Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - battery management Charge indicator Li-Ion SON 12 (2.5x4) Surface-mount

FEATURESAPPLICATIONS

DESCRIPTION

TYPICALAPPLICATION

HostSystem

PACK-

Single-CellLi-ion

BatteryPack

CHG

DSG

Temp

Sense

Battery

Good

Current

Sense

PACK+

Voltage

Sense

Battery

Low

Warning

FETs

I C

LDO

REG25

REGIN

VCC

DATA

bq27510

Power

Management

Controller

PROTECTION

bq27510-G1

www.ti.com

.....................................................................................................................................................................................................SLUS927–APRIL2009

System-SideImpedanceTrack™FuelGaugeWithDirectBatteryConnection

•Smartphones

•BatteryFuelGaugefor1-SeriesLi-Ion

Applications

•PDAs

•DigitalStillandVideoCameras

•ResidesonSystemMainBoard

•HandheldTerminals

–WorkswithEmbeddedorRemovable

•MP3orMultimediaPlayers

BatteryPacks

–UsesPACK+,PACK–,andTBattery

Terminals

–CanbePoweredDirectlyFromBatteryPackTheTexasInstrumentsbq27510system-sideLi-Ion

batteryfuelgaugeisamicrocontrollerperipheralthat

(noLDOrequired)

providesfuelgaugingforsingle-cellLi-Ionbattery

•MicrocontrollerPeripheralProvides:

packs.Thedevicerequireslittlesystem

–AccurateBatteryFuelGauging

microcontrollerfirmwaredevelopment.Thebq27510

residesonthesystem’smainboardandmanagesan

–BatteryLowInterruptWarning

embeddedbattery(non-removable)oraremovable

–BatteryInsertionIndicator

batterypack.

–96BytesofNon-VolatileScratchPad

Thebq27510usesthepatentedImpedanceTrack™

FLASH

algorithmforfuelgauging,andprovidesinformation

•BatteryFuelGaugingBasedonPatented

suchasremainingbatterycapacity(mAh),

ImpedanceTrack™Technology

state-of-charge(%),run-timetoempty(min.),battery

–ModelsBatteryDischargeCurvefor

voltage(mV),andtemperature(°C).

AccurateTime-To-EmptyPredictions

Batteryfuelgaugingwiththebq27510requiresonly

–AutomaticallyAdjustsforBatteryAging,

PACK+(P+),PACK–(P–),andThermistor(T)

BatterySelf-Discharge,and

connectionstoaremovablebatterypackor

Temperature/RateInefficiencies

embeddedbattery.

–Low-ValueSenseResistor(10mΩorless)

•I

C™forConnectiontoSystem

MicrocontrollerPort

•Small12-pin2,5mm×4mmSONPackage

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2ImpedanceTrackisatrademarkofTexasInstruments.

3I2CisatrademarkofPhillipsCorporation.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Not Recommended For New Designs

Summary of content (39 pages)

PAGE 1
Not Recommended For New Designs bq27510-G1 www.ti.com .....................................................................................................................................................................................................
PAGE 2
Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
PAGE 3
Not Recommended For New Designs bq27510-G1 www.ti.com .....................................................................................................................................................................................................
PAGE 4
Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com 2.5 V LDO REGULATOR (1) TA = –40°C to 85°C, CREG = 0.47 µF, 2.45 V < VREGIN = VBAT < 5.5 V; typical values at TA = 25°C and VREGIN = VBAT = 3.6 V (unless otherwise noted) PARAMETER MIN NOM MAX UNIT 2.7 V ≤ VREGIN ≤ 5.
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Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 LOW FREQUENCY OSCILLATOR TA = –40°C to 85°C, CREG = 0.47 µF, 2.45 V < VREGIN = VBAT < 5.5 V; typical values at TA = 25°C and VREGIN = VBAT = 3.
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Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com I2C-COMPATIBLE INTERFACE COMMUNICATION TIMING CHARACTERISTICS TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; typical values at TA = 25°C and VCC = 2.
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Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 GENERAL DESCRIPTION The bq27510 accurately predicts the battery capacity and other operational characteristics of a single Li-based rechargeable cell.
PAGE 8
Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com DATA COMMANDS Standard Data Commands The bq27510 uses a series of 2-byte standard commands to enable system reading and writing of battery information. Each standard command has an associated command-code pair, as indicated in Table 1.
PAGE 9
Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 Table 2.
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bq27510-G1 Not Recommended For New Designs SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com RESET_DATA: 0x0005 Instructs the fuel gauge to return the reset data to addresses 0x00/0x01, with the low byte (0x00) being the number of full resets and the high byte (0x01) the number of partial resets.
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Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 CAL_MODE: 0x0040 This command instructs the fuel gauge to enter calibration mode. This command is only available when the fuel gauge is UNSEALED. RESET : 0x0041 This command instructs the fuel gauge to perform a full reset.
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bq27510-G1 Not Recommended For New Designs SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com DSG = Discharging detected. True when set. NominalAvailableCapacity( ): 0x0c/0x0d This read-only command pair returns the uncompensated (less than C/20 load) battery capacity remaining. Units are mAh.
PAGE 13
Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 MaxLoadTimeToEmpty( ): 0x20/0x21 This read-only function returns an unsigned integer value of the predicted remaining battery life at the maximum load current discharge rate, in minutes.
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Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com Extended Data Commands Extended commands offer additional functionality beyond the standard set of commands. They are used in the same manner; however unlike standard commands, extended commands are not limited to 2-byte words.
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Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 BlockDataChecksum( ): 0x60 UNSEALED Access: This byte contains the checksum on the 32 bytes of block data read or written to data flash.
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bq27510-G1 Not Recommended For New Designs SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com Occasionally, a data flash CLASS will be larger than the 32-byte block size. In this case, the DataFlashBlock( ) command is used to designate which 32-byte block the desired locations reside in.
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Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 Although FULL ACCESS and UNSEALED modes appear identical, only FULL ACCESS mode allows the bq27510 to write access-mode transition keys.
PAGE 18
Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com DATA FLASH SUMMARY Table 7 summarizes the data flash locations available to the user, including their default, minimum, and maximum values. Table 7.
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Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 Table 7.
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Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com FUNCTIONAL DESCRIPTION FUEL GAUGING The bq27510 measures the cell voltage, temperature, and current to determine battery SOC.
PAGE 21
Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 Table 8. Constant-Current Model Used When Load Mode = 0 (continued) LoadSelect Value Current Model Used 4 Design capacity / 5: C Rate based off of Design Capacity /5 or a C / 5 rate in mA.
PAGE 22
Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com Quit Relax Time specifies the minimum time required for AverageCurrent( ) to remain above the QuitCurrent threshold before exiting relaxation mode.
PAGE 23
Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 RESCAP = No-load rate of compensation is applied to the reserve capacity calculation. True when set. Default is 0. BAT_GD override bit. If the gauge enters HIBERNATE only due to the cell voltage, the BAT_GD will not BATG_OVR = negate.
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bq27510-G1 Not Recommended For New Designs SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com Battery Detection using the BI/TOUT Pin During power-up or hibernate activities, or any other activity where the bq27510 needs to determine whether a battery is connected or not, the fuel gauge applies a test for battery presence.
PAGE 25
Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 When PFC = 1, the bq27505 can indicate when battery temperature has fallen below or risen above predefined thresholds Suspend Low Temp or Suspend High Temp, respectively. In this mode, the [XCHG] bit is set to indicate this condition.
PAGE 26
Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.
PAGE 27
Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 The bq27510 exits SLEEP if any entry condition is broken, specifically when (1) AverageCurrent( ) rises above Sleep Current, or (2) a current in excess of IWAKE through RSENSE is detected.
PAGE 28
bq27510-G1 Not Recommended For New Designs SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com DEVICE RESET Generate Active RAM checksum value NO Stored checksum Do the Checksum Values Match? Re-initialize all RAM YES NORMAL OPERATION NO Active RAM changed ? YES Store checksum Generate new checksum value Figure 3.
PAGE 29
Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 Table 11. IWAKE Threshold Settings (1) (1) RSNS1 RSNS0 IWAKE Vth(SRP-SRN) 0 0 0 Disabled 0 0 1 Disabled 0 1 0 +1. 0 mV or –1.0 mV 0 1 1 +2.2 mV or –2.2 mV 1 0 0 +2.2 mV or –2.2 mV 1 0 1 +4.6 mV or–4.
PAGE 30
Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com Activities Upon Pack Insertion First OCV and Impedance Measurement At power-up the BAT_LOW/BAT_GD pin is inactive, so that the system cannot obtain power from the battery (this depends on actual implementation).
PAGE 31
Not Recommended For New Designs bq27510-G1 www.ti.com ..................................................................................................................................................................................................... SLUS927 – APRIL 2009 COMMUNICATIONS I2C INTERFACE The bq27510 supports the standard I2C read, incremental read, quick read, one byte write, and incremental write functions.
PAGE 32
Not Recommended For New Designs bq27510-G1 SLUS927 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.
PAGE 33
PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant BQ27510DRZR-G1 SON DRZ 12 3000 330.0 12.4 2.8 4.3 1.2 4.0 12.0 Q2 BQ27510DRZT-G1 SON DRZ 12 250 180.0 12.4 2.8 4.3 1.2 4.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ27510DRZR-G1 SON DRZ 12 3000 338.1 338.1 20.6 BQ27510DRZT-G1 SON DRZ 12 250 210.0 185.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.