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| bq2019 ADVANCED BATTERY MONITOR IC SLUS465 - SEPTEMBER 2000 D D D D D D D D D D D description The bq2019 advanced battery-monitoring IC accurately measures the charge and discharge currents in a rechargeable battery pack. In pack integration, the bq2019 is the basis of a comprehensive battery-capacity management system in portable applications such as cellular phones, PDAs, or other portable products. The bq2019 works with the host controller in the portable system to implement the battery management system. The host controller interprets the bq2019 data and communicates meaningful battery data to the end-user or power-management system. The bq2019 provides 64 bytes of general-purpose FLASH memory, 8 bytes of ID ROM, and 32 bytes of FLASH-backed RAM for data storage. The non-volatile memory can maintain formatted battery-monitor information, identification codes, warranty information, or other critical battery parameters when the battery is temporarily shorted or deeply discharged. AVAILABLE OPTIONS PACKAGE TOPR -20C to 70C 8-Lead TSSOP (PW) bq2019PW 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. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. Copyright (c) 2000, Texas Instruments Incorporated POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 PRODUCT PREVIEW Host Controller Multifunction Monitoring IC Designed to Work with An Intelligent Host Controller - Provides State-of-Charge Information for Rechargeable Batteries - Enhances Charge Termination High-Accuracy Coulometric Charge and Discharge Current Integration With Offset Calibration 32 Bytes of General-Purpose Ram 96 Bytes of Flash (Including 32 Bytes of Shadow Flash) 8 Bytes of ID ROM Internal Temperature Sensor Eliminates the Need for An External Thermistor Multifunction Digital Output Port High-Accuracy Internal Timebase Eliminates External Crystal Oscillator Low Power Consumption - Operating : <80 A - Sleep: <1.5 A Single-Wire HDQ Serial Interface Packaging: 8-Lead TSSOP TSSOP TS PACKAGE (TOP VIEW) REG VCC VSS HDQ 1 2 3 4 8 7 6 5 STAT SR NC OSC bq2019 ADVANCED BATTERY MONITOR IC SLUS465 - SEPTEMBER 2000 functional block diagram VCC HDQ 1.2 V VREF REG + _ Controller Serial Interface STAT ID ROM 3 x 8 RAM Scratch RAM Temperature Sensor 32 x 8 Shadow Flash 32 x 8 RAM PRODUCT PREVIEW SR VFC 2 - 32 x 8 Pages of Flash OSC OSC Charge/Discharge, Counters/Timers, and Temperature Registers VCC 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 bq2019 ADVANCED BATTERY MONITOR IC SLUS465 - SEPTEMBER 2000 Terminal Functions TERMINAL NAME REG VCC VSS HDQ OSC NC SR STAT NO. 1 2 3 4 5 6 7 8 I/O O I I O I/O O I Regulator output Supply voltage Ground Single-wire HDQ interface Time-base adjust for the oscillator Not connected Current-sense input Open-drain status output DESCRIPTION POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 PRODUCT PREVIEW IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. 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 of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof. Copyright (c) 2000, Texas Instruments Incorporated |
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