LT3757EMSE-TRPBF(RevB) 데이터 시트보기 (PDF) - Linear Technology
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LT3757EMSE-TRPBF Datasheet PDF : 36 Pages
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LT3757
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
Dynamic Quiescent Current
vs Switching Frequency
35
CL = 3300pF
30
25
20
15
10
5
0
0 100 200 300 400 500 600 700 800 900 1000
SWITCHING FREQUENCY (KHz)
3757 G04
RT vs Switching Frequency
1000
100
10
0 100 200 300 400 500 600 700 800 900 1000
SWITCHING FREQUENCY (KHz)
3757 G05
Normalized Switching Frequency
vs FBX
120
100
80
60
40
20
0
–0.8 –0.4
0 0.4 0.8
FBX VOLTAGE (V)
1.2 1.6
3757 G06
Switching Frequency
vs Temperature
330
RT = 41.2K
320
310
300
290
280
270
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3757 G07
SENSE Current Limit Threshold
vs Temperature
120
115
110
105
100
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3757 G08
SENSE Current Limit Threshold
vs Duty Cycle
115
110
105
100
95
0
20
40
60
DUTY CYCLE (%)
80
100
3757 G09
SHDN/UVLO Threshold
vs Temperature
1.28
1.26
1.24
SHDN/UVLO RISING
1.22
SHDN/UVLO FALLING
1.20
SHDN/UVLO Current vs Voltage
40
30
20
10
SHDN/UVLO Hysteresis Current
vs Temperature
2.4
2.2
2.0
1.8
1.18
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3757 G10
0
0
10
20
30
40
SHDN/UVLO VOLTAGE (V)
3757 G11
1.6
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3757 G12
3757fb
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