LTC3738 Linear Technology, LTC3738 Datasheet - Page 6

• Manufacturer Part Number: LTC3738
• Description: 3-Phase Buck Controller
• Manufacturer: Linear Technology

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LTC3738
TYPICAL PERFOR A CE CHARACTERISTICS
6
3.0
2.5
2.0
2.5
2.0
1.5
1.0
0.5
5.0
4.5
4.0
3.5
60
80
70
50
40
30
20
10
0
0
PERCENTAGE OF NOMINAL OUTPUT VOLTAGE (%)
–45
–45
0
Short-Circuit Arming and Latchoff
vs Temperature
SS Pull-Up Current
vs Temperature
Percentage of Nominal Output
vs Peak I
–30
–30
10
20
–15
–15
SENSE
30
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
LATCHOFF
40
ARMING
15
15
(Foldback)
50
30
30
60
45
45
70
60
60
W
80
75
75
90
3738 G10
3738 G13
3738 G16
U
100
90
90
100
2.3
2.1
1.9
2.9
2.7
2.5
75
50
25
98
96
94
92
90
0
–45
–45
0
Supply Current vs Temperature
Maximum Current Sense
Threshold vs Duty Factor
Maximum Duty Factors
vs Temperature
–30
–30
20
–15
–15
TEMPERATURE (°C)
TEMPERATURE (°C)
DUTY FACTOR (%)
0
0
40
V
15
15
PLLFLTR
30
30
60
= 0V
45
45
60
60
80
75
75
3738 G14
3738 G11
3738 G17
T
A
100
90
90
= 25°C unless otherwise noted.
–100
–120
–140
–160
–180
–20
–40
–60
–80
–10
–20
65
60
55
50
45
40
35
30
25
90
80
70
60
50
40
30
20
10
0
0
–45
0
0
Shutdown Current
vs Temperature
Peak Current Threshold vs V
Total I
0.2 0.4 0.6 0.8 1
–30
0.4
–15
SENSE
TEMPERATURE (°C)
0.8
0
Current vs V
V
V
15
OUT
ITH
1.2
(V)
(V)
30
1.2 1.4 1.6 1.8
1.6
45
OUT
60
2.0
ITH
3738 G18
75
3738 G12
3738 G15
3738f
2.4
90
2