Datasheet

 
 

SLUS542F − OCTOBER 2003 − REVISED JULY 2009
28
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TYPICAL CHARACTERISTICS
Figure 15
−50
2
0
−25
4
6
8
10
12
14
0 25 50 75 100 12
5
UVLO VOLTAGE THRESHOLDS
vs
JUNCTION TEMPERATURE
V
UVLO
− UVLO Voltage Thresholds − V
T
J
− Junction Temperature − °C
UVLO On
UVLO Off
UVLO Hysteresis
Figure 16
0
0
2
0.5
1.0
1.5
2.0
2.5
468101214
16
QUIESCENT CURRENT
vs
SUPPLY VOLTAGE
I
DD
− Supply Current − mA
V
DD
− Supply Voltage − V
Figure 17
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
0
−50
2
−40
−30
−10
0
10
4 6 8 10 12 14 1
6
−20
JFET Source Current
UCC2891/UCC2893
V
IN
= 36 V
I
DD
− Supply Current − mA
V
DD
− Supply Voltage − V
Figure 18
REFERENCE VOLTAGE
vs
TEMPERATURE
V
REF
− Reference Voltage − V
−50
−40
−30
−10
0
10
−20
−50 −25 0 25 50 75 100 125
T
J
− Junction Temperature − °C
No Load
10 mA Load