LTC3733_15 Datasheet, PDF (6/32 Pages) Linear Technology – 3-Phase, Buck Controllers for AMD CPUs

LTC3733/LTC3733-1
TYPICAL PERFOR A CE CHARACTERISTICS
Short-Circuit Arming and Latchoff
vs Temperature
5.0
4.5
4.0
ARMING
3.5
LATCHOFF
3.0
2.5
2.0
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
3733 G10
SS Pull-Up Current vs
Temperature
2.5
2.0
1.5
1.0
0.5
0
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
3733 G13
Percentage of Nominal Output vs
Peak I_SENSE (Foldback)
80
70
60
50
40
30
20
10
0
0 10 20 30 40 50 60 70 80 90 100
PERCENTAGE OF NOMINAL OUTPUT VOLTAGE (%)
3733 G16
Supply Current vs Temperature
3.0
2.6
2.2
1.8
1.4
1.0
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
3733 G11
Maximum Current Sense
Threshold vs Duty Factor
75
50
25
0
0
20
40
60
80 100
DUTY FACTOR (%)
3733 G14
Maximum Duty Factors vs
Temperature
100
98
V_PLLFLTR = 0V
96
94
92
90
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
3733 G17
6
Shutdown Current vs
Temperature
40
35
30
25
20
15
10
5
0
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
3733 G12
Peak Current Threshold vs V_ITH
90
80
70
60
50
40
30
20
10
0
–10
–20
0
0.4 0.8 1.2 1.6 2.0 2.4
V_ITH (V)
3733 G15
I_SENSE Pin Current vs V_OUT
0
–10
–20
–30
–40
–50
–60
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
V_OUT (V)
3733 G18
3733f