C0098C0113C0050C0054C0050C0050C0049


SLUS607 − MAY 2004
C0072C0073C0071C0072C0262C0080C0069C0082C0070C0079C0082C0077C0065C0078C0067C0069 C0066C0065C0084C0084C0069C0082C0089 C0077C0079C0078C0073C0084C0079C0082 C0073C0067
C0087C0073C0084C0072 C0067C0079C0085C0076C0079C0077C0066 C0067C0079C0085C0078C0084C0069C0082C0044 C0086C0079C0076C0084C0065C0071C0069 C0065C0078C0068C0044 C0084C0069C0077C0080C0069C0082C0065C0084C0085C0082C0069 C0077C0069C0065C0083C0085C0082C0069C0077C0069C0078C0084
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FEATURES
C0068 Communicates Directly With the Integrated
HDQ Engine in TI OMAP Processor
C0068 Multifunction Monitoring Integrated Circuit
Designed to Work With an Intelligent Host
Controller :
− Provides State of Charge Information for
Rechargeable Batteries
− Provides Accurate Battery Voltage and
Temperature Measurement
C0068 High Accuracy Coulometric Charge and
Discharge Current Integration With
Automatic Offset Compensation
C0068 11-Bit Analog-to-Digital Converter Reports
Battery Voltage With Gain and Offset
Correction
C0068 Differential Current Sense
C0068 32 Bytes of General Purpose RAM
C0068 96 Bytes of Flash (Including 32 Bytes of
Shadow Flash)
C0068 8 Bytes of ID ROM
C0068 Internal Temperature Sensor Eliminates the
Need for an External Thermistor
C0068 Programmable Digital Input/Output Port
C0068 High-Accuracy Internal Timebase Eliminates
External Crystal Oscillator
C0068 Low Power Consumption:
− Operating : 30 µA
− Sleep: 1 µA
− Hibernate: 600 nA
C0068 Single-Wire HDQ Serial Interface
C0068 Packaging: 8-LEAD TSSOP

DESCRIPTION
The bq26221 is an advanced battery monitoring
device designed to accurately measure the
charge and discharge currents in rechargeable
battery packs. Intended for pack integration, the
bq26221 contains all the necessary functions to
form the basis of a comprehensive battery
capacity management system in portable
applications such as cellular phones, PDAs, or
other portable products.
The bq26221 works with the host controller in the
portable system to implement the battery
management system. The host controller is
responsible for interpreting the bq26221 data and
communicating meaningful battery data to the
end-user or power management system.
This device provides 64 bytes of general-purpose
flash memory, 8 bytes of ID ROM and 32 bytes of
flash-backed RAM for data storage. The
nonvolatile 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.
C0080C0082C0079C0068C0085C0067C0084C0073C0079C0078 C0068C0065C0084C0065 C0105C0110C0102C0111C0114C0109C0097C0116C0105C0111C0110 C0105C0115 C0099C0117C0114C0114C0101C0110C0116 C0097C0115 C0111C0102 C0112C0117C0098C0108C0105C0099C0097C0116C0105C0111C0110 C0100C0097C0116C0101C0046
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C0115C0116C0097C0110C0100C0097C0114C0100 C0119C0097C0114C0114C0097C0110C0116C0121C0046 C0080C0114C0111C0100C0117C0099C0116C0105C0111C0110 C0112C0114C0111C0099C0101C0115C0115C0105C0110C0103 C0100C0111C0101C0115 C0110C0111C0116 C0110C0101C0099C0101C0115C0115C0097C0114C0105C0108C0121 C0105C0110C0099C0108C0117C0100C0101
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Copyright  2004, Texas Instruments Incorporated
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.
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RBI
VCC
VSS
HDQ
GPIO
SRP
SRN
BAT
PW PACKAGE
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