TPS51222 Datasheet, PDF (12/42 Pages) Texas Instruments – Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller

TPS51222
SLUS908 – JANUARY 2009............................................................................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS (continued)
OVP/UVP THRESHOLD VOLTAGE
vs
JUNCTION TEMPERATURE
150
OVP
UVP
130
VBST LEAKAGE CURRENT
vs
JUNCTION TEMPERATURE
1.5
1.2
110
0.9
90
0.6
70
0.3
50
-50
66
64
62
60
58
56
54
-50
0
50
100
150
T_J – Junction Temperature – °C
Figure 13.
CURRENT LIMIT THRESHOLD
vs
JUNCTION TEMPERATURE
V_CSN (V)
1
5
12
0
50
100
150
T_J – Junction Temperature – °C
Figure 15.
0
-50
0
50
100
150
T_J – Junction Temperature – °C
Figure 14.
5-V OUTPUT VOLTAGE
vs
INPUT VOLTAGE
5.2
Auto-Skip Mode
5.1 _{fSW = 330 kHz}
5.0
4.9
4.8
4.7
4.6
4.5
4.4
4.3
4.2
4.5
I_O (A)
0
4
8
5.0
5.5
6.0
6.5
7.0
V_I – Input Voltage – V
Figure 16.
12
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