LTC1644
6
1644f
TYPICAL PERFOR A CE CHARACTERISTICS
W
12V Foldback Current Limit
vs Temperature
V
EE
Foldback Current Limit
vs Temperature
12V
OUT
PWRGD Threshold
Voltage vs Temperature
V
EEOUT
PWRGD Threshold Voltage
vs Temperature
5V
OUT
PWRGD Threshold Voltage
vs Temperature
3V
OUT
PWRGD Threshold Voltage
vs Temperature
3V Only Window Voltage
vs Temperature
No V
EEIN
Threshold Voltage vs
Temperature
5V
SENSE
Input Current vs
Temperature
TEMPERATURE (癈)
50
0
0.10
0.30
0.40
0.50
50
1.00
0.90
1644 G19
0.20
0
25
75
25
100
0.60
0.70
0.80
12V
OUT
= 10V
12V
OUT
= 0V
TEMPERATURE (癈)
50
0
0.05
0.15
0.20
0.25
50
0.45
1644 G20
0.10
0
25
75
25
100
0.30
0.35
0.40
V
EEOUT
= 10V
V
EEOUT
= 0V
TEMPERATURE (癈)
60
11.05
11.06
11.07
11.09
11.10
11.08
40 20 0 20
1644 G21
40
100
11.11
60 80
TEMPERATURE (癈)
50
25
75
1644 G22
25
0
50
10.46
10.47
10.48
10.49
10.50
10.51
10.52
10.53
10.54
100
TEMPERATURE (癈)
50
4.610
25
0
25
50
1644 G23
75 100
4.618
4.616
4.614
4.612
4.620
4.622
TEMPERATURE (癈)
50
25
0
25
50
75 100
2.905
2.903
2.901
2.899
2.897
2.895
TEMPERATURE (癈)
50
0.09
0.10
0.11
25
75
1644 G25
0.08
0.07
0.06
25
0
50
0.12
0.13
0.14
100
5V
IN
3V
IN
3V
IN
5V
IN
TEMPERATURE (癈)
50
4.20
4.30
4.40
4.50
4.60
4.70
4.80
4.90
25
75
1644 G26
25
0
50
100
TEMPERATURE (癈)
50
60
50
40
30
20
10
0
25
75
25
0
50
100
5V
OUT
= 0V
5V
OUT
= 3V