BQ26200 Datasheet | Texas Instruments

SLUS509A - DECEMBER 2001 - REVISED NOVEMBER 2004 HIGHĆPERFORMANCE BATTERY MONITOR WITH COLOUMB COUNTER AND FLASH MEMORY Features D Multifunction Monitoring Device Designed to Work With an Intelligent Host Controller - Provides State of Charge Information for Rechargeable Batteries - Enhances Charge Termination D High Accuracy Coulometric Charge and Discharge Current Integration With Automatic Offset pensation D Differential Current Sense D 32 Bytes of General-Purpose RAM D 96 Bytes of Flash (Including 32 Bytes of Shadow Flash) D 8 Bytes of ID ROM D Internal Temperature Sensor Eliminates Need for External Thermistor D Multifunction Digital Output Port D High-Accuracy Internal Timebase Eliminates External Crystal Oscillator D Low Power Consumption - Operating : <95 µA - Sleep: <2 µA D Single-Wire HDQ Serial Interface D 8-Lead TSSOP Package DESCRIPTION The bq26200 is an advanced battery monitoring IC designed to accurately measure the charge and discharge currents in rechargeable battery packs. Intended for pack integration, the bq26200 contains all the necessary functions to form the basis of a prehensive battery capacity management system in portable applications such as cellular phones, PDA’s, or other portable products. The bq26200 works with the host controller in the portable system to implement the battery management system. The host controller is responsible for interpreting the bq26200 data and municating meaningful battery data to the end-user or power management system. The bq26200 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 during periods when the battery is temporarily shorted or deeply discharged. REG VCC VSS HDQ PW PACKAGE (TOP VIEW) STAT SRP SRN OSC - 20°C to...