lt3480emse-trpbf Linear Technology Corporation, lt3480emse-trpbf Datasheet - Page 5

• Manufacturer Part Number: lt3480emse-trpbf
• Description: 38v, 2a, 2.4mhz Step-down Switching Regulator With 70?a Quiescent Current
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
700
400
600
500
300
200
100
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
1.0
4.0
3.5
3.0
2.5
2.0
1.5
0.5
0
0
–50
0
0
Switch Voltage Drop
Switching Frequency
Soft-Start
–25
0.5
500
RUN/SS PIN VOLTAGE (V)
SWITCH CURRENT (mA)
0
1
TEMPERATURE (°C)
1000
25
1.5
50
1500
2
75
2.5
100
2000
125
3
3480 G10
3480 G16
4380 G13
2500
3.5
150
1200
1000
12
10
80
70
60
50
40
30
20
10
800
600
400
200
6
4
0
8
2
0
0
0
0
Boost Pin Current
Frequency Foldback
RUN/SS Pin Current
0
100
5
500
200
RUN/SS PIN VOLTAGE (V)
SWITCH CURRENT (mA)
10
FB PIN VOLTAGE (mV)
300
1000
15
400
20
500
1500
600
25
2000
700
30
3480 G17
3480 G11
800
3480 G14
2500
35
900
140
120
100
1.4
1.2
1.0
0.8
0.6
0.4
0.2
80
60
40
20
840
820
800
780
760
0
–50
0
–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
75
LT3480
75
100
1.5
100
125
125
3480 G15
3480 G18
4380 G12
3480fb
5
150
2.0
150