Datasheet

0
–40 20–25 35–10 505 65 95 110 12580
T
J
– Junction Temperature – °C
0.2
0.4
1.2
0.6
1.4
0.8
1.0
f
SW
= 600 kHz
f
SW
= 1.2 MHz
f
SW
= 300 kHz
f
SW
– Switching Frequency – MHz
2
0
–40 20–25 35–10 505 65 95 110 12580
T
J
– Junction Temperature – °C
3
1
5
6
4
t
SS
– Soft-Start Time – ms
f
SW
= 300 kHz
f
SW
= 600 kHz
f
SW
= 1.2 MHz
2.00
–40 20–25 35–10 505 65 95 110 12580
T
J
– Junction Temperature – °C
2.25
2.75
4.25
3.25
4.50
3.75
Channel1
Channel2
I
ILIMx
– Current Limit – A
2.50
3.00
3.50
4.00
–40
792
788
20–25 35–10 505 65 95 110 12580
800
796
808
804
V
FB
– Feedback Voltage – mV
T
J
– Junction Temperature – °C
790
798
794
806
802
TPS54290, TPS54291, TPS54292
SLUS973 –OCTOBER 2009 www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
SOFT START TIME OSCILLATOR FREQUENCY
vs vs
TEMPERATURE TEMPERATURE
Figure 5. Figure 6.
FEEDBACK VOLTAGE CURRENT LIMIT
vs vs
TEMPERATURE TEMPERATURE
Figure 7. Figure 8.
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