Datasheet

-45 135
T
J
- Temperature - °C
2.60
2.70
2.85
45
I
DD
- Operating Supply Current - mA
2.75
2.65
15-15 75 105
2.80
F
SW
= 200 kHz
-45 135
T
J
- Temperature - °C
26.8
27.1
27.4
45
I
SS
- Soft-Start Current - mA
27.2
26.9
15-15 75 105
27.3
27.0
-45 135
T
J
- Temperature - °C
1.5
2.0
3.0
5.0
45
V
HICC_PU
/ V
CS(max)
- RAMP/CS Clamp Voltage and Hiccup
Pull-Up Threshold - V
4.5
15-15 75 105
3.5
V
HICC_PU
V
CS(max)
2.5
4.0
-45 135
T
J
- Temperature - °C
499.4
499.8
500.0
500.6
45
I
ILIM
- Cycle-by-Cycle Current Limit Threshold - mV
500.2
499.6
15-15 75 105
500.4
UCC28250
www.ti.com SLUSA29C –APRIL 2010– REVISED JULY 2011
TYPICAL CHARACTERISTICS (continued)
OPERATING SUPPLY CURRENT SOFT-START CURRENT
vs vs
TEMPERATURE TEMPERATURE
Figure 24. Figure 25.
RAMP/CS CLAMP VOLTAGE AND HICCUP PULL-UP
CYCLE-BY-CYCLE CURRENT LIMIT THRESHOLD
vs vs
TEMPERATURE TEMPERATURE
Figure 26. Figure 27.
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