TPS40222_15 Datasheet, PDF (6/28 Pages) Texas Instruments – 1.6-A, 1.25-MHz BUCK CONVERTER IN A 3 mm ´ 3 mm SON PACKAGE

TPS40222
SLUS642A – OCTOBER 2005 – REVISED JANUARY 2006
TYPICAL CHARACTERISTICS
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FEEDBACK VOLTAGE
vs
INPUT VOLTAGE (NO LOAD)
803
FEEDBACK VOLTAGE
vs
JUNCTION TEMPERATURE
803
802
802
801
801
800
799
798
797
4
5
6
7
8
9
V_IN − Input Voltage − V
Figure 1.
OSCILLATOR FREQUENCY
vs
FEEDBACK VOLTAGE
1.3
V_IN = 5 V
1.1
0.9
0.7
0.5
0.3
0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
V_FB − Feedback Voltage − V
Figure 3.
800
799
798
797
−50
−25 0
25 50 75 100 125
T_J − Junction Temperature − °C
Figure 2.
OSCILLATOR FREQUENCY
vs
INPUT VOLTAGE
1.30
V_FB = 0.8 V
1.28
1.26
1.24
1.22
1.20
4
5
6
7
8
9
V_IN − Input Voltage − V
Figure 4.
6