BQ27500-V130

Manufacturer Part NumberBQ27500-V130
DescriptionThe Texas Instruments bq27500 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs
ManufacturerTexas Instruments
BQ27500-V130 datasheet
 


Specifications of BQ27500-V130

Communication InterfaceI2C# Series Cells1
Pin/package12DSBGA, 12SONOperating Temperature Range(c)-40 to 85
ImplementationSystem  
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System-Side Impedance Track Fuel Gauge
1 INTRODUCTION
1.1
FEATURES
• Battery Fuel Gauge for 1-Series Li-Ion
1234
Applications
• Resides on System Main Board
– Works With Embedded or Removable
Battery Packs
• Uses PACK+, PACK–, and T Battery Terminals
• Microcontroller Peripheral Provides:
– Accurate Battery Fuel Gauging
– Internal Temperature Sensor for System
Temperature Reporting
– Battery Low Interrupt Warning
– Battery Insertion Indicator
– 96 Bytes of Non-Volatile Scratch-Pad FLASH
• Battery Fuel Gauge Based on Patented
Impedance Track™ Technology
– Models the Battery Discharge Curve for
Accurate Time-to-Empty Predictions
– Automatically Adjusts for Battery Aging,
Battery Self-Discharge, and
Temperature/Rate Inefficiencies
– Low-Value Sense Resistor (10 mΩ or Less)
2
• I
C™ Interface for Connection to System
Microcontroller Port
• 12-Pin 2,5-mm × 4-mm SON Package
Power
Management
Controller
1
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 data sheet.
Impedance Track, bqEASY are trademarks of Texas Instruments.
2
I2C is a trademark of NXP B.V.
3
All other trademarks are the property of their respective owners.
4
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
SLUS914A – OCTOBER 2009 – REVISED DECEMBER 2009
Check for Samples:
bq27500-V130
1.2
APPLICATIONS
Smart Phones
PDAs
Digital Still and Video Cameras
Handheld Terminals
MP3 or Multimedia Players
1.3
DESCRIPTION
The Texas Instruments bq27500 system-side Li-Ion
battery fuel gauge is a microcontroller peripheral that
provides fuel gauging for single-cell Li-Ion battery
packs.
The
microcontroller firmware development. The bq27500
resides on the system main board and manages an
embedded battery (non-removable) or a removable
battery pack.
The bq27500 uses the patented Impedance Track
algorithm for fuel gauging, and provides information
such
as
state-of-charge (%), run-time to empty (min.), battery
voltage (mV), and temperature (°C).
Battery fuel gauging with the bq27500 requires only
PACK+ (P+), PACK– (P–), and Thermistor (T)
connections
embedded battery.
TYPICAL APPLICATION
Host System
LDO
Voltage
PACK+
Sense
Battery
Low
Warning
Temp
2
Sense
I C
bq27500
Battery
PACK–
Good
Current
Sense
bq27500-V130
device
requires
little
remaining
battery
capacity
to
a
removable
battery
pack
Single-Cell Li-Ion
Battery Pack
Protection
IC
T
CHG
FETs
DSG
Copyright © 2009, Texas Instruments Incorporated
system
(mAh),
or

BQ27500-V130 Summary of contents

  • Page 1

    ... TYPICAL APPLICATION Host System LDO Voltage PACK+ Sense Battery Low Warning Temp 2 Sense I C bq27500 Battery PACK– Good Current Sense bq27500-V130 device requires little remaining battery capacity to a removable battery pack Single-Cell Li-Ion Battery Pack Protection IC T CHG FETs DSG Copyright © ...

  • Page 2

    ... APPLICATION-SPECIFIC FLOW AND CONTROL ...................................................... ............ 7 7 COMMUNICATIONS ..... INTERFACE 2 7 TIME OUT 7 COMMAND WAITING TIME 8 REFERENCE SCHEMATICS 10 8.1 SCHEMATIC 17 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com ...... 18 .................................. 18 ............. 19 .......................... 19 ........................ 21 ................................... 21 ..................... 22 24 ................ 26 .............. 27 ........................................ 27 ................................... 28 ................................ 31 ............................... 31 ......... Copyright © 2009, Texas Instruments Incorporated ...

  • Page 3

    ... CSP PACKAGE (BOTTOM VIEW Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 TAPE and REEL COMMUNICATION FORMAT QUANTITY 3000 250 3000 250 SLUZ015 R θJA 176°C/W (1) (2) DERATING FACTOR ABOVE T = 25° mW/° ...

  • Page 4

    ... Processor power input. Decouple with 0.1-μF capacitor, minimum. Device ground. Electrically connected to the IC exposed thermal pad (do not P use thermal pad as primary ground. Connect thermal pad to V trace). Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com via a PCB SS Copyright © 2009, Texas Instruments Incorporated ...

  • Page 5

    ... Hibernate Current LOAD – External pullup resistor connected BAT INSERT CHECK MODE active BAT INSERT CHECK MODE active Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 VALUE UNIT –0.3 to 2.75 V –0 –0 – – ...

  • Page 6

    ... –40°C to 85° 2 25°C and V = 2.5 V (unless otherwise noted TEST CONDITIONS – (SRP) Single conversion Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com MIN TYP MAX UNIT 2.09 2.2 2. 115 185 mV MIN TYP MAX UNIT – ...

  • Page 7

    ... V = 2.5 V (unless otherwise noted TEST CONDITIONS (1) (1) = 25°C and V = 2.5 V (unless otherwise noted TEST CONDITIONS Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 MIN TYP MAX UNIT –0 125 bits MΩ ...

  • Page 8

    ... SLUS914A – OCTOBER 2009 – REVISED DECEMBER 2009 Figure 3- ELECTRICAL SPECIFICATIONS 2 C-Compatible Interface Timing Diagrams Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com Copyright © 2009, Texas Instruments Incorporated ...

  • Page 9

    ... Copyright © 2009, Texas Instruments Incorporated SLUS914A – OCTOBER 2009 – REVISED DECEMBER 2009 = 10.0 kΩ ± 1% and B25/85 = 3435 K ± 1% (such as 25 Section 5.7, Power Modes. NOTE Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 and the battery PACK– terminal. SS GENERAL DESCRIPTION 9 ...

  • Page 10

    ... MLTTE 0x20 / 0x21 AE 0x22 / 0x23 AP 0x24 / 0x25 TTECP 0x26 / 0x27 RSVD 0x28 / 0x29 CC 0x2a / 0x2b SOC 0x2c / 0x2d Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com Table 4- transmissions must be 2 Section Interface. UNITS SEALED ACCESS N/A R/W mA R/W Minutes R 0 ...

  • Page 11

    ... Places the bq27500 in calibration mode 0x0041 No Forces a full reset of the bq27500 Table 4-3. CONTROL_STATUS Bit Definitions bit5 bit4 bit3 SS CSV CCA SNOOZE SLEEP LDMD Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 DESCRIPTION bit2 bit1 bit0 BCA – – RUP_DIS VOK QEN GENERAL DESCRIPTION 11 ...

  • Page 12

    ... Instructs the fuel gauge to set the CONTROL_STATUS [SNOOZE] bit to 0. This disables the SLEEP+ mode. The gauge exits from the SLEEP+ power mode after the [SNOOZE] bit is cleared. 12 GENERAL DESCRIPTION Section 5.3.3. Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com Copyright © 2009, Texas Instruments Incorporated ...

  • Page 13

    ... Flags( ): 0x0a/0x0b This read-only function returns the contents of the fuel-gauge status register, depicting the present operating status. Copyright © 2009, Texas Instruments Incorporated SLUS914A – OCTOBER 2009 – REVISED DECEMBER 2009 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 GENERAL DESCRIPTION 13 ...

  • Page 14

    ... GENERAL DESCRIPTION Table 4-4. Flags Bit Definitions bit5 bit4 bit3 – – CHG_INH OCV_GD WAIT_ID BAT_DET Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com bit2 bit1 bit0 XCHG FC CHG SOC1 SOCF DSG Copyright © 2009, Texas Instruments Incorporated ...

  • Page 15

    ... This read-only function returns an unsigned integer value of the predicted remaining battery capacity expressed as a percentage of FullChargeCapacity( ), with a range 100%. Copyright © 2009, Texas Instruments Incorporated SLUS914A – OCTOBER 2009 – REVISED DECEMBER 2009 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 GENERAL DESCRIPTION 15 ...

  • Page 16

    ... DCAP 0x3c / 0x3d DFCLS 0x3e DFBLK 0x3f DFD 0x40…0x5f DFDCKS 0x60 DFDCNTL 0x61 DNAMELEN 0x62 DNAME 0x63...0x69 APPSTAT 0x6a RSVD 0x6b...0x7f Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com SEALED UNSEALED (1) (2) (1) ACCESS ACCESS N mAh R R N/A N/A R/W N/A R/W R/W N/A R ...

  • Page 17

    ... Finally, the data residing in the command space is transferred to data flash, once the correct checksum for the whole block is written to BlockDataChecksum( ) (0x60). Copyright © 2009, Texas Instruments Incorporated SLUS914A – OCTOBER 2009 – REVISED DECEMBER 2009 Section Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 4.1, DATA COMMANDS . These GENERAL DESCRIPTION 17 ...

  • Page 18

    ... Security Mode FULL ACCESS UNSEALED SEALED 18 GENERAL DESCRIPTION Table 4-6. Data Flash refers to those data flash locations, Table 4-6. Data Flash Access Data Flash R/W R/W None Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com Manufacture Information Copyright © 2009, Texas Instruments Incorporated ...

  • Page 19

    ... Taper Current I2 2 Minimum Taper Charge I2 4 Taper Voltage I2 6 Current Taper Window Set % Clear % I1 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 Min Max Default Units Value Value Value 0 1200 550 0.1° 1200 500 0.1°C 0 1200 600 0.1° ...

  • Page 20

    ... Transient Factor Discharge U1 12 Max IR Correct Enable H1 1 Application Status H1 2 Qmax Cell Cycle Count 0 U2 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com Min Max Default Units Value Value Value –128 0 –10 mA –32,767 0 –500 mA 100 32,767 ...

  • Page 21

    ... Pack V Offset I1 1 Deadband U1 0 Unseal Key Unseal Key Full-Access Key Full-Access Key 1 H2 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 Min Max Default Units Value Value Value 0x00 0x03 0x00 – 0 32767 1000 mAh 0 65,535 0 – ...

  • Page 22

    ... User_Rate-10mW: Use the value in User_Rate-10mW. This mode provides a completely user-configurable method. 22 FUNCTIONAL DESCRIPTION Section 5.2.2). When Load Mode is 0, the Constant Current model Current Model Used Table 5-2 Power Model Used Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com are available. Copyright © 2009, Texas Instruments Incorporated ...

  • Page 23

    ... Copyright © 2009, Texas Instruments Incorporated SLUS914A – OCTOBER 2009 – REVISED DECEMBER 2009 Table 4-7 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 Table 4-7, which should be Table 4-7, which should be and should be above the standby FUNCTIONAL DESCRIPTION ...

  • Page 24

    ... Some bq27500 pins are configured via the Operation Configuration data flash register, as indicated in Table 5-3. This register is programmed/read via the methods described in Data Flash. The register is located at subclass = 64, offset = 0. 24 FUNCTIONAL DESCRIPTION Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com Section 4.2.1, Accessing the Copyright © 2009, Texas Instruments Incorporated ...

  • Page 25

    ... Table 5-4). Default is 0/0/1. pin (pin 6) is selected as ground reference when the bit is clear. Pin 7 is selected SS Section 5.6.2, Charge Inhibit, for additional details. Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 bit2 bit1 bit0 IWAKE RSNS1 RSNS0 BATG_POL BATL_CTL TEMPS C engine clock-stretches if the bit is ...

  • Page 26

    ... Additional circuit information for connecting this thermistor to the bq27500 is shown in Reference Schematic. 26 FUNCTIONAL DESCRIPTION Section 4.1.1, Standard Data Commands, for = 10.0 kΩ ± 1% and B25/85 = 3435 K ± 1% (such as 25 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com Section 8, Copyright © 2009, Texas Instruments Incorporated ...

  • Page 27

    ... At that time, the bq27500 samples the temperature. This saves battery energy when operating from battery, as periodic temperature updates are avoided during charging mode. Copyright © 2009, Texas Instruments Incorporated SLUS914A – OCTOBER 2009 – REVISED DECEMBER 2009 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 FUNCTIONAL DESCRIPTION 27 ...

  • Page 28

    ... Some commands issued by a system processor can be processed while the bq27500 is halted in this mode. The gauge wakes up to process the command, then returns to the halted state awaiting battery insertion. 28 FUNCTIONAL DESCRIPTION Figure 5-1. Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com Copyright © 2009, Texas Instruments Incorporated ...

  • Page 29

    ... OR V < Hibernate Voltage CELL System Sleep Figure 5-1. Power Mode Diagram Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 Exit From SLEEP Flags [BAT_DET Exit From SLEEP | AverageCurrent > Sleep Current OR Current is Detected above I WAKE Exit From SLEEP+ Any communication to the gauge OR | AverageCurrent > ...

  • Page 30

    ... After waking, the gauge can proceed with the initialization of the battery information (OCV, profile selection, etc.) 30 FUNCTIONAL DESCRIPTION through R WAKE SENSE 2 C command to the gauge or a POR occurs. I Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com through R is WAKE SENSE is detected communication that is Copyright © 2009, Texas Instruments Incorporated ...

  • Page 31

    ... SLUS914A – OCTOBER 2009 – REVISED DECEMBER 2009 Table 5-4. I Threshold Settings WAKE IWAKE Vth (SRP – SRN 1 –1 2 –2 2 –2 4 –4 4 –4 9 –9.8 mV Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 (1) (2) Disabled Disabled FUNCTIONAL DESCRIPTION 31 ...

  • Page 32

    ... APPLICATION-SPECIFIC INFORMATION from the measured Table 6-1. ApplicationStatus( ) Bit Definitions. bit5 bit4 bit3 — — — Section Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com voltage and the load current: bit2 bit1 bit0 — — LU_ PROF 6.1.2.1, First OCV and Impedance ...

  • Page 33

    ... A ADDR[6: DATA [7:0] Sr (d) incremental read A CMD[7:0] A DATA [7:0] (e) incremental write 2 C bus is held low for about 2 seconds. If the bq27500 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 ADDR[6: DATA [7:0] N (b) quick read 1 A DATA [7: DATA [7: DATA [7:0] A ...

  • Page 34

    ... C clock stretch could happen in a typical A DATA [7:0] A DATA [7: ADDR[6: DATA [7: ADDR[6: DATA [7: Submit Documentation Feedback Product Folder Link(s): bq27500-V130 www.ti.com DATA [7: DATA [7:0] A Copyright © 2009, Texas Instruments Incorporated ...

  • Page 35

    ... REFERENCE SCHEMATICS 8.1 SCHEMATIC Copyright © 2009, Texas Instruments Incorporated SLUS914A – OCTOBER 2009 – REVISED DECEMBER 2009 Submit Documentation Feedback Product Folder Link(s): bq27500-V130 bq27500-V130 REFERENCE SCHEMATICS 35 ...

  • Page 36

    ... BQ27500DRZR-V130 ACTIVE BQ27500DRZT-V130 ACTIVE BQ27500YZGR-V130 ACTIVE BQ27500YZGT-V130 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design ...

  • Page 37

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing BQ27500DRZR-V130 SON DRZ BQ27500DRZT-V130 SON DRZ BQ27500YZGR-V130 DSBGA YZG PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 12 3000 330.0 12.4 2.8 12 250 330.0 12.4 2.8 12 3000 180.0 8 ...

  • Page 38

    ... Device Package Type BQ27500DRZR-V130 SON BQ27500DRZT-V130 SON BQ27500YZGR-V130 DSBGA PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) DRZ 12 3000 DRZ 12 250 YZG 12 3000 Pack Materials-Page 2 16-Feb-2012 Width (mm) Height (mm) 338.1 338.1 20.6 338.1 338.1 20.6 210.0 185.0 35.0 ...

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    X: Max = 2.48 mm, Min = 2.379 mm Y: Max = 2.006 mm, Min = 1.906 mm ...

  • Page 43

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...