LTC3775EUD 查看數據表（PDF） - Linear Technology
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LTC3775EUD Datasheet PDF : 34 Pages
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LTC3775
TYPICAL PERFORMANCE CHARACTERISTICS
Pulse-Skipping Mode Waveform
with 0.1A Load
Output Short-Circuit Waveform
VOUT(AC)
100mV/DIV
IL
2A/DIV
VSW
10V/DIV
VIN = 12V
VOUT = 1.2V
LOAD = 0.1A
5μs/DIV
MODE/SYNC = INTVCC
SW FREQ = 500kHz
FIRST PAGE CIRCUIT
IL
20A/DIV
0A LOAD
VSS
1V/DIV
3775 G10
VIN = 12V
20μs/DIV
VOUT = 1.2V
CSS = 0.01μF
FIRST PAGE CIRCUIT
3775 G25
Duty Cycle vs VCOMP
100
90
VIN = 5V VIN = 12V VIN = 24V
80
70
VIN = 40V
60
50
40
30
20
10
0
0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
VCOMP (V)
3775 G12
ILIMT vs Temperature
110
108
106
104
102
100
98
96
94
92
90
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3775 G13
ILIMB vs Temperature
11.0
10.8
10.6
10.4
10.2
10.0
9.8
9.6
9.4
9.2
9.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3775 G15
6
IRUN vs Temperature
0
–0.2
–0.4
–0.6
–0.8
–1.0
–1.2
–1.4
–1.6
–1.8
–2.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3775 G16
Switching Frequency vs
Temperature
550
540
530
520
510
500
490
480
470
460
450
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3775 G11
ILIMT vs Input Voltage
110
108
106
104
102
100
98
96
94
92
90
4 8 12 16 20 24 28 32 36 40
INPUT VOLTAGE (V)
3775 G14
Shutdown Current vs
Input Voltage
35
30
25
20
15
10
5
0
4 8 12 16 20 24 28 32 36 40
INPUT VOLTAGE (V)
3775 G17
3775fa
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