BQ27505YZGR-J5

Manufacturer Part NumberBQ27505YZGR-J5
DescriptionFinished Good For YU8032B6ACSPJ5
ManufacturerTexas Instruments
SeriesImpedance Track™
BQ27505YZGR-J5 datasheet
 


Specifications of BQ27505YZGR-J5

FunctionFuel, Gas Gauge/MonitorBattery ChemistryLithium-Ion (Li-Ion)
Voltage - Supply2.4 V ~ 2.6 VOperating Temperature-40°C ~ 85°C
Mounting TypeSurface MountPackage / Case12-UFBGA, CSPBGA
Lead Free Status / Rohs StatusLead free / RoHS Compliant  
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System-Side Impedance Track™ Fuel Gauge
1 INTRODUCTION
1.1
FEATURES
• Battery Fuel Gauge for 1-Series Li-Ion
123
Applications
• Resides on System Main Board
– Works With Embedded or Removable
Battery Packs
• Microcontroller Peripheral Provides:
– Accurate Battery Fuel Gauging
– Internal Temperature Sensor for Battery
Temperature Reporting
– Battery Low Interrupt Warning
– Battery Insertion Indicator
– Configurable Level of State of Charge (SOC)
Interrupts
– State of Health 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
• 400-kHz I
C™ Interface for Connection to
System Microcontroller Port
• In a 12-Pin NanoFree™ (CSP) Packaging
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, NanoFree are trademarks of Texas Instruments.
2
2
I
C is a trademark of Philips Electronics.
3
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.
1.2
APPLICATIONS
Smartphones and PDAs
Digital Still and Video Cameras
Handheld Terminals
MP3 or Multimedia Players
1.3
DESCRIPTION
The
system-side Li-Ion battery fuel gauge is a
microcontroller peripheral that provides fuel
gauging for single-cell Li-Ion battery packs.
The
micro-controller firmware development. The
bq27505-J5 resides on the system’s main
board and manages an embedded battery
(nonremovable) or a removable battery pack.
The bq27505-J5 uses the patented Impedance
Track algorithm for fuel gauging, and provides
information such as remaining battery capacity
(mAh), state-of-charge (%), run-time to empty
(min), battery voltage (mV), temperature (°C)
and state of health(%).
Battery fuel gauging with the bq27505-J5
requires only PACK+ (P+), PACK– (P–), and
Thermistor (T) connections to a removable
battery pack or embedded battery circuit. The
CSP option is a 12-ball package in the
dimensions of 2.43mm × 1.96mm with 0.5mm
lead pitch. It is ideal for space constrained
applications.
Host System
LDO
VCC
Voltage
PACK+
Sense
Battery
Low
Temp
I2C
DATA
Sense
Power
T
Management
bq27505-J5
Controller
PACK-
BAT_GD
Current
Sense
SOC _INT
Figure 1-1. Typical Application
bq27505-J5
SLVSAL4 – MARCH 2011
Texas
Instruments
bq27505-J5
device
requires
little
system
Single Cell Li-lon
Battery Pack
PROTECTION
IC
CHG
FETs
DSG
Copyright © 2011, Texas Instruments Incorporated

BQ27505YZGR-J5 Summary of contents

  • Page 1

    ... In a 12-Pin NanoFree™ (CSP) Packaging 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, NanoFree are trademarks of Texas Instruments trademark of Philips Electronics. ...

  • Page 2

    ... BATTERY PROFILE STORAGE AND SELECTION ............ ...................................................... 6 ..... 6.2 APPLICATION-SPECIFIC FLOW AND CONTROL 7 ...................................................... 7 COMMUNICATIONS INTERFACE 2 7 Time Out 8 REFERENCE SCHEMATICS 8 8.1 SCHEMATIC Submit Documentation Feedback www.ti.com ............................. 9 ................................ 10 ........................ 19 ...... 20 .................................. 20 ............. 20 .......................... 21 ........................ 23 ................................... 23 .............. 24 .................... 26 ................ 29 .............. 30 ........................................ 30 ................................... 30 ................................ 32 ............................... 33 ......... ................................... 34 .................................... 34 ........................................ 35 ......................... 36 ........................................ 36 Copyright © 2011, Texas Instruments Incorporated ...

  • Page 3

    ... DEVICE INFORMATION 2.1 AVAILABLE OPTIONS PART NUMBER FIRMWARE VERSION bq27505YZGR-J5 2.29 bq27505YZGT-J5 (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com . 2.2 THERMAL INFORMATION THERMAL METRIC θ Junction-to-ambient thermal resistance JA θ ...

  • Page 4

    ... Pack thermistor voltage sense (use 103AT-type thermistor). ADC input (1) I/O = Digital input/output Analog input Power connection 4 DEVICE INFORMATION (BOTTOM VIEW Table 2-1. PIN FUNCTIONS DESCRIPTION Submit Documentation Feedback www.ti.com CSP- Table 5-6. Open drain output. Copyright © 2011, Texas Instruments Incorporated ...

  • Page 5

    ... POWER-ON RESET T = –40°C to 85°C, typical values PARAMETER V Positive-going battery voltage input at V IT+ V Power-on reset hysteresis HYS Copyright © 2011, Texas Instruments Incorporated (1) PARAMETER = 25°C and TEST CONDITIONS Fuel gauge in NORMAL mode. I > Sleep Current LOAD Fuel gauge in SLEEP+ mode. ...

  • Page 6

    ... A MIN TYP MAX UNIT –0.125 0.125 bits 10 μV ±0.007 ±0.034 %FSR 2.5 MΩ 0.3 μA MIN TYP MAX UNIT –0 125 bits 1 mV Copyright © 2011, Texas Instruments Incorporated ...

  • Page 7

    ... Data retention DR Flash-programming write cycles (1) t Word programming time WORDPROG I Flash-write supply current CCPROG (1) Specified by design. Not production tested Copyright © 2011, Texas Instruments Incorporated = 25°C and TEST CONDITIONS (1) bq27505-J5 not measuring cell (1) voltage bq27505-J5 measuring cell voltage = 25°C and ...

  • Page 8

    ... TYP MAX UNIT 300 ns 300 ns 600 ns μs 1.3 600 ns 600 ns 100 600 ns μs 1.3 400 kHz MIN TYP MAX UNIT 1 µs 300 ns 4 µs 4.7 μs 4.7 µs 4 µs 250 µs 4.7 μs 100 kHz Copyright © 2011, Texas Instruments Incorporated ...

  • Page 9

    ... Register bits and flags: brackets and italics, e.g., [TDA] Data flash bits: brackets, italics and bold, e.g., [LED1] Modes and states: ALL CAPITALS, e.g., UNSEALED mode. Copyright © 2011, Texas Instruments Incorporated MANUFACTURER INFORMATION = 10.0 kΩ ±1%. B25/85 = 3435K ± 1% (such as Semitec ...

  • Page 10

    ... R R/W N/A R R/W mAh R R/W mAh R R/W mAh R R/W mAh R R R/W Minutes R R/W Minutes R R R/W Minutes R R R/W Minutes R R/W mWh R R R/W Minutes R R num R R R/W mohm R R R/W Copyright © 2011, Texas Instruments Incorporated ...

  • Page 11

    ... FACTORY_RESTORE 0x0015 SEALED 0x0020 IT_ENABLE 0x0021 CAL_MODE 0x0040 RESET 0x0041 Copyright © 2011, Texas Instruments Incorporated Table 4-2. Table 4-2. Control( ) Subcommands SEALED ACCESS Yes Reports the status of DF checksum, hibernate, IT, etc. Yes Reports the device type (e.g.: bq27505-J5) Yes ...

  • Page 12

    ... UNSEALED. When SEALED, this command only reads back the board-offset value stored in data flash. 12 GENERAL DESCRIPTION Table 4-3. CONTROL_STATUS Bit Definitions bit5 bit4 bit3 SS CSV CCA SNOOZE SLEEP LDMD Submit Documentation Feedback www.ti.com bit2 bit1 bit0 BCA OCVCMDCOMP OCVFAIL RUP_DIS VOK QEN Copyright © 2011, Texas Instruments Incorporated ...

  • Page 13

    ... Instructs the fuel gauge to reset learned resistance tables and Qmax values to the default values. SOC_INT is asserted while the restore is in progress. If gauge is sealed, the restore unsealed code must be sent before the factory restore command. Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback bq27505-J5 SLVSAL4 – ...

  • Page 14

    ... This read-only function returns an unsigned integer value of the temperature in units of 0.1K measured by the fuel gauge. 4.1.1.5 Voltage( ): 0x08/0x09 This read-word function returns an unsigned integer value of the measured cell-pack voltage in mV with a range 6000 mV. 14 GENERAL DESCRIPTION Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback www.ti.com ...

  • Page 15

    ... AverageCurrent( ). The computation accounts for the taper current time extension from the linear TTF computation based on a fixed AverageCurrent( ) rate of charge accumulation. A value of 65,535 indicates the battery is not being charged. Copyright © 2011, Texas Instruments Incorporated Table 4-4. Flags Bit Definitions bit5 ...

  • Page 16

    ... This read-only function returns an unsigned integer value of the predicted remaining operating time if the battery is discharged at the AveragePower( ) value in minutes. A value of 65,535 indicates AveragePower The fuel gauge automatically updates TimeToEmptyatContantPower( ) based on the AveragePower( ) value every GENERAL DESCRIPTION Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback www.ti.com ...

  • Page 17

    ... AuthenticateCheckSum( )/BlockData( ) BlockData( ) BlockDataCheckSum( ) (1) SEALED and UNSEALED states are entered via commands to Control() 0x00/0x01. (2) In sealed mode, data flash CANNOT be accessed through commands 0x3e and 0x3f. Copyright © 2011, Texas Instruments Incorporated Table 4-5. Table 4-5. Extended Data Commands COMMAND CODE RSVD 0x34 ...

  • Page 18

    ... SEALED Access: This command is not available in SEALED mode. 18 GENERAL DESCRIPTION COMMAND UNITS CODE DFDCNTL 0x61 N/A DNAMELEN 0x62 N/A DNAME 0x63...0x69 N/A APPSTAT 0x6a N/A RSVD 0x6b...0x7f N/A Submit Documentation Feedback www.ti.com SEALED UNSEALED (1) (2) (1) (2) ACCESS ACCESS N/A R Copyright © 2011, Texas Instruments Incorporated ...

  • Page 19

    ... None of the data written to memory are bounded by the bq27505-J5 – the values are not rejected by the fuel gauge. Writing an incorrect value may result in hardware failure due to firmware program interpretation of the invalid data. The written data is persistent power-on reset does resolve the fault. Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback bq27505-J5 SLVSAL4 – ...

  • Page 20

    ... CONTROL_STATUS [FAS] bit is cleared. 20 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 Table 4-2. Submit Documentation Feedback www.ti.com Manufacture Information R/W R/W R(A); R/W(B) Copyright © 2011, Texas Instruments Incorporated ...

  • Page 21

    ... Configuration 49 Discharge Configuration 49 Discharge Configuration 49 Discharge Configuration 49 Discharge Configuration 49 Discharge (1) Display as the value EVSW displayed. Data Flash value is different. Copyright © 2011, Texas Instruments Incorporated Table 4-7. Data Flash Summary Offset Name Data Type 0 OT Chg Chg Time Chg Recovery Dsg ...

  • Page 22

    ... Count 0x00 0x03 0x00 – 0 16384 0 – 0 16384 0 – –32,768 32,767 –300 mA Copyright © 2011, Texas Instruments Incorporated ...

  • Page 23

    ... The SOC_INT also signals. When Voltage( ) rises above SysDown Clear Voltage and the [SYSDOWM] flag has already been set, the [SYSDOWN] flag is cleared. The SOC_INT also signals such change. All units are in mV. Copyright © 2011, Texas Instruments Incorporated Offset Name ...

  • Page 24

    ... Reserve Cap-mWh determines how much actual remaining capacity exists after reaching 0 AvailableEnergy( ), before Terminate Voltage is reached. A no-load rate of compensation is applied to this reserve capacity. 24 FUNCTIONAL DESCRIPTION Current Model Used Power Model Used Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback www.ti.com Table 5-2 are available: ...

  • Page 25

    ... The bq27505-J5 logs the current averaged from the beginning to the end of each discharge cycle. It stores this average current from the previous discharge cycle in this register. This register should never need to be modified only updated by the bq27505-J5 when required. Copyright © 2011, Texas Instruments Incorporated Table 4-7 Submit Documentation Feedback bq27505-J5 SLVSAL4 – ...

  • Page 26

    ... This register is programmed/read via the methods described in FLASH. The register is located at subclass = 64, offset = 0. 26 FUNCTIONAL DESCRIPTION Table 5-3. Debug Options bit4 bit3 bit2 RSVD QmaxOnDsg RSVD Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback www.ti.com bit1 bit0 DVMIN DVNOAVG ACCESSING THE DATA ...

  • Page 27

    ... The charger has full usage of the thermistor during battery charging, while the fuel gauge uses the thermistor exclusively during discharge and battery relaxation. The PFC is specified in Operation Configuration [PFC_CFG1, PFC_CFG0]. The default is PFC = 1. Copyright © 2011, Texas Instruments Incorporated bit5 bit4 ...

  • Page 28

    ... Hibernate Voltage CELL Figure 5-1. Power Mode Diagram Submit Documentation Feedback www.ti.com Exit From SLEEP Flags [BAT_DET Exit From SLEEP | AverageCurrent > Sleep Current OR Current is Detected above I WAKE Exit From SLEEP+ OR WAKE Entry to SLEEP+ Control Status[SNOOZE Copyright © 2011, Texas Instruments Incorporated ...

  • Page 29

    ... Alternatively, it can also measure internal temperature via its on-chip temperature sensor, but only if the [TEMPS] bit of Operation Configuration register is cleared. Copyright © 2011, Texas Instruments Incorporated Comment During charge, when the SOC is greater than (≥) the points, 100 × ...

  • Page 30

    ... SLEEP+ mode, both low frequency and high frequency oscillators are active. Although the SLEEP+ has higher current consumption than the SLEEP mode also a reduced power mode. In SLEEP mode, the 30 FUNCTIONAL DESCRIPTION STANDARD DATA REFERENCE Table 4-7. Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback www.ti.com COMMANDS, for specific SCHEMATIC. ...

  • Page 31

    ... The bq27505-J5 exits SLEEP+ if any entry condition is broken, specifically when (1) any communication activity with the gauge, or (2) AverageCurrent( ) rises above Sleep Current, or (3) a current in excess of I through R is detected. WAKE SENSE Copyright © 2011, Texas Instruments Incorporated Figure 5-1. through R WAKE Submit Documentation Feedback bq27505-J5 SLVSAL4 – ...

  • Page 32

    ... V during Flash write operations FUNCTIONAL DESCRIPTION 2 C Communication that is not directed to the gauge Table 5-7. I Threshold Settings WAKE IWAKE Vth(SRP–SRN +1. –1. +2 –2 +2 –2 – – + –10 mV Submit Documentation Feedback www.ti.com (1) Disabled Disabled Copyright © 2011, Texas Instruments Incorporated ...

  • Page 33

    ... Packn, and the default profiles, Defn, for the same SOC (the letter n depicts either 1).The [INITCOMP] bit will be set afterwards and the OCV command could be issued. Copyright © 2011, Texas Instruments Incorporated APPLICATION-SPECIFIC INFORMATION Submit Documentation Feedback bq27505-J5 SLVSAL4 – ...

  • Page 34

    ... DATA [7:0] Sr (d) incremental read A CMD[7:0] A DATA [7:0] (e) incremental write Submit Documentation Feedback www.ti.com bit2 bit1 — — — LU_ PROF First OCV and Impedance ADDR[6: DATA [7:0] (b) quick read 1 A DATA [7: DATA [7:0] A DATA [7: Copyright © 2011, Texas Instruments Incorporated bit0 ...

  • Page 35

    ... Waiting time between control subcommand and reading results S ADDR [6: CMD [7:0] DATA [7:0] A DATA [7:0] Waiting time between continuous reading results Copyright © 2011, Texas Instruments Incorporated 2 C engine will enter the low power sleep mode. A DATA [7:0] A DATA [7:0] A ADDR [6:0] 1 ...

  • Page 36

    ... SLVSAL4 – MARCH 2011 8 REFERENCE SCHEMATICS 8.1 SCHEMATIC 36 REFERENCE SCHEMATICS Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback www.ti.com ...

  • Page 37

    ... PACKAGING INFORMATION Orderable Device (1) Package Type Package Status BQ27505YZGR-J5 ACTIVE DSBGA BQ27505YZGT-J5 ACTIVE DSBGA (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. ...

  • Page 38

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing BQ27505YZGR-J5 DSBGA YZG BQ27505YZGT-J5 DSBGA YZG PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 12 3000 180.0 8.4 2.1 12 250 180.0 8.4 2.1 Pack Materials-Page 1 ...

  • Page 39

    ... Device Package Type BQ27505YZGR-J5 DSBGA BQ27505YZGT-J5 DSBGA PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) YZG 12 3000 YZG 12 250 Pack Materials-Page 2 14-Mar-2011 Width (mm) Height (mm) 190.5 212.7 31.8 190.5 212.7 31.8 ...

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  • Page 41

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