Datasheet

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bq20z65-R1

www.ti.com

SLUS990 –DECEMBER 2009

SBS 1.1-COMPLIANT GAS GAUGE AND PROTECTION

ENABLED WITH IMPEDANCE TRACK™

Check for Samples: bq20z65-R1

FEATURES

APPLICATIONS

• Notebook PCs

• Next Generation Patented Impedance Track™

Technology Accurately Measures Available

• Medical and Test Equipment

Charge in Li-Ion and Li-Polymer Batteries

• Portable Instrumentation

– Better Than 1% Error Over the Lifetime of

DESCRIPTION

the Battery

• Supports the Smart Battery Specification

The bq20z65-R1 SBS-compliant gas gauge and

SBS V1.1

protection IC, incorporating patented Impedance

Track™ technology, is a single IC solution designed

• Flexible Configuration for 2 to 4 Series Li-Ion

for battery-pack or in-system installation. The

and Li-Polymer Cells

bq20z65-R1 measures and maintains an accurate

• Powerful 8-Bit RISC CPU With Ultralow Power

record of available charge in Li-ion or Li-polymer

Modes

batteries using its integrated high-performance

analog peripherals. The bq20z65-R1 monitors

• Full Array of Programmable Protection

capacity change, battery impedance, open-circuit

Features

voltage, and other critical parameters of the battery

– Voltage, Current, and Temperature

pack which reports the information to the system host

• Satisfies JEITA Guidelines

controller over a serial-communication bus. Together

with the integrated analog front-end (AFE)

• Added Flexibility to Handle More Complex

short-circuit and overload protection, the bq20z65-R1

Charging Profiles

maximizes functionality and safety while minimizing

• Lifetime Data Logging

external component count, cost, and size in smart

• Drives 3, 4, and 5 Segment LED Display for

battery circuits.

Battery-Pack Conditions

The implemented Impedance Track™ gas gauging

• Supports SHA-1 Authentication

technology continuously analyzes the battery

• Complete Battery Protection and Gas Gauge

impedance, resulting in superior gas-gauging

Solution in One Package accuracy. This enables remaining capacity to be

calculated with discharge rate, temperature, and cell

• Available in a 44-Pin TSSOP (DBT) package

aging all accounted for during each stage of every

cycle with high accuracy.

Table 1. AVAILABLE OPTIONS

PACKAGE

(1)

44-PIN TSSOP (DBT) Tube 44-PIN TSSOP (DBT) Tape and Reel

–40°C to 85°C bq20z65-R1DBT

(2)

bq20z65-R1DBTR

(3)

(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) A single tube quantity is 40 units.

(3) A single reel quantity is 2000 units

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.

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 (25 pages)

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bq20z65-R1 www.ti.com SLUS990 – DECEMBER 2009 SBS 1.1-COMPLIANT GAS GAUGE AND PROTECTION ENABLED WITH IMPEDANCE TRACK™ Check for Samples: bq20z65-R1 FEATURES APPLICATIONS • • • • 1 2 • • • • • • • • • • • Next Generation Patented Impedance Track™ Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries – Better Than 1% Error Over the Lifetime of the Battery Supports the Smart Battery Specification SBS V1.
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bq20z65-R1 SLUS990 – DECEMBER 2009 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
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bq20z65-R1 www.ti.
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bq20z65-R1 SLUS990 – DECEMBER 2009 www.ti.com TERMINAL FUNCTIONS TERMINAL (1) 4 I/O (1) DESCRIPTION NO. NAME 1 DSG O 2 PACK IA, P 3 VCC P Positive device supply input. Connect to the center connection of the CHG FET and DSG FET to ensure device supply either from battery stack or battery pack input 4 ZVCHG O P-chan pre-charge FET gate drive 5 GPOD OD 6 PMS I Pre-charge mode setting input. Connect to PACK to enable 0v pre-charge using charge FET connected at CHG pin.
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bq20z65-R1 www.ti.com SLUS990 – DECEMBER 2009 TERMINAL FUNCTIONS (continued) TERMINAL I/O (1) DESCRIPTION NO. NAME 38 VC5 IA, P Cell votage sense input and cell balancing input for the negative voltage of the bottom cell in cell stack. 39 VC4 IA, P Cell votage sense input and cell balancing input for the positive voltage of the bottom cell and the negative voltage of the second lowest cell in cell stack.
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bq20z65-R1 SLUS990 – DECEMBER 2009 www.ti.com RECOMMENDED OPERATING CONDITIONS (continued) Over operating free-air temperature range (unless otherwise noted) PIN VIN Input voltage range MIN NOM MAX UNIT VC(n)-VC(n+1); n = 1,2,3,4 0 5 V VC1, VC2, VC3, VC4 0 VSS V VC5 0 0.5 V –0.5 0.5 V V ASRN, ASRP PACK, PMS 0 25 V(GPOD) Output voltage range GPOD 0 25 V I(GPOD) Drain current (1) GPOD 1 mA C(REG25) 2.5V LDO capacitor REG25 1 µF C(REG33) 3.3V LDO capacitor REG33 2.
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bq20z65-R1 www.ti.com SLUS990 – DECEMBER 2009 ELECTRICAL CHARACTERISTICS Over operating free-air temperature range (unless otherwise noted), TA = –40°C to 85°C, V(REG25) = 2.41 V to 2.59 V, V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.
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bq20z65-R1 SLUS990 – DECEMBER 2009 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over operating free-air temperature range (unless otherwise noted), TA = –40°C to 85°C, V(REG25) = 2.41 V to 2.59 V, V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.
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bq20z65-R1 www.ti.com SLUS990 – DECEMBER 2009 ELECTRICAL CHARACTERISTICS (continued) Over operating free-air temperature range (unless otherwise noted), TA = –40°C to 85°C, V(REG25) = 2.41 V to 2.59 V, V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.2 µF; typical values at TA = 25°C (unless otherwise noted) PARAMETER tf TEST CONDITIONS Fall time V(ZVCHG) CL= 4700pF ZVCHG clamp voltage TYP MAX V(CHG): V(PACK) + V(CHGON) ≥ V(PACK)+ 1V MIN 40 200 V(DSG): VC1 + V(DSGON) ≥ VC1 + 1 V 40 200 3.5 3.
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bq20z65-R1 SLUS990 – DECEMBER 2009 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over operating free-air temperature range (unless otherwise noted), TA = –40°C to 85°C, V(REG25) = 2.41 V to 2.59 V, V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.2 µF; typical values at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS Effective input resistance (10) TA = 25°C to 85°C MIN TYP MAX UNIT 2.5 MΩ INTERNAL TEMPERATURE SENSOR V(TEMP) Temperature sensor voltage (11) -2.
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bq20z65-R1 www.ti.com SLUS990 – DECEMBER 2009 POWER-ON RESET Over operating free-air temperature range (unless otherwise noted), TA = –40°C to 85°C, V(REG25) = 2.41 V to 2.59 V, V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.2 µF; typical values at TA = 25°C (unless otherwise noted) PARAMETER VIT- Negative-going voltage input VHYS Power-on reset hysteresis tRST RESET active low time TEST CONDITIONS MIN active low time after power up or watchdog reset TYP MAX UNIT 1.7 1.8 1.
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bq20z65-R1 SLUS990 – DECEMBER 2009 www.ti.com SMBus TIMING CHARACTERISTICS (continued) TA = –40°C to 85°C Typical Values at TA = 25°C and VREG25 = 2.
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bq20z65-R1 www.ti.com SLUS990 – DECEMBER 2009 tR tSU(STO) tF tF tHD(STA) tBUF tHIGH SMBC SMBC SMBD SMBD P tR S tLOW tHD(DAT) Start and Stop condition tSU(DAT) Wait and Hold condition tSU(STA) tTIMEOUT SMBC SMBC SMBD SMBD S Timeout condition A. Repeated Start condition SCLKACK is the acknowledge-related clock pulse generated by the master. Figure 1.
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bq20z65-R1 SLUS990 – DECEMBER 2009 www.ti.com FEATURE SET Primary (1st Level) Safety Features The bq20z65-R1 supports a wide range of battery and system protection features that can easily be configured.
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bq20z65-R1 www.ti.com SLUS990 – DECEMBER 2009 Lifetime Data Logging Features The bq20z65-R1 offers lifetime data logging, where important measurements are stored for warranty and analysis purposes.
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bq20z65-R1 SLUS990 – DECEMBER 2009 www.ti.com CONFIGURATION Oscillator Function The bq20z65-R1 fully integrates the system oscillators therefore, no external components are required for this feature. System Present Operation The bq20z65-R1 periodically verifies the PRES pin and detects that the battery is present in the system via a low state on a PRES input. When this occurs, the bq20z65-R1 enters normal operating mode.
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bq20z65-R1 www.ti.com SLUS990 – DECEMBER 2009 COMMUNICATIONS The bq20z65-R1 uses SMBus v1.1 with Master Mode and package error checking (PEC) options per the SBS specification. SMBus On and Off State The bq20z65-R1 detects an SMBus off state when SMBC and SMBD are logic-low for ≥ 2 seconds. Clearing this state requires either SMBC or SMBD to transition high. Within 1 ms, the communication bus is available. SBS Commands Table 3.
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bq20z65-R1 SLUS990 – DECEMBER 2009 www.ti.com Table 3.
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bq20z65-R1 www.ti.com SLUS990 – DECEMBER 2009 Table 4.
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bq20z65-R1 SLUS990 – DECEMBER 2009 www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 4-Jan-2010 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty BQ20Z65DBT-R1 ACTIVE TSSOP DBT 44 BQ20Z65DBTR-R1 ACTIVE TSSOP DBT 44 40 Lead/Ball Finish MSL Peak Temp (3) Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device BQ20Z65DBTR-R1 Package Package Pins Type Drawing TSSOP DBT 44 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 24.4 Pack Materials-Page 1 6.8 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 11.7 1.6 12.0 24.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ20Z65DBTR-R1 TSSOP DBT 44 2000 367.0 367.0 45.
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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 JESD46C and to discontinue any product or service per JESD48B. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.