LT3682 데이터 시트보기 (PDF) - Linear Technology
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LT3682 Datasheet PDF : 24 Pages
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LT3682
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
Switch Current Limit
1.9
1.7
SYNC < 0.3V
1.5
1.3
SYNC > 0.8V
1.1
OR CLOCKED
0.9
0.7
0.5
0
20
40
60
80
100
DUTY CYCLE (%)
3682 G10
Switch Current Limit
(SYNC Pin Grounded)
1.9
DC = 10%
1.7
1.5
1.3
DC = 90%
1.1
0.9
0.7
0.5
50 25
0 25 50 75
TEMPERATURE (°C)
100 125
3682 G11
Switch Voltage Drop
700
600
500
400
300
200
100
0
0
0.25 0.5 0.75
1
1.25
SWITCH CURRENT (A)
3682 G12
Boost Pin Current
35
30
25
20
15
10
5
0
0
0.25 0.5 0.75
1
1.25
SWITCH CURRENT (A)
3682 G13
Feedback Voltage
810
800
790
780
770
50 25
0 25 50 75
TEMPERATURE(°C)
100 125
3682 G14
Switching Frequency
1.20
RRT = 29.4k
1.15
1.10
1.05
1
0.95
0.90
0.85
0.80
50 25
0 25 50 75
TEMPERATURE(°C)
100 125
3682 G15
Frequency Foldback
1200
RRT = 29.4k
1000
800
600
400
200
0
0 100 200 300 400 500 600 700 800 900
FB PIN VOLTAGE (mV)
3682 G16
Minimum Switch On-Time
120
100
80
60
40
20
0
50 25
0 25 50 75
TEMPERATURE (°C)
100 125
3682 G17
Soft-Start
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0 0.5 1 1.5 2 2.5 3 3.5
RUN/SS PIN VOLTAGE (V)
3682 G18
3682f
5
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