C0098C0113C0050C0048C0049C0057
C0065C0068C0086C0065C0078C0067C0069C0068 C0066C0065C0084C0084C0069C0082C0089 C0077C0079C0078C0073C0084C0079C0082 C0073C0067
SLUS465E – DECEMBER 1999 – REVISED FEBRUARY 2003
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 Multifunction Monitoring IC Designed to
Work With an Intelligent Host Controller
– Provides State-of-Charge Information for
Rechargeable Batteries
– Enhances Charge Termination
C0068 Ideal for Single-Cell Li-Ion or 3-Cell NiMH
Applications
C0068 High-Accuracy Coulometric Charge and
Discharge Current Integration With Offset
Calibration
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 Multifunction Digital Output Port
C0068 High-Accuracy Internal Timebase
Eliminates External Crystal Oscillator
C0068 Low Power Consumption
– Operating: <80 µA
– Sleep: <1.5 µA
C0068 Single-Wire HDQ Serial Interface
C0068 Packaging: 8-Lead TSSOP

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 nonvolatile 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
PACKAGED DEVICE
T
A MARKING
8-LEAD TSSOP
(PW)
–20°C to 70°C bq219 bq2019PW
Copyright  2003, Texas Instruments Incorporated
C0080C0082C0079C0068C0085C0067C0084C0073C0079C0078 C0068C0065C0084C0065 C0105C0110C0102C0111C0114C0109C0097C0116C0105C0111C0110 C0105C0115 C0099C0117C0114C0114C0101C0110C0116 C0097C0115 C0111C0102 C0112C0117C0098C0108C0105C0099C0097C0116C0105C0111C0110 C0100C0097C0116C0101C0046
C0080C0114C0111C0100C0117C0099C0116C0115 C0099C0111C0110C0102C0111C0114C0109 C0116C0111 C0115C0112C0101C0099C0105C0102C0105C0099C0097C0116C0105C0111C0110C0115 C0112C0101C0114 C0116C0104C0101 C0116C0101C0114C0109C0115 C0111C0102 C0084C0101C0120C0097C0115 C0073C0110C0115C0116C0114C0117C0109C0101C0110C0116C0115
C0115C0116C0097C0110C0100C0097C0114C0100 C0119C0097C0114C0114C0097C0110C0116C0121C0046 C0080C0114C0111C0100C0117C0099C0116C0105C0111C0110 C0112C0114C0111C0099C0101C0115C0115C0105C0110C0103 C0100C0111C0101C0115 C0110C0111C0116 C0110C0101C0099C0101C0115C0115C0097C0114C0105C0108C0121 C0105C0110C0099C0108C0117C0100C0101
C0116C0101C0115C0116C0105C0110C0103 C0111C0102 C0097C0108C0108 C0112C0097C0114C0097C0109C0101C0116C0101C0114C0115C0046
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.
1
2
3
4
8
7
6
5
REG
V
CC
V
SS
HDQ
STAT
SR
DC
OSC
PW PACKAGE
(TOP VIEW)
DC – Internal connection only. Do not connect