DESCRIPTIONHostSystemSingleCellLi-IonBatteryPackPACK-PROTECTIONICCHGDSGTempSenseBatteryGo

Pagina 2 - Contents

www.ti.combq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 20074.1.1.1 Control( ): 0x00/0x01Issuing a Control( ) command requi

Pagina 3 - 2 DEVICE INFORMATION

www.ti.combq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 20074.1.1.1.3 FW_VERSION: 0x0002Instructs the fuel gauge to return

Pagina 4 - 3 ELECTRICAL SPECIFICATIONS

www.ti.combq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 20074.1.1.1.15 CAL MODE: 0x0040This command instructs the fuel gaug

Pagina 5 - 3.6 LOW FREQUENCY OSCILLATOR

www.ti.combq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 20074.1.1.7 NominalAvailableCapacity( ): 0x0c/0x0dThis read-only co

Pagina 6

www.ti.com4.1.2 EXTENDED DATA COMMANDSbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 20074.1.1.16 MaxLoadCurrent( ): 0x1e/0x

Pagina 7 - Figure 3-1. I

www.ti.combq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007Table 4-5. Extended Data Commands (continued)COMMAND SEALED UNS

Pagina 8 - 4 GENERAL DESCRIPTION

www.ti.com4.2 DATA FLASH INTERFACE4.2.1 ACCESSING THE DATA FLASHbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 20074.1.2.7 D

Pagina 9 - 4.1.1 STANDARD DATA COMMANDS

www.ti.com4.3 MANUFACTURER INFORMATION BLOCKS4.4 ACCESS MODES4.5 SEALING/UNSEALING DATA FLASHbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS

Pagina 10 - SLUS785 – SEPTEMBER 2007

www.ti.com4.6 DATA FLASH SUMMARYbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007Both the sets of keys for each level are

Pagina 11

www.ti.combq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007Table 4-7. Data Flash Summary (continued)Subclass Data Min Max

Pagina 12

www.ti.comContentsbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007These devices have limited built-in ESD protection. The

Pagina 13

www.ti.com5 FUNCTIONAL DESCRIPTION5.1 FUEL GAUGINGbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007Table 4-7. Data Flash S

Pagina 14 - 4.1.2 EXTENDED DATA COMMANDS

www.ti.com5.2 IMPEDANCE TRACK™ VARIABLESbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007The bq27500/1 has several data fl

Pagina 15

www.ti.combq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007Dsg Current ThresholdThis register is used as a threshold by ma

Pagina 16 - 4.2 DATA FLASH INTERFACE

www.ti.com5.3 DETAILED DESCRIPTION OF DEDICATED PINS5.3.1 The Operation Configuration Register5.3.2 Pin Function Code Descriptions5.3.3 BAT_LOW Pin5.3

Pagina 17 - 4.4 ACCESS MODES

www.ti.com5.3.5 Battery Detection Using the BI/TOUT Pinbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007for the fuel gauge

Pagina 18 - 4.6 DATA FLASH SUMMARY

www.ti.comStartInit(“BAT_GD”disabled, OCVtaken, “BAT_GDenabled.)EndNoBattPresent-OR- badbatt(“BAT_GD”disabled)BattPresentSLEEPNORMALYesBatteryVol

Pagina 19 - (1) bq27501 only

www.ti.com5.4 TEMPERATURE MEASUREMENT5.5 OVERTEMPERATURE INDICATION5.5.1 Overtemperature: Charge5.5.2 Overtemperature: Discharge5.6 CHARGING AND CHARG

Pagina 20 - 5 FUNCTIONAL DESCRIPTION

www.ti.com5.7 POWER MODES5.7.1 NORMAL MODE5.7.2 SLEEP MODE5.7.3 BAT INSERT CHECK MODEbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SE

Pagina 21

www.ti.comExitFromSLEEP| AverageCurrent () | >SleepCurrentORCurrentisDetectedaboveIWAKEEntryToHIBERNATEHosthasset ControlStatus[HIBERN

Pagina 22

www.ti.com5.8 POWER CONTROL5.8.1 RESET FUNCTIONSStorechecksumActiveRAMchanged?GenerateNewchecksumvalueYESNOGenerate ActiveRAMchecksumvalueDothe

Pagina 23 - 5.3.3 BAT_LOW Pin

www.ti.com2 DEVICE INFORMATION2.1 AVAILABLE OPTIONS2.2 PIN DIAGRAMSBATVSSSRNSRPVCCBAT_GDSDASCL123456121110987BAT_LOW_TS123456121110987BI/TOUTBATVSSVCC

Pagina 24

www.ti.com5.8.2 WAKE-UP COMPARATOR5.8.3 FLASH UPDATES5.9 AUTOCALIBRATIONbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007T

Pagina 25

www.ti.com6 APPLICATION-SPECIFIC INFORMATION6.1 BATTERY PROFILE STORAGE AND SELECTION6.1.1 General Profile Description6.1.2 Activities Upon Pack Inser

Pagina 26

www.ti.com6.2.2 Battery With Resistor ID (bq27501 Only)bq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007impedance is measu

Pagina 27 - 5.7.3 BAT INSERT CHECK MODE

www.ti.com7 COMMUNICATIONS7.1 I2C INTERFACE(a)1-bytewrite (b)quickread(c)1-byteread(d)incrementalread(S=Start,Sr=RepeatedStart, A = Ackn

Pagina 28 - 5.7.4 HIBERNATE MODE

www.ti.com8 REFERENCE SCHEMATICS8.1 SCHEMATICbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007REFERENCE SCHEMATICS34 Submi

Pagina 29 - 5.8.1 RESET FUNCTIONS

PACKAGING INFORMATIONOrderable Device Status(1)PackageTypePackageDrawingPins PackageQtyEco Plan(2)Lead/Ball Finish MSL Peak Temp(3)BQ27500DRZR ACTIVE

Pagina 30 - 5.9 AUTOCALIBRATION

Pagina 31

Pagina 32

Pagina 33 - 7 COMMUNICATIONS

IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,improvemen

Pagina 34 - 8 REFERENCE SCHEMATICS

www.ti.com3 ELECTRICAL SPECIFICATIONS3.1 ABSOLUTE MAXIMUM RATINGS3.2 RECOMMENDED OPERATING CONDITIONS3.3 POWER-ON RESETbq27500bq27501System-Side Imped

Pagina 35 - PACKAGE OPTION ADDENDUM

www.ti.com3.4 INTERNAL TEMPERATURE SENSOR CHARACTERISTICS3.5 HIGH FREQUENCY OSCILLATOR3.6 LOW FREQUENCY OSCILLATOR3.7 INTEGRATING ADC (COULOMB COUNTER

Pagina 36

www.ti.com3.9 DATA FLASH MEMORY CHARACTERISTICS3.10 I2C-COMPATIBLE INTERFACE COMMUNICATION TIMING CHARACTERISTICSbq27500bq27501System-Side Impedance T

Pagina 37

www.ti.combq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007Figure 3-1. I2C-Compatible Interface Timing DiagramsSubmit Docu

Pagina 38

www.ti.com4 GENERAL DESCRIPTIONbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007The bq27500/1 accurately predicts the batt

Pagina 39 - IMPORTANT NOTICE

www.ti.com4.1 DATA COMMANDS4.1.1 STANDARD DATA COMMANDSbq27500bq27501System-Side Impedance Track™ Fuel GaugeSLUS785 – SEPTEMBER 2007The bq27500/1 uses

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Texas Instruments bq27500 Manual de usuario Pagina 1

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Texas Instruments bq27500 Manual de usuario Pagina 1

Busca en linea o descarga Manual de usuario para De medición, control y control Texas Instruments bq27500. Texas Instruments bq27500 User's Manual Manual de usuario

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