LT3481 LINER [Linear Technology], LT3481 Datasheet - Page 5

• Manufacturer Part Number: LT3481
• Description: 36V, 2A, 2.8MHz Step-Down Switching Regulator with 50?A Quiescent Current
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFORMANCE CHARACTERISTICS
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
700
600
400
300
200
500
100
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
–50
0
0
0
0
Switch Voltage Drop
Switching Frequency
Soft Start
R
T
–25
= 45.3k
500
0.5
0
RUN/SS PIN VOLTAGE (V)
1000
SWITCH CURRENT (mA)
1
TEMPERATURE (°C)
25
1500
1.5
50
2000
2
75
2500
2.5
100
3000 3500
125 150
3
4381 G13
3481 G16
3481 G10
3.5
1200
1000
400
800
600
200
90
80
70
60
50
40
20
30
10
12
10
0
0
0
8
6
4
2
0
0
0
Boost Pin Current
Frequency Foldback
RUN/SS Pin Current
R
T
200
= 45.3k
500
5
RUN/SS PIN VOLTAGE (V)
1000
SWITCH CURRENT (mA)
400
10
FB PIN VOLTAGE (mV)
1500
600
15
800
2000
20
1000
2500 3000
25
1200 1400
30
3481 G11
3481 G17
3481 G14
3500
35
1.290
1.285
1.280
1.275
1.270
1.265
1.260
1.255
1.250
140
120
100
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
80
60
40
20
0
0
–50
–50
0
Feedback Voltage
Minimum Switch On-Time
Boost Diode
–25
–25
BOOST DIODE CURRENT (A)
0.5
0
0
TEMPERATURE (°C)
TEMPERATURE (˚C)
25
25
50
1.0
50
LT3481
75
75
100
100
1.5
125 150
125
4381 G12
3481 G15
3481 G18
3481fb
5
150
2.0