Datasheet

270
280
300
310
320
330
f
SW
– Switching Frequency – kHz
290
R
RF
= 330 kW
-50 0 50 100 150
T
J
– Junction Temperature – °C
0
0.05
0.10
0.15
0.20
0.25
V
FBST
– Forward Voltage Boost Voltage – V
-50 0 50 100 150
T
J
– Junction Temperature – °C
3.20
3.25
3.30
3.35
3.40
0 2 4 6 8 10
V
VREG3
– 3.3-V Linear Regulator Output Voltage – V
V
I
= 12 V
I
REG3
– 3-V Linear Regulator Output Current – mA
0 20 40 60 80 100
4.90
4.95
5.00
5.05
5.10
V
VREG5
– 5-V Linear Regulator Output Voltage – V
I
REG5
– 5-V Linear Regulator Output Current – mA
V
I
= 12 V
TPS51220A
SLUS897E –DECEMBER 2008–REVISED JANUARY 2013 www.ti.com
TYPICAL CHARACTERISTICS (continued)
VREG3 OUTPUT VOLTAGE VREG5 OUTPUT VOLTAGE
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 9. Figure 10.
SWITCHING FREQUENCY FORWARD VOLTAGE OF BOOST SW
vs vs
JUNCTION TEMPERATURE JUNCTION TEMPERATURE
Figure 11. Figure 12.
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