Datasheet

15
bq2031
Change No. Page No. Description Nature of Change
1 Descriptions Clarified and consolidated
1 Renamed
Dual-Level Constant Current Mode to Two-Step Current Mode
V
MCV
to V
HCO
V
INT
to V
LCO
t
UV1
to t
QT1
t
UV2
to t
QT2
1 Consolidation Tables 1 and 2
1 Added figures
Start-up states
Temperature sense input voltage thresholds
Pulsed maintenance current implementation
1 Updated figures Figures 1 through 6
1 Added equations Thermistor divider network configuration equations
1 Raised condition MOD V
OL
and V
OH
parameters from
≤
5mA to
≤
10
µ
A
1 Corrected Conditions VSNS rating from V
MAX
and V
MIN
to I
MAX
and I
MIN
1 Added table Capacitance table for C
MTO
and C
PWM
26
Changed values in
Figure 5
Was 51K; is now 10K
3 7, 10
Changed values
in Equations 3 and 8
Was: I
MAX
= 0.275V/R
SNS
; is now I
MAX
= 0.250V/R
SNS
38
Changed values
in Equation 4
Was: (V
CC
- 0.275); is now (V
CC
- 0.250V)
311
Changed rating value
for V
SNS
in DC
Thresholds table
Was 0.275; is now 0.250
411T
OPR
Deleted industrial temperature range.
Notes: Change 1 = Dec. 1995 B changes from June 1995 A.
Change 2 = Sept. 1996 C changes from Dec. 1995 B.
Change 3 = April 1997 D changes from Sept. 1996 C.
Change 4 = June 1999 E changes from April 1997 D.
Data Sheet Revision History
bq2031
Package Option:
PN = 16-pin plastic DIP
SN = 16-pin narrow SOIC
Device:
bq2031 Lead Acid Charge IC
Ordering Information