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0.001 0.01 0.1 1 10
200
0
100
300
400
f
SW
− Switching Frequency − kHz
I
OUT
− Output Current − A
CH1 Auto−skip
CH2−PWM Only
CH2 Auto−skip
CH1−PWM Only
TONSEL = 5 V
0.001 0.01 0.1 1 10
200
0
100
300
400
f
SW
− Switching Frequency − kHz
I
OUT
− Output Current − A
CH1 Auto−skip
CH2−PWM Only
CH2 Auto−skip
CH1−PWM Only
TONSEL = FLOAT
0
80
50
140
90
100
150
130
70
60
120
−50 0 50 100
V
OVP
, V
UVP
− OVP/UVP Threshold − %
OVP
UVP
T
J
− Junction Temperature − °C
0 20 60 80 100
5.000
4.950
5.050
5.100
40
V
REG5
− VREG5 Output Voltage − V
I
VREG5
− VREG5 Output Current − mA
TPS51120
SLUS670B – JULY 2005 – REVISED FEBRUARY 2007
TYPICAL CHARACTERISTICS (continued)
SWITCHING FREQUENCY SWITCHING FREQUENCY
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 19. Figure 20.
OVP/UVP THRESHOLD VOLTAGE VREG5 OUTPUT VOLTAGE
vs vs
JUNCTION TEMPERATURE OUTPUT CURRENT
Figure 21. Figure 22.
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