Datasheet

 
 

SLUS542F − OCTOBER 2003 − REVISED JULY 2009
29
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TYPICAL CHARACTERISTICS
Figure 19
LINE UV/OV VOLTAGE THRESHOLD
vs
JUNCTION TEMPERATURE
V
TH
− Line Thresholds − V
T
J
− Junction Temperature − °C
1.20
1.22
1.24
1.26
1.28
1.30
−50 −25 0 25 50 75 100 125
Figure 20
SOFTSTART CURRENTS
vs
TEMPERATURE
I
SS(DIS)
/I
SS(CHG)
− Softstart Currents − µA
−50 −25 0 25 50 75 100 125
−20
−15
−10
5
15
20
0
−5
10
T
J
− Junction Temperature − °C
Softstart Discharge Current
Softstart Charge Current
Figure 21
SOFTSTART/SHUTDOWN THRESHOLD VOLTAGE
vs
JUNCTION TEMPERATURE
V
TH
− Softstart/Shutdown Threshold Voltage − V
−50
0.42
0.40
−25 0 25 50 75 100 125
0.46
0.44
0.50
0.48
0.54
0.52
0.58
0.56
0.60
T
J
− Junction Temperature − °C
10
1 K
10 K
100 K
10 M
100 1000
1 M
Figure 22
SWITCHING FREQUENCY
vs
PROGRAMMING RESISTANCE
f
SW
− Switching Frequency − Hz
R
ON
= R
OFF
− Timing Resistance − kΩ