B340A 查看數據表（PDF） - Linear Technology
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B340A Datasheet PDF : 24 Pages
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LT3975
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
Efficiency at 5VOUT
100
95
90
85
80
75
70
65
60 fSW = 800kHz
55 VOUT = 5V
L = MSS1260-332NL
50
0
0.5
1
1.5
12V
24V
36V
2
2.5
LOAD CURRENT (A)
3975 G01
Efficiency at 3.3VOUT
90
80
70
60
50
40
30
20
FRONT PAGE APPLICATION
10 VOUT = 3.3V
L = MSS1260-332NL
0
0.01 0.1 1 10 100
LOAD CURRENT (mA)
12V
24V
36V
1000 10000
3975 G03
Reference Voltage
1.230
1.225
1.220
1.215
1.210
1.205
1.200
1.195
1.190
1.185
1.180
1.175
1.170
–55 –25
5 35 65 95
TEMPERATURE (°C)
125 155
3975 G07
Efficiency at 3.3VOUT
90
85
80
75
70
65
60
55
50 FRONT PAGE APPLICATION
45 VOUT = 3.3V
L = MSS1260-332NL
40
0
0.5
1
1.5
12V
24V
36V
2
2.5
LOAD CURRENT (A)
3975 G02
No-Load Supply Current
4.5
IN REGULATION
4.0
VOUT = 3.3V
3.5
3.0
2.5
2.0
1.5
1.0
0
5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
3975 G05
Load Regulation
0.20
VIN = 12V
0.15 VOUT = 5V
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
0
0.5
1
1.5
INPUT VOLTAGE (V)
2
2.5
3975 G08
Efficiency at 5VOUT
100
fSW = 800kHz
90 VOUT = 5V
80 L = MSS1260-332NL
70
60
50
40
30
20
10
0
0.01
12V
24V
36V
0.1 1 10 100 1000 10000
LOAD CURRENT (mA)
3975 G03
No-Load Supply Current
10000
1000
FRONT PAGE APPLICATION
VIN = 12V
VOUT = 3.3V
DUE TO CATCH
100
DIODE LEAKAGE
10
1
–55 –25
5 35 65 95
TEMPERATURE (°C)
125 155
3975 G06
Line Regulation
0.05
0.04
VOUT = 5V
LOAD = 1A
0.03
0.02
0.01
0
–0.01
–0.02
–0.03
–0.04
–0.05
5
10 15 20 25 30 35
INPUT VOLTAGE (V)
40 45
2975 G09
3975f
4
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