Texas Instruments bq27500 Manual do Utilizador descarregar pdf

www.ti.com

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

Resumo do Conteúdo

Página 1 - 1 INTRODUCTION

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

Página 2 - Contents

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

Página 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

Página 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

Página 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

Página 6

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

Página 7 - Figure 3-1. I

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

Página 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

Página 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

Página 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

Página 11

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

Página 12

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

Página 13

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

Página 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

Página 15

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

Página 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

Página 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

Página 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

Página 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

Página 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

Página 21

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

Página 22

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

Página 23 - 5.3.3 BAT_LOW Pin

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

Página 24

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

Página 25

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

Página 26

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

Página 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

Página 28 - 5.7.4 HIBERNATE MODE

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

Página 29 - 5.8.1 RESET FUNCTIONS

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

Página 30 - 5.9 AUTOCALIBRATION

Página 31

Página 32

Página 33 - 7 COMMUNICATIONS

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

Página 34 - 8 REFERENCE SCHEMATICS

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

Página 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

Página 36

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

Página 37

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

Página 38

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

Página 39 - IMPORTANT NOTICE

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

Comentários a estes Manuais

Sem comentários

Texas Instruments bq27500 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Medição, teste e controlo Texas Instruments bq27500. Texas Instruments bq27500 User's Manual Manual do Utilizador

Resumo do Conteúdo

Comentários a estes Manuais

Manuais e produtos relacionados com Medição, teste e controlo Texas Instruments bq27500