BQ2019PW Datasheet, PDF (3/27 Pages) Texas Instruments – ADVANCED BATTERY MONITORIC

bq2019
ADVANCED BATTERY MONITOR IC
SLUS465E – DECEMBER 1999 – REVISED FEBRUARY 2003
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 V_SS.
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 V_CC+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, T_A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20°C to 70°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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
Supply voltage, VCC
Supply current, ICCOP
Sleep current, ISLEEP
Flash programming supply current, ICCPROG
Flash erase supply current, ICCERASE
Operating ambient temperature, TOPR
VCC = 5.5 V, flash programming not active
VCC = 4.3 V, flash programming not active
VCC = 4.3 V, flash programming not active
VCC = 5.5
VCC = 5.5
MIN TYP MAX UNIT
2.8
5.5 V
88 100 µA
80
90 µA
1
µA
16
25 mA
16
25 mA
–20
70 °C
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