LT3685E Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT3685E Datasheet PDF : 24 Pages
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LT3685
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted.
Feedback Voltage
840
820
800
780
760
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3685 G09
Switching Frequency
1.20 RT = 29.4k
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3685 G10
Frequency Foldback
1200
RT = 29.4k
1000
800
600
400
200
0
0 100 200 300 400 500 600 700 800 900
FB PIN VOLTAGE (mV)
3685 G11
Minimum Switch On-Time
140
120
100
80
60
40
20
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (˚C)
3685 G12
Soft-Start
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0 0.5 1 1.5 2 2.5 3 3.5
RUN/SS PIN VOLTAGE (V)
3685 G13
RUN/SS Pin Current
12
10
8
6
4
2
0
05
10 15 20 25 30 35
RUN/SS PIN VOLTAGE (V)
3685 G14
Boost Diode
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0.5
1.0
1.5
2.0
BOOST DIODE CURRENT (A)
3685 G15
Error Amp Output Current
50
40
30
20
10
0
–10
–20
–30
–40
–50
–200
–100
0
100
FB PIN ERROR VOLTAGE (V)
200
3685 G16
3685fb
5
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