BQ2031PN-A5 Datasheet, PDF (13/19 Pages) Texas Instruments – Lead-Acid Fast-Charge IC

bq2031
Impedance
Symbol
Parameter
Minimum
RBATZ BAT pin input impedance
50
RSNSZ SNS pin input impedance
50
RTSZ
TS pin input impedance
50
RPROG1
Soft-programmed pull-up or pull-down
resistor value (for programming)
-
RPROG2 Pull-up or pull-down resistor value
-
RMTO
Charge timer resistor
20
Typical Maximum
-
-
-
-
-
-
-
10
-
3
-
480
Unit
MΩ
MΩ
MΩ
kΩ
kΩ
kΩ
Notes
DSEL, TSEL, and
QSEL
IGSEL
Timing (TA = TOPR; VCC = 5V ±10%)
Symbol
Parameter
Minimum Typical Maximum
tMTO
tQT1
tQT2
tDV
tH01
tH02
FPWM
Charge time-out range
Pre-charge qual test 1 time-out period
Pre-charge qual test 2 time-out period
∆²V termination sample frequency
Pre-charge qual test 2 hold-off period
Bulk charge hold-off period
PWM regulator frequency range
1
-
24
-
0.02tMTO
-
-
0.16tMTO
-
-
0.008tMTO
-
-
0.002tMTO
-
-
0.015tMTO
-
-
100
Unit
hours
-
-
-
-
-
kHz
Notes
See Figure 9
See Equation 9
Capacitance
Symbol
Parameter
Minimum
Typical
Maximum
Unit
CMTO
CPWM
Charge timer capacitor
PWM R-C capacitance
-
0.1
0.1
µF
-
0.001
-
µF
13