BQ2023 Datasheet, PDF (4/27 Pages) Texas Instruments – SINGLE-WIRE ADVANCED BATTERY MONITOR IC FOR CELLULAR AND PDA APPLICATIONS

bq2023
SINGLEĆWIRE ADVANCED BATTERY MONITOR IC
FOR CELLULAR AND PDA APPLICATIONS
SLUS480B – MAY 2001
electrical characteristics over recommended operating free-air temperature range and supply
voltage (unless otherwise noted)
dc
PARAMETER
TEST CONDITIONS
VOL
IOL
VIL
VIH
VIH(PDETH)
RSR
Digital output low SDQ and STAT pin
Digital output low sink current on SDQ pin
Digital input low SDQ pin
Digital input high SDQ pin
Digital input high PDET pin
SR input impedance
IOL = 1 mA
0.1 V < (VSRP,VSRN) < VCC
MIN
1.7
VCC–0.1
10
TYP
MAX
0.4
1
0.7
VCC+0.3
ac
PARAMETER
TEST CONDITIONS
MIN TYP MAX
td(POR) Power on reset delay
Delay required to attempt communication after VCC > 2.4 V
500
td(PDET) PDET delay
Sleep delay time after PDET transitions from high to low
1
(and all sleep conditions have been met)
td(SDQ) SDQ wake-up delay
Wakeup delay after SDQ activity detected (see Note 5)
300
NOTE 5: Assured by design. Not production tested.
UNIT
V
mA
V
V
V
MΩ
UNIT
ms
ms
µs
timer characteristics over recommended operating temperature and supply voltage (unless
otherwise noted)
E(TMR)
PARAMETER
Timer accuracy error
TEST CONDITIONS
MIN
–4%
TYP MAX UNIT
4%
characteristics over recommended operating temperature and supply voltage (unless
otherwise noted)
T(RES)
E(T)
PARAMETER
Reported temperature resolution
Reported temperature accuracy
TEST CONDITIONS
MIN TYP MAX UNIT
0.25
°K
–4
4 °K
VFC characteristics over recommended operating temperature and supply voltage (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VI(SR)
G(VFC)
G(VCC)
Input voltage: VSRP–VSRN
Charge/discharge gain
Supply voltage gain
coefficient
TA = 22°C, VCC = 3.6 V, See Note 6
TA = 22°C, See Note 6
G(TCO)
Temperature gain
coefficient
INL
Integral nonlinearity
Slope for TA = –20°C to 70°C, See Note 6
Total deviation for TA = –20°C to 70°C, See Note 6
Slope for TA = 0°C to 50°C, See Note 6
Total deviation for TA = 0°C to 50°C, See Note 6
See Note 6
V(COS)
Auto compensated offset
See Note 6
0°C < TA < 50°C, 2.4 V < VCC < 4.2 V, See Note 6
NOTE 6: –100 mV < (V(SRP) – V(SRN)) < 100 mV
MIN
–100
91.1
TYP MAX UNIT
100 mV
94.1 97.1 Hz/V
–0.54 –1.25 %/V
–0.05
–1.5%
–0.04
–0.58%
–0.1% 0.04%
–15.8
–12.1
0.06
–2.2%
0.05
–1.2%
0.2%
11.4
7.2
%/°C
%/°C
µV
µV
4
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