LT3581IMSE-TRPBF 查看數據表（PDF） - Linear Technology
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LT3581IMSE-TRPBF Datasheet PDF : 36 Pages
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LT3581
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
Switch Fault Current Limit vs
Duty Cycle
6
5
4
3
2
1
0
20 30 40 50 60 70 80
DUTY CYCLE (%)
3581 G01
Switch Saturation Voltage with
SW1 and SW2 Tied Together
450
400
350
300
250
200
150
100
50
0
0
1
2
3
4
5
SW1 + SW2 CURRENT (A)
3581 G02
Switch Fault Current Limit vs
Temperature
6
Positive Feedback Voltage
vs Temperature
1.2200
5
1.2175
4
3
1.2150
2
1.2125
1
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3581 G04
1.2100
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3581 G05
Current Sharing Between SW1 and
SW2 When Tied Together
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
5
SW1 + SW2 CURRENT (A)
3581 G03
CLKOUT Duty Cycle
vs Temperature
80
70
60
50
40
30
20
10
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3581 G06
Oscillator Frequency
3200
2800
2400
RT = 34k
2000
1600
1200
800
400
RT = 432k
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3581 G07
Frequency Foldback
1
1/2
1/3
1/4
1/5
1/6
INVERTING
BOOSTING
CONFIGURATIONS CONFIGURATIONS
0
0 0.2 0.4 0.6 0.8 1.0 1.2
FB VOLTAGE (V)
3581 G08
For more information www.linear.com/LT3581
Gate Current vs Gate Voltage
1000
900
–40°C
800
700
25°C
125°C
600
500
400
300
200
100
0
0
20
40
60
80
GATE VOLTAGE (V)
3581 G09
3581fb
5
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