Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - battery management Charge indicator LiCoO2 SON 12 (2.5x4) Surface-mount

Single Cell Li- Ion

Battery Pack

PACK -

PROTECTION

CHG

DSG

To Charger

Current

Sense

I2C

PACK +

Voltage

Sense

FETs

System

Interface

VCC

DATA

LDO

GPOUT

REGIN

VBAT

SRP

SRN

VSS

REG 25

BIN

bq27410

bq27410-G1

www.ti.com

SLUSAF4 –MARCH 2011

System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection

FEATURES

APPLICATIONS

• Smartphones

• Battery Fuel Gauge for 1-Series LiCoO

battery

Applications

• PDAs

• Easy to Configure Battery Fuel Gauging Based

• Digital Still and Video Cameras

on Patented Impedance Track™ Technology

• Handheld Terminals

– Models Battery Discharge Curve for

• MP3 or Multimedia Players

Accurate State-of-Charge Report

– Automatically Adjusts for Battery Aging,

DESCRIPTION

Battery Self-Discharge, and

The Texas Instruments bq27410 system-side LiCoO

Temperature/Rate Inefficiencies

battery fuel gauge is an easy to configure

microcontroller peripheral that provides fuel gauging

– Low-Value Sense Resistor (5 mΩ or 20 mΩ)

for single-cell LiCoO

battery packs. The device

• Resides on System Main Board

requires minimal user configurations and system

– Works with Embedded or Removable

microcontroller firmware development for accurate

Battery Packs

fuel gauging.

– Integrated LDO allows devices to be

The bq27410 uses the patented Impedance Track™

powered directly from battery pack

algorithm for fuel gauging, and provides information

such as remaining battery capacity (mAh),

• Microcontroller Peripheral Provides:

state-of-charge (%), and battery voltage (mV).

– Accurate Battery Fuel Gauging

Battery fuel gauging with the bq27410 requires only

– Internal Temperature Sensor for Battery

PACK+ (P+), PACK– (P–), for a removable battery

Temperature Reporting

pack or embedded battery circuit. The 12-pin SON

– Configurable Level of State-of-Charge

package with dimensions of 2,5 mm × 4 mm with

(SOC) Interrupts

0.5mm lead pitch is ideal for space constrained

• I

C™ for Connection to System

applications.

Microcontroller Port

• Small 12-pin 2,5 mm × 4 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 data sheet.

2Impedance Track is a trademark of Texas Instruments.

C is a trademark of Phillips Corporation.

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.

Summary of content (31 pages)

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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.
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bq27410-G1 SLUSAF4 – MARCH 2011 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.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com ELECTRICAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) VALUE UNIT –0.3 to 2.75 V Open-drain I/O pins (SDA, SCL, GPOUT) –0.3 to 6 V BAT input pin –0.3 to 6 V –0.3 to VCC + 0.3 V VCC Supply voltage range VIOD VBAT VI Input voltage range to all other pins (BIN, SRP, SRN) ESD Human Body Model (HBM), BAT pin 1.
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bq27410-G1 SLUSAF4 – MARCH 2011 2.5 V LDO www.ti.com (1) TA = –40°C to 85°C, typical values at TA = 25°C, CREG = 0.47µF and VBAT = 3.6 V (unless otherwise noted) PARAMETER VREG25 Regulator output voltage TEST CONDITION MIN NOM MAX 2.7 V ≤ VREGIN ≤ 5.5 V, IOUT ≤ 16 mA 2.4 2.45 V ≤ VREGIN < 2.7 V (low battery), IOUT ≤ 3 mA 2.4 2.5 UNIT 2.6 V 2.7 V, IOUT ≤ 16 mA 280 mV 2.45 V, IOUT ≤ 3 mA 50 V VDO Regulator dropout voltage ΔVREGTEMP Regulator output change with temperature VREGIN = 3.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com LOW FREQUENCY OSCILLATOR TA = –40°C to 85°C, 2.4 V < VCC < 2.6 V; typical values at TA = 25°C and VCC = 2.5 V (unless otherwise noted) PARAMETER fOSC Operating frequency fEIO Frequency error (1) TEST CONDITIONS MIN TYP MAX 32.76 8 (2) kHz TA = 0°C to 60°C –1.5% 0.25% 1.5% TA = –20°C to 70°C –2.5% 0.25% 2.5% TA = –40°C to 85°C –4.0% 0.25% 4.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com 400 kHz 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 = 2.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tr SCL/SDA rise time 300 ns tf SCL/SDA fall time 300 ns tw(H) SCL pulse width (high) 600 ns tw(L) SCL pulse width (low) 1.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com GENERAL DESCRIPTION The bq27410 accurately predicts the battery capacity and other operational characteristics of a single LiCoO2 rechargeable cell. It can be interrogated by a system processor to provide cell information, such as state-of-charge (SOC). Information is accessed through a series of commands, called Standard Commands. Further capabilities are provided by the additional Extended Commands set.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com DATA COMMANDS Standard Data Commands The bq27410 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. 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.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com CONTROL_STATUS: 0x0000 Instructs the fuel gauge to return status information to control addresses 0x00/0x01. The status word includes the following information. Table 3. CONTROL_STATUS Bit Definitions bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 High Byte HIBE FAS SS RSVD CCA RSVD QMAXU RESU Low Byte INITCOMP HIBERNATE FULLSLEEP SLEEP RSVD RUP_DIS VOK RSVD HIBE = Status bit indicating that Hibernate mode has been Entered.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com SET_FULLSLEEP: 0x0010 Instructs the gas gauge to set the CONTROL_STATUS [FULLSLEEP] bit to 1. This allows the gauge to enter the FULLSLEEP power mode after the transition to SLEEP power state is detected. In FULLSLEEP mode less power is consumed by disabling the high frequency oscillator circuit used by the communication engines.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com CHG = (Fast) charging allowed. True when set. OCVTAKEN = Cleared on entry to relax mode and Set to 1 when OCV measurement is performed in relax Battery insertion detected. True when set. When OpConfig[BIE]] is set, [BAT_DET] is set by detecting a logic high to low BAT_DET = transition at BIN pin. when OpConfig[BIE]] is low, [BAT_DET] is set when host issues BAT_INSERT subcommand and clear when host issues BAT_REMOVE subcommand.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com AveragePower( ): 0x18/0x19 This read-only function returns an signed integer value of the average power during battery charging and discharging. It is negative during discharge and positive during charge. A value of 0 indicates that the battery is not being discharged. The value is reported in units of mW.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com Table 5.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com BlockDataControl( ): 0x61 UNSEALED Access: This command is used to control data flash access mode. Writing 0x00 to this command enables BlockData( ) to access general data flash. Writing a 0x01 to this command enables SEALED mode operation of DataFlashBlock( ). SEALED Access: This command is not available in SEALED mode. DeviceNameLength( ): 0x62 UNSEALED and SEALED Access: This byte contains the length of the Device Name.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com ACCESS MODES The bq27410 provides three security modes (FULL ACCESS, UNSEALED, and SEALED) that control data flash access permissions according to Table 6. Public Access refers Data flash to those data flash locations, specified in Table 7, that are accessible to the user. Private Access refers to reserved data flash locations used by the bq27410 system.
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bq27410-G1 SLUSAF4 – MARCH 2011 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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bq27410-G1 www.ti.com SLUSAF4 – MARCH 2011 battery-impedance profile during normal battery usage. It uses this profile, along with SOC and the Qmax value, to determine FullChargeCapacity( ) and StateOfCharge( ), specifically for the present load and temperature. FullChargeCapacity( ) is reported as capacity available from a fully charged battery under the present load and temperature until Voltage( ) reaches the Term Voltage.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com DETAILED PIN DESCRIPTIONS The Operation Configuration Register Two bq27410 pins are configured via the Operation Configuration data flash register, as indicated in Table 8. This register is programmed/read via the methods described in Section Accessing the Data Flash. Table 8.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com Battery Detection (BIN) The host is responsible for battery detection by setting the [BAT_DET] bit to trigger INITIALIZATION mode. The function of OpConfig[BIE] bit is described in Table 10. When battery insertion is detected and INITIALIZATION mode is completed, the bq27410 runs in NORMAL mode to start Impedance Track™ fuel gauging. When battery insertion is not detected, fuel gauging is stopped. Table 10.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com POWER MODES The bq27410 has different power modes: INITIALIZATION, NORMAL, SLEEP, FULLSLEEP and HIBERNATE. Following Power On Reset (POR), the fuel gauge begins INITIALIZATION. In NORMAL mode, the bq27410 is fully powered and can execute any allowable task. In SLEEP mode both low frequency and high frequency oscillators are active. Although the SLEEP has higher current consumption than the FULLSLEEP mode, it is also a reduced power mode.
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bq27410-G1 www.ti.com SLUSAF4 – MARCH 2011 NORMAL Mode The fuel gauge is in NORMAL mode when not in any other power mode. During this mode, AverageCurrent( ), Voltage( ) and Temperature( ) measurements are taken, and the interface data set is updated. Decisions to change states are also made. This mode is exited by activating a different power mode. Because the gauge consumes the most power in NORMAL mode, the Impedance Track™ algorithm minimizes the time the fuel gauge remains in this mode.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com COMMUNICATIONS I2C INTERFACE The bq27410 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 8-bit device address will therefore be 0xAA or 0xAB for write or read, respectively.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.
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bq27410-G1 SLUSAF4 – MARCH 2011 www.ti.com Optional Pull up 1.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 6-Feb-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 BQ27410DRZR-G1 SON DRZ 12 2500 330.0 12.4 2.8 4.3 1.2 4.0 12.0 Q2 BQ27410DRZT-G1 SON DRZ 12 250 330.0 12.4 2.8 4.3 1.2 4.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 6-Feb-2014 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ27410DRZR-G1 SON DRZ 12 2500 338.1 338.1 20.6 BQ27410DRZT-G1 SON DRZ 12 250 338.1 338.1 20.
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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.