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BQ2019 Datasheet(PDF) 3 Page - Texas Instruments

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Part No. BQ2019
Description  ADVANCED BATTERY MONITORIC
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ2019 Datasheet(HTML) 3 Page - Texas Instruments

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bq2019
ADVANCED BATTERY MONITOR IC
SLUS465E – DECEMBER 1999 – REVISED FEBRUARY 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description
REG (Regulator output)
REG is the output of the operational amplifier that drives an external pass N-channel JFET to provide an optional
regulated supply. The supply is regulated at 4.75 V nominal.
HDQ (Data input/output)
HDQ is a single-wire serial communications interface port. This bidirectional input/output communicates the
register information to the host.
STAT (Status Output)
STAT is a general-purpose output port; its state is controlled via the HDQ serial communications interface.
SR (Current sense inputs)
The bq2019 interprets charge and discharge activity by monitoring and integrating the voltage between SR
and VSS.
OSC (Time Base Adjust for the Oscillator)
OSC is a programmable current source that adjusts the internal time base by an external resistor.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage (VCC with respect to GND)
–0.3 to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, SR (all with respect to GND)
–0.3 V to VCC+0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current (STAT pin)
5 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current (REG pin)
400 nA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current (HDQ pin)
5 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA
–20
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature (soldering, 10 s)
300
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
MIN
TYP
MAX
UNIT
Supply voltage, VCC
2.8
5.5
V
S ppl c rrent I
VCC = 5.5 V, flash programming not active
88
100
µA
Supply current, ICCOP
VCC = 4.3 V, flash programming not active
80
90
µA
Sleep current, ISLEEP
VCC = 4.3 V, flash programming not active
1
µA
Flash programming supply current, ICCPROG
VCC = 5.5
16
25
mA
Flash erase supply current, ICCERASE
VCC = 5.5
16
25
mA
Operating ambient temperature, TOPR
–20
70
°C


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