lt3693 Linear Technology Corporation, lt3693 Datasheet - Page 5

• Manufacturer Part Number: lt3693
• Description: 36v, 3.5a, 2.4mhz Step-down Switching Regulator
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
140
120
840
820
800
780
760
100
1.4
1.2
1.0
0.8
0.6
0.4
0.2
80
60
40
20
0
–50
0
–50
0
Minimum Switch On-Time
Boost Diode
Feedback Voltage
–25
–25
BOOST DIODE CURRENT (A)
0.5
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
50
50
1.0
75
75
100
100
W
1.5
125
125
3693 G15
3693 G12
3693 G18
U
150
150
2.0
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
–10
–20
–30
–40
–50
50
40
30
20
10
7
6
5
4
3
2
1
0
0
–200
–50
Switching Frequency
0
Soft-Start
Error Amp Output Current
R
T
–25
0.5
= 34.0k
FB PIN ERROR VOLTAGE (mV)
–100
RUN/SS PIN VOLTAGE (V)
0
1
TEMPERATURE ( C)
25
1.5
50
0
2
75
2.5
100
100
125
3
3693 G13
3693 G16
3693 G19
T
A
150
3.5
200
= 25°C unless otherwise noted.
1200
1000
800
600
400
200
5.0
4.5
4.0
3.5
3.0
2.5
2.0
12
10
0
0
8
6
4
2
0
RUN/SS Pin Current
0
Frequency Foldback
Minimum Input Voltage
1
V
T
L = 4.7 H
f = 600kHz
R
OUT
A
T
100
= 25 C
= 34.0k
5
= 3.3V
200
RUN/SS PIN VOLTAGE (V)
10
10
FB PIN VOLTAGE (mV)
LOAD CURRENT (mA)
300
15
400
100
500
20
LT3693
600
25
1000
700
30
800
3693 G17
3693 G14
3693 G20
5
3693f
10000
900
35