lt3685emse-trpbf Linear Technology Corporation, lt3685emse-trpbf Datasheet - Page 5

• Manufacturer Part Number: lt3685emse-trpbf
• Description: 38v, 2a, 2.4mhz Step-down Switching Regulator
• Manufacturer: Linear Technology Corporation

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