LTC1731-8.2/LTC1731-8.4
TYPICAL PERFOR A CE CHARACTERISTICS
Trickle Charge Threshold Voltage
vs Temperature
4.94
V
CC
= 9V
110
4.93
t
TIMER
(%)
4.92
t
TIMER
(%)
V
TRKL
(V)
4.91
4.90
–50 –25
0
25
50
75
TEMPERATURE (°C)
1731 G03
Battery Charge Current
vs V
CC
520
R
PROG
= 19.6K
R
SENSE
= 0.2Ω
V
BAT
= 6V
T
A
= 25°
540
530
520
510
500
V
PROG
(V)
I
BAT
(mA)
I
BAT
(mA)
490
480
9
10
V
CC
(V)
11
V
PROG
(V)
4
U W
100
Timer Accuracy vs V
CC
C
TIMER
= 0.1µF
V
BAT
= 6V
T
A
= 25°
110
Timer Accuracy vs Temperature
C
TIMER
= 0.1µF
V
CC
= 9V
105
105
100
100
95
95
125
90
9
10
V
CC
(V)
11
12
1731 G05
90
–50 –25
0
25
50
75
100
125
TEMPERATURE (°C)
1731 G04
Battery Charge Current
vs Temperature
R
PROG
= 19.6K
R
SENSE
= 0.2Ω
V
BAT
= 6V
V
CC
= 9V
Program Pin Voltage
vs V
CC
2.48
R
PROG
= 19.6K
V
BAT
= 6V
T
A
= 25°
2.47
510
500
490
480
470
2.46
2.45
12
1731 G09
460
–50 –25
2.44
0
25
50
75
100
125
TEMPERATURE (°C)
1731 G07
9
10
V
CC
(V)
11
12
1731 G10
Program Pin Voltage
vs Temperature
2.470
R
PROG
= 19.6k
V
CC
= 9V
2.465
2.460
2.455
2.450
–50 –25
0
25
50
75
100
125
TEMPERATURE (°C)
1731 G02
sn1731 17318fs
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