Datasheet

UCC28050, UCC28051
UCC38050, UCC38051
SLUS515F−SEPTEMBER 2002 − REVISED MARCH 2009
18
www.ti.com
TYPICAL CHARACTERISTICS
Figure 6
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
I
CC
− Supply Current − mA
V
CC
− Supply Voltage − V
2.5
3.0
3.5
2.0
4.0
0
0.5
1.0
1.5
200128416
UCC38051
UCC38050
SUPPLY CURRENT
vs
TEMPERATURE
T
J
− Temperature − °C
Figure 7
4
5
3
0
1
2
125−50 50250 100
−25 75
I
CC
− Supply Current − mA
I
CC
= ON
75 kHZ, 1 nF
I
CC
= ON
75 kHZ, No Load
I
CC
= ON
No Switching
6
14
16
10
4
6
2
8
12
18
0
125−50 50250 100−25 75
20
Figure 8
UVLO THRESHOLDS
vs
TEMPERATURE
V
UVLO
− UVLO Threshold VOltage − V
T
J
− Temperature − °C
UVLO ON
(UCCx8050)
UVLO OFF
UVLO HYSTERESIS (UCCx8050)
UVLO ON
(UCCx8051)
UVLO HYSTERESIS (UCCx8051)
REFERENCE VOLTAGE
vs
TEMPERATURE
V
REF
− Reference Voltage − V
T
J
− Temperature − °C
Figure 9
2.54
2.56
2.50
2.60
2.44
2.46
2.42
2.48
2.52
2.58
2.40
12
5
−50 50250 100−25 75