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BQ20Z70PWR-V150 Datasheet(PDF) 1 Page - Texas Instruments |
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BQ20Z70PWR-V150 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 17 page www.ti.com FEATURES APPLICATIONS DESCRIPTION bq20z70 SLUS686B – NOVEMBER 2005 – REVISED JULY 2007 SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK™ TECHNOLOGY FOR USE WITH THE bq29330 • 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 Lifetime of the Battery • Instant Accuracy – No Learning Cycle The bq20z70 SBS-compliant gas gauge IC, Required incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system • Supports the Smart Battery Specification SBS installation. The bq20z70 measures and maintains V1.1 an accurate record of available charge in Li-ion or • Powerful 8-Bit RISC CPU With Ultra-Low Li-polymer batteries using its integrated Power Modes high-performance analog peripherals. The bq20z70 monitors capacity change, battery impedance, • Works With the TI bq29330 Analog Front-End open-circuit voltage, and other critical parameters of (AFE) Protection IC to Provide Complete Pack the battery pack, and reports the information to the Electronics Solution system host controller over a serial-communication • Full Array of Programmable Protection bus. It is designed to work with the bq29330 analog Features front-end (AFE) protection IC to maximize – Voltage, Current and Temperature functionality and safety, and minimize component count and cost in smart battery circuits. • Fully Integrated High Accurate Clock • Flexible Configuration for 2 to 4 Series Li-Ion The Impedance Track technology continuously analyzes the battery impedance, resulting in superior and Li-Polymer Cells gas-gauging accuracy. This enables remaining • Integrated Field Programmable FLASH capacity to be calculated with discharge rate, Memory Eliminates the Need for External temperature, and cell aging all accounted for during Configuration Memory each stage of every cycle. • Smart Battery Charger Control Feature AVAILABLE OPTIONS • Two 16-Bit Delta-Sigma Converter PACKAGE(1) – Accurate Voltage and Temperature TA Measurements 20-PIN TSSOP (PW) 20-PIN TSSOP (PW) Tube Tape and Reel – Integrating Coloumb Counter for Charge –40 °C to Flow bq20z70PW(2) bq20z70PWR(3) 85 °C – Better Than 0.65 nVh of Resolution (1) For the most current package and ordering information, see – Self-Calibrating the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. • Supports SHA-1 Authentication (2) A single tube quantity is 50 units. • 20-Pin TSSOP (PW) (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. IMPEDANCE TRACK is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2005–2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Not Recommended For New Designs |
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