TI BQ27411DRZ-G1A

bq27411-G1
www.ti.com
SLUSBN7 – JANUARY 2014
Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration
Check for Samples: bq27411-G1
FEATURES
APPLICATIONS
•
•
•
•
•
1
2
•
•
Single Series Cell Li-Ion Battery Fuel Gauge
– Resides in Battery Pack
– Low-Value external Sense Resistor
(10mΩ typical)
– One Time Programmable (OTP)
configuration Non-Volatile Memory (NVM)
– Powered directly from battery with
integrated LDO
– 400-kHz I2C serial interface
– Internal temperature sensor, or
Host reported temperature
Easy to configure fuel gauging based on
patented Impedance Track™ technology
– Reports Remaining Capacity and State of
Charge (SOC) with Smoothing Filter
– Automatically adjusts for battery aging,
self-discharge, temperature, and rate
changes
– Battery State of Health (aging) estimation
Small 12-pin 2.5 mm × 4 mm SON Package
Smartphones, Feature phones and Tablets
Digital Still and Video Cameras
Handheld Terminals
MP3 or Multimedia Players
DESCRIPTION
The Texas Instruments bq27411-G1 is an easy to
configure fuel gauging solution for single series cell
Li-Ion battery packs. The device requires minimal
configuration and uses One Time Programmable
(OTP) Non-Volatile Memory (NVM) to avoid an
initialization download by the system processor.
The bq27411-G1 uses the patented Impedance
Track™ algorithm for fuel gauging, and provides
information such as remaining battery capacity
(mAh), state-of-charge (%), and battery voltage (mV).
The small 12-pin 2.5 mm × 4 mm SON package is
ideal for space constrained applications.
TYPICAL APPLICATION
Battery Pack
PACKP
PROG
bq27411
1.0 M
I2C Bus
SDA
SDA
SCL
SCL
Couloumb
Counter
Current
ADC
SRN
Diff. Input
OTP
Data
I-Wake
CPU
BAT
Voltage
ADC
TEST
Die Temp
Sensor
1.0 M
BAT
10 m,
1% shunt
SRP
1.8V
LDO
VSS
VDD
Li-Ion
Cell
0.47uF
Protection IC
PACKN
FET
FET
1
2
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 is a trademark of Texas Instruments.
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.
Copyright © 2014, Texas Instruments Incorporated
bq27411-G1
SLUSBN7 – JANUARY 2014
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.
DEVICE INFORMATION
AVAILABLE OPTIONS
PART NUMBER
bq27411DRZR-G1A
bq27411DRZT-G1A
bq27411DRZR-G1B
bq27411DRZT-G1B
bq27411DRZR-G1C
bq27411DRZT-G1C
(1)
(2)
(3)
(4)
BATTERY
TYPE
CHEM_ID
(1)
LiCoO2
(4.2 V max charge)
0x0128
LiMn2O4
(4.3 V max charge)
0x0312
LiMn2O4
(4.35 V max charge)
0x0354
DM_CODE
(2)
FIRMWARE
VERSION
(3)
PACKAGE
(4)
TA
3000
0x80
0x90
TAPE and
REEL
QUANTITY
250
1.09
(0x0109)
12-pin,
2.5 × 4 mm
SON
–40°C
to
85°C
3000
250
3000
0xA0
250
Refer to the CHEM_ID subcommand to confirm the battery chemistry type.
Refer to the DM_CODE subcommand to confirm the Data Memory code.
Refer to the FW_VERSION subcommand to confirm the firmware version.
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.
THERMAL INFORMATION
THERMAL METRIC (1)
bq27411-G1
DRZ (12-PINS)
θJA
Junction-to-ambient thermal resistance
64.1
θJCtop
Junction-to-case (top) thermal resistance
59.8
θJB
Junction-to-board thermal resistance
52.7
ψJT
Junction-to-top characterization parameter
0.3
ψJB
Junction-to-board characterization parameter
28.3
θJCbot
Junction-to-case (bottom) thermal resistance
2.4
(1)
2
UNITS
°C/W
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
bq27411-G1
www.ti.com
SLUSBN7 – JANUARY 2014
PIN DIAGRAM AND PACKAGE DIMENSIONS
PIN DIAGRAM
(TOP VIEW)
SDA
1
12
PROG
SCL
2
11
NC
VSS
3
10
TEST
NC
4
9
NC
VDD
5
8
SRP
BAT
6
7
SRN
bq27411
12-pin VSON, 2.5 x 4mmm 0.4mm pitch
PIN FUNCTIONS
PIN
NAME
NO.
TYPE
(1)
DESCRIPTION
BAT
6
PI, AI
LDO regulator input, battery voltage input, and coulomb counter input typically connected to the PACK+ terminal.
VDD
5
PO
1.8V Regulator Output. Decouple with 0.47μF ceramic capacitor to Vss. This pin is not intended to provide power
for other devices in the system.
VSS
3
PI
Ground pin.
SRP
8
AI
SRN
7
AI
Coulomb counter differential inputs expecting an external 10mΩ, 1% sense resistor. Connect SRP to BAT (CELLP)
and connect SRN to PACKP. Refer to application diagram.
PROG
12
DO
SDA
1
DIO
SCL
2
DIO
TEST
10
DI
This digital factory TEST pin must be pulled low for proper operation in customer's application. Recommend
terminating with a 1.0MΩ (typical) pull-down resistor to VSS for reduced power consumption.
4, 8, 11
--
No internal connection. May be left floating or tied to VSS.
NC
(1)
Programming voltage input for the One Time Programmable (OTP) memory to be used during customer factory
configuration. To avoid a floating input condition, recommend terminating with a 1.0MΩ (typical) pull-down resistor
to VSS for reduced power consumption.
Slave I2C serial bus for communication with system (Master). Open-drain pins. Use with external 5 - 10kΩ pull-up
resistors (typical) for each pin. If the external pull-up resistors will be disconnected from these pins during normal
operation, recommend using external 1.0MΩ pull-down resistors to VSS at each pin to avoid floating inputs.
I/O = Digital input/output, IA = Analog input, P = Power connection
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
3
bq27411-G1
SLUSBN7 – JANUARY 2014
www.ti.com
ELECTRICAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted) (1)
PARAMETER
VBAT
VSR
MIN
MAX
UNIT
BAT pin input voltage range
–0.3
6
V
SRP and SRN pins input voltage range
-0.3
[VBAT + 0.3]
V
2
V
Differential voltage across SRP and SRN. ABS(SRP - SRN).
VDD
VDD pin supply voltage range (LDO ouptut)
–0.3
2
V
VIOD
Open-drain I/O pins (SDA, SCL)
–0.3
6
V
VPROG
PROG pin
–0.3
7.8
V
VIOPP
Push-Pull I/O pins (TEST )
–0.3
[VDD + 0.3]
V
TA
Operating free-air temperature range
–40
85
°C
TSTG
Storage temperature range
–65
150
°C
(1)
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
TA = 30°C and VREGIN = VBAT = 3.6V (unless otherwise noted)
PARAMETER
CBAT
CLDO18
VPU
External input capacitor for internal
LDO between BAT and VSS
(1)
(1)
(1)
External output capacitor for internal
LDO between VDD and VSS
PROG Programming Voltage [RA0]
IPV
PROG Programming Current [RA0]
MIN
Nominal capacitor values specified.
Recommend a 5% ceramic X5R type
capacitor located close to the device.
External pull-up voltage for opendrain pins (SDA, SCL, PROG )
VPV
(1)
TEST CONDITIONS
TYP
7.3
UNIT
0.1
μF
0.47
μF
1.62
TA = 15°C to 35°C. OTP Programming
mode only.
MAX
3.6
7.4
7.5
4
5
TYP
MAX
V
V
mA
Specified by design. Not production tested.
SUPPLY CURRENT
TA = 30°C and VREGIN = VBAT = 3.6V (unless otherwise noted)
PARAMETER
ICC
(1)
ISLP
(1)
IHIB
(1)
ISD
(1)
(2)
4
(1)
TEST CONDITIONS
MIN
UNIT
NORMAL mode current
ILOAD > Sleep Current
(2)
93
μA
SLEEP mode current
ILOAD < Sleep Current
(2)
21
μA
9
μA
0.6
μA
(2)
HIBERNATE mode current
ILOAD < Hibernate Current
SHUTDOWN mode current
Fuel gauge in host commanded
SHUTDOWN mode.
(LDO Regulator Output Disabled.)
Specified by design. Not production tested.
Wake Comparator Disabled.
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
bq27411-G1
www.ti.com
SLUSBN7 – JANUARY 2014
DIGITAL INPUT AND OUTPUT DC CHARACTERISTICS
TA = –40°C to 85°C, typical values at TA = 30°C and VREGIN = 3.6 V (unless otherwise noted)(Force Note1) (1)
PARAMETER
TEST CONDITIONS
VIH(OD)
Input voltage, high
(2)
VIH(PP)
Input voltage, high
(3)
VIL
Input voltage, low
VOL
Output voltage, low
External pullup resistor to VPU
(1)
(2)
(3)
V
V
V
(2)
0.6
V
0.5
mA
-3
mA
5
pF
Output sink current, low
Ilkg
VPU x 0.7
UNIT
0.6
Output source current, high
Input capacitance
MAX
(2) (3)
IOL(OD)
(1)
TYP
1.4
IOH
CIN
MIN
(2)
(2)
(2) (3)
Input leakage current
(2) (3)
SCL, SDA, and TEST pins
0.1
PROG pin
1.0
μA
Specified by design. Not production tested.
Open Drain pins: (SCL, SDA, PROG )
Push Pull pin: (TEST )
LDO REGULATOR, WAKE-UP AND AUTO-SHUTDOWN DC CHARACTERISTICS
TA = –40°C to 85°C, typical values at TA = 30°C and VREGIN = 3.6 V (unless otherwise noted)(Force Note1) (1)
PARAMETER
VBAT
BAT pin regulator input
VDD
Regulator output voltage
UVLOIT+
VBAT Under Voltage Lock Out
LDO Wake-Up Rising Threshold
UVLOIT-
VBAT Under Voltage Lock Out
LDO Auto-Shutdown Falling
Threshold
(1)
TEST CONDITIONS
MIN
TYP
2.45
MAX
4.5
UNIT
V
1.8
V
2
V
1.95
V
Specified by design. Not production tested.
ADC (TEMPERATURE AND CELL MEASUREMENT) CHARACTERISTICS
TA = –40°C to 85°C; typical values at TA = 30°C and VREGIN = 3.6 V (unless otherwise noted) (Force Note1) (1)
PARAMETER
VIN(BAT)
BAT pin voltage measurement
range.
tADC_CONV
Conversion time
TEST CONDITIONS
Voltage divider enabled.
MIN
Effective Resolution
(1)
TYP
2.45
MAX
4.5
UNIT
V
125
ms
15
bits
Specified by design. Not tested in production.
INTEGRATING ADC (COULOMB COUNTER) CHARACTERISTICS
TA = –40°C to 85°C; typical values at TA = 30°C and VREGIN = 3.6 V (unless otherwise noted)(Force Note1) (1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
Input voltage range from BAT to
SRX pins
tSR_CONV
Conversion time
Single conversion
1
s
Effective Resolution
Single conversion
16
bits
(1)
BAT ± 25
UNIT
VSR
mV
Specified by design. Not tested in production.
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
5
bq27411-G1
SLUSBN7 – JANUARY 2014
www.ti.com
I2C-COMPATIBLE INTERFACE COMMUNICATION TIMING CHARACTERISTICS
TA = –40°C to 85°C; typical values at TA = 30°C and VREGIN = 3.6 V (unless otherwise noted) (Force Note1) (1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Standard Mode (100 kHz)
4
μs
4.7
μs
4
μs
4.7
μs
250
ns
td(STA)
Start to first falling edge of SCL
tw(L)
SCL pulse duration (low)
tw(H)
SCL pulse duration (high)
tsu(STA)
Setup for repeated start
tsu(DAT)
Data setup time
Host drives SDA
th(DAT)
Data hold time
Host drives SDA
0
ns
tsu(STOP)
Setup time for stop
4
μs
t(BUF)
Bus free time between stop and Includes Command Waiting Time
start
66
μs
tf
SCL/SDA fall time
tr
SCL/SDA rise time
fSCL
Clock frequency (2)
(1)
300
(1)
ns
300
ns
100
kHz
Fast Mode (400 kHz)
td(STA)
Start to first falling edge of SCL
600
ns
tw(L)
SCL pulse duration (low)
1300
ns
tw(H)
SCL pulse duration (high)
600
ns
tsu(STA)
Setup for repeated start
600
ns
tsu(DAT)
Data setup time
Host drives SDA
100
ns
th(DAT)
Data hold time
Host drives SDA
0
ns
tsu(STOP)
Setup time for stop
600
ns
t(BUF)
Bus free time between stop and Includes Command Waiting Time
start
66
μs
tf
SCL/SDA fall time
tr
SCL/SDA rise time
fSCL
Clock frequency (2)
(1)
(2)
(1)
300
(1)
ns
300
ns
400
kHz
Specified by design. Not production tested.
If the clock frequency (fSCL) is > 100 kHz, use 1-byte write commands for proper operation. All other transactions types are supported at
400 kHz. (Refer to I2C INTERFACE and I2C Command Waiting Time)
tSU(STA)
tw(H)
tf
tw(L)
tr
t(BUF)
SCL
SDA
td(STA)
tsu(STOP)
tf
tr
th(DAT)
tsu(DAT)
REPEATED
START
STOP
START
Figure 1. I2C-Compatible Interface Timing Diagrams
6
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
bq27411-G1
www.ti.com
SLUSBN7 – JANUARY 2014
GENERAL DESCRIPTION
The bq27411-G1 accurately predicts the battery capacity and other operational characteristics of a single Libased rechargeable cell. It can be interrogated by a system processor to provide cell information, such as stateof-charge (SOC). The bq27411-G1 is available in several options optimized for different battery cell chemistries.
(See AVAILABLE OPTIONS table.) Configuration parameters unique to the customer's application are
programmed in OTP memory at the customer's factory using a 7.4V typical voltage applied to the PROG pin and
a set of I2C programming commands. More details are available in the SmartFlash OTP Programming
(SLUA703) document.
Information is accessed through a series of commands, called Standard Commands. Further capabilities are
provided by the additional Extended Commands set. Both sets of commands, indicated by the general format
Command( ), are used to read and write information contained within the bq27411-G1 control and status
registers, as well as its data locations.
The key to the bq27411-G1’s high-accuracy gas gauging prediction is Texas Instrument’s proprietary Impedance
Track™ algorithm. This algorithm uses cell measurements, characteristics, and properties to create state-ofcharge predictions that can achieve high accuracy across a wide variety of operating conditions and over the
lifetime of the battery.
The bq27411-G1 measures charge/discharge activity by monitoring the voltage across a small-value sense
resistor. When a cell is attached to the bq27411-G1, cell impedance is computed, based on cell current, cell
open-circuit voltage (OCV), and cell voltage under loading conditions.
The bq27411-G1 uses an integrated temperature sensor for estimating cell temperature. Alternatively, the host
processor can provide temperature data for the bq27411-G1.
To minimize power consumption, the bq27411-G1 has several power modes: INITIALIZATION, NORMAL,
SLEEP, and HIBERNATE. The bq27411-G1 passes automatically between these modes, depending upon the
occurrence of specific events, though a system processor can initiate some of these modes directly. More details
are found in the bq27411-G1 Technical Reference Manual (SLUUAS7).
NOTE
Formatting Conventions in this Document:
Commands: italics with parentheses( ) and no breaking spaces, for example,
RemainingCapacity( ).
Data Flash: italics, bold, and breaking spaces, for example, Design Capacity.
Register bits and flags: italics with brackets [ ], for example, [TDA]
Data flash bits: italics, bold, and brackets [ ], for example, [LED1]
Modes and states: ALL CAPITALS, for example, UNSEALED mode.
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
7
bq27411-G1
SLUSBN7 – JANUARY 2014
www.ti.com
DATA COMMANDS
STANDARD DATA COMMANDS
The bq27411-G1 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 . Because each
command consists of two bytes of data, two consecutive I2C transmissions must be executed both to initiate the
command function, and to read or write the corresponding two bytes of data. Additional details are found in the
bq27411-G1 Technical Reference Manual (SLUUAS7).
Table 1. Standard Commands
NAME
COMMAND
CODE
SEALED ACCESS
Control( )
CNTL
0x00 / 0x01
N/A
R/W
Temperature( )
TEMP
0x02 / 0x03
0.1°K
R/W
VOLT
0x04 / 0x05
mV
R
FLAGS
0x06 / 0x07
N/A
R
NominalAvailableCapacity( )
0x08 / 0x09
mAh
R
FullAvailableCapacity( )
0x0a / 0x0b
mAh
R
Voltage( )
Flags( )
RemainingCapacity( )
RM
0x0c / 0x0d
mAh
R
FullChargeCapacity( )
FCC
0x0e / 0x0f
mAh
R
AverageCurrent( )
0x10 / 0x11
mA
R
StandbyCurrent( )
0x12 / 0x13
mA
R
MaxLoadCurrent( )
0x14 / 0x15
mA
R
AveragePower( )
0x18 / 0x19
mW
R
0x1c / 0x1d
%
R
0x1e / 0x1f
0.1°K
R
0x20 / 0x21
num / %
R
StateOfCharge( )
SOC
IntTemperature( )
StateOfHealth( )
8
UNITS
SOH
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
bq27411-G1
www.ti.com
SLUSBN7 – JANUARY 2014
Control( ): 0x00/0x01
Issuing a Control( ) command requires a subsequent 2-byte subcommand. These additional bytes specify the
particular control function desired. The Control( ) command allows the system to control specific features of the
bq27411-G1 during normal operation and additional features when the device is in different access modes, as
described in . Additional details are found in the bq27411-G1 Technical Reference Manual (SLUUAS7).
Table 2. Control( ) Subcommands
CNTL FUNCTION
CNTL DATA
SEALED ACCESS
CONTROL_STATUS
0x0000
Yes
DESCRIPTION
Reports the status of device.
DEVICE_TYPE
0x0001
Yes
Reports the device type (0x0421).
FW_VERSION
0x0002
Yes
Reports the firmware version of the device.
DM_CODE
0x0004
Yes
Reports the Data Memory Code number stored in NVM.
PREV_MACWRITE
0x0007
Yes
Returns previous MAC command code.
CHEM_ID
0x0008
Yes
Reports the chemical identifier of the Impedance Track™ configuration
SET_HIBERNATE
0x0011
Yes
Forces CONTROL_STATUS [HIBERNATE] to 1.
CLEAR_HIBERNATE
0x0012
Yes
Forces CONTROL_STATUS [HIBERNATE] to 0.
SET_CFGUPDATE
0x0013
No
Force CONTROL_STATUS [CFGUPMODE] to 1 and gauge enters
CONFIG UPDATE mode.
SEALED
0x0020
No
Places the device in SEALED access mode.
RESET
0x0041
No
Performs a full device reset.
SOFT_RESET
0x0042
No
Gauge exits CONFIG UPDATE mode.
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
9
bq27411-G1
SLUSBN7 – JANUARY 2014
www.ti.com
FUNCTIONAL DESCRIPTION
I2C INTERFACE
The bq27411-G1 supports the standard I2C read, incremental read, quick read, one-byte write, and incremental
write functions. The 7-bit device address (ADDR) is the most significant 7 bits of the hex address and is fixed as
1010101. The first 8 bits of the I2C protocol are, therefore, 0xAA or 0xAB for write or read, respectively.
Host generated
S
ADDR[6:0]
0 A
Gauge generated
CMD [7:0]
A
DATA [7:0]
A P
S
ADDR[6:0]
(a) 1-byte write
S
ADDR[6:0]
0 A
1 A
DATA [7:0]
N P
(b) quick read
CMD [7:0]
A Sr
ADDR[6:0]
1 A
DATA [7:0]
N P
(c) 1- byte read
S
ADDR[6:0]
0 A
CMD [7:0]
A Sr
ADDR[6:0]
1 A
DATA [7:0]
A ...
DATA [7:0]
N P
(d) incremental read
S
ADDR[6:0]
0 A
CMD[7:0]
A
DATA [7:0]
A
DATA [7:0]
A
...
A P
(e) incremental write
(S = Start , Sr = Repeated Start , A = Acknowledge , N = No Acknowledge , and P = Stop).
The quick read returns data at the address indicated by the address pointer. The address pointer, a register
internal to the I2C communication engine, increments whenever data is acknowledged by the bq27411-G1 or the
I2C master. “Quick writes” function in the same manner and are a convenient means of sending multiple bytes to
consecutive command locations (such as two-byte commands that require two bytes of data).
The following command sequences are not supported:
Attempt to write a read-only address (NACK after data sent by master):
Attempt to read an address above 0x6B (NACK command):
I2C Time Out
The I2C engine releases both SDA and SCL if the I2C bus is held low for 2 seconds. If the bq27411-G1 is holding
the lines, releasing them frees them for the master to drive the lines. If an external condition is holding either of
the lines low, the I2C engine enters the low-power sleep mode.
10
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
bq27411-G1
www.ti.com
SLUSBN7 – JANUARY 2014
I2C Command Waiting Time
To ensure proper operation at 400 kHz, a t(BUF) ≥ 66 μs bus-free waiting time must be inserted between all
packets addressed to the bq27411-G1. In addition, if the SCL clock frequency (fSCL) is > 100 kHz, use individual
1-byte write commands for proper data flow control. The following diagram shows the standard waiting time
required between issuing the control subcommand the reading the status result. For read-write standard
command, a minimum of 2 seconds is required to get the result updated. For read-only standard commands,
there is no waiting time required, but the host must not issue any standard command more than two times per
second. Otherwise, the gauge could result in a reset issue due to the expiration of the watchdog timer.
S
ADDR [6:0]
0 A
CMD [7:0]
A
DATA [7:0]
A P
66ms
S
ADDR [6:0]
0 A
CMD [7:0]
A
DATA [7:0]
A P
66ms
S
ADDR [6:0]
0 A
CMD [7:0]
A Sr
ADDR [6:0]
1 A
DATA [7:0]
A
DATA [7:0]
N P
66ms
N P
66ms
Waiting time inserted between two 1-byte write packets for a subcommand and reading results
(required for 100 kHz < fSCL £ 400 kHz)
S
ADDR [6:0]
0 A
CMD [7:0]
A
DATA [7:0]
S
ADDR [6:0]
0 A
CMD [7:0]
A Sr
ADDR [6:0]
A
1 A
DATA [7:0]
DATA [7:0]
A P
A
66ms
DATA [7:0]
Waiting time inserted between incremental 2-byte write packet for a subcommand and reading results
(acceptable for fSCL £ 100 kHz)
S
ADDR [6:0]
DATA [7:0]
0 A
A
CMD [7:0]
DATA [7:0]
A Sr
N P
ADDR [6:0]
1 A
DATA [7:0]
A
DATA [7:0]
A
66ms
Waiting time inserted after incremental read
I2C Clock Stretching
A clock stretch can occur during all modes of fuel gauge operation. In SLEEP and HIBERNATE modes, a short ≤
100 µs clock stretch occurs on all I2C traffic as the device must wake-up to process the packet. In the other
modes ( INITIALIZATION , NORMAL) a ≤ 4 ms clock stretching period may occur within packets addressed for
the fuel gauge as the I2C interface performs normal data flow control.
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
11
bq27411-G1
SLUSBN7 – JANUARY 2014
www.ti.com
REFERENCE SCHEMATIC
SDA
SCL
Optional ESD Filter
C4
R6
1M
R10
100
R11
100
R7
300
R8
300
R9
1M
150pF
C5
150pF
PGND
PGND
TP1
PROG
U1
2
3
4
PGND
5
6
C1
SDA
SCL
VSS
NC
bq27411
NC
SRP
SRN
12
11
R4
1.0M
PGND
10
9
PGND
8
7
13
0.47uF
TEST
NC
VDD
BAT
R5
1.0M
PROG
PWPD
1
PGND
PGND
J2
R1
J1
CELLP
CELLN
1
2
0.010
1
2
C2
1.0uF
SDA
Note: 1% Tol.
SCL
1
PACKP
2
SDA
3
SCL
4
PACKN
Note: SDA & SCL
require 5KOhm
pull-ups provided by
system
PGND
12
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: bq27411-G1
PACKAGE OPTION ADDENDUM
www.ti.com
30-Jan-2014
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
BQ27411DRZ-G1A
PREVIEW
SON
DRZ
12
TBD
Call TI
Call TI
-40 to 85
BQ27411DRZ-G1C
PREVIEW
SON
DRZ
12
TBD
Call TI
Call TI
-40 to 85
BQ27411DRZR-G1A
ACTIVE
SON
DRZ
12
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
-40 to 85
BQ27
411A
BQ27411DRZR-G1C
ACTIVE
SON
DRZ
12
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
-40 to 85
BQ27
411C
BQ27411DRZT-G1A
ACTIVE
SON
DRZ
12
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
-40 to 85
BQ27
411A
BQ27411DRZT-G1C
ACTIVE
SON
DRZ
12
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
-40 to 85
BQ27
411C
(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.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
30-Jan-2014
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
30-Jan-2014
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
BQ27411DRZR-G1A
SON
DRZ
12
3000
330.0
12.4
2.8
4.3
1.2
4.0
12.0
Q2
BQ27411DRZR-G1C
SON
DRZ
12
3000
330.0
12.4
2.8
4.3
1.2
4.0
12.0
Q2
BQ27411DRZT-G1A
SON
DRZ
12
250
180.0
12.4
2.8
4.3
1.2
4.0
12.0
Q2
BQ27411DRZT-G1C
SON
DRZ
12
250
180.0
12.4
2.8
4.3
1.2
4.0
12.0
Q2
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
30-Jan-2014
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
BQ27411DRZR-G1A
SON
DRZ
12
3000
367.0
367.0
35.0
BQ27411DRZR-G1C
SON
DRZ
12
3000
367.0
367.0
35.0
BQ27411DRZT-G1A
SON
DRZ
12
250
210.0
185.0
35.0
BQ27411DRZT-G1C
SON
DRZ
12
250
210.0
185.0
35.0
Pack Materials-Page 2
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. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale
supplied at the time of order acknowledgment.
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.
TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or
endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the
third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered
documentation. Information of third parties may be subject to additional restrictions.
Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice.
TI is not responsible or liable for any such statements.
Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements
concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support
that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which
anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause
harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use
of any TI components in safety-critical applications.
In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.
No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.
Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and
regulatory requirements in connection with such use.
TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use of
non-designated products, TI will not be responsible for any failure to meet ISO/TS16949.
Products
Applications
Audio
www.ti.com/audio
Automotive and Transportation
www.ti.com/automotive
Amplifiers
amplifier.ti.com
Communications and Telecom
www.ti.com/communications
Data Converters
dataconverter.ti.com
Computers and Peripherals
www.ti.com/computers
DLP® Products
www.dlp.com
Consumer Electronics
www.ti.com/consumer-apps
DSP
dsp.ti.com
Energy and Lighting
www.ti.com/energy
Clocks and Timers
www.ti.com/clocks
Industrial
www.ti.com/industrial
Interface
interface.ti.com
Medical
www.ti.com/medical
Logic
logic.ti.com
Security
www.ti.com/security
Power Mgmt
power.ti.com
Space, Avionics and Defense
www.ti.com/space-avionics-defense
Microcontrollers
microcontroller.ti.com
Video and Imaging
www.ti.com/video
RFID
www.ti-rfid.com
OMAP Applications Processors
www.ti.com/omap
TI E2E Community
e2e.ti.com
Wireless Connectivity
www.ti.com/wirelessconnectivity
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2014, Texas Instruments Incorporated