LT3150 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3150
Linear Technology
LT3150 Datasheet PDF : 20 Pages
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LT3150
TYPICAL PERFOR A CE CHARACTERISTICS
Boost Switching Regulator
Switch VCESAT vs Switch Current
700
TA = 25°C
600
Oscillator Frequency
vs Temperature
2.00
1.75
VIN = 5V
500
1.50
1.25
VIN = 1.5V
400
1.00
300
0.75
200
0.50
100
0.25
SHDN1 Input Bias Current
vs VSHDN1
50
TA = 25°C
40
30
20
10
0
0 100 200 300 400 500 600 700
SWITCH CURRENT (mA)
3150 G01
0
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
3150 G02
0
0
1
2
3
4
5
SHDN1 PIN VOLTAGE (V)
3150 G03
Switch Current Limit vs Duty Cycle
1000
900
800
70°C
700
600
25°C
500
–40°C
400
300
FB1 Reference Voltage
vs Temperature
1.25
1.24
VOLTAGE
1.23
1.22
1.21
200
10 20
Linear Regulator Controller
30 40 50 60
DUTY CYCLE (%)
70 80
3150 G04
1.20
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
3150 G05
VIN2 Quiescent Current
vs Temperature
19
18
17
16
15
VIN = 12V
14
VIN = 20V
13
12
VIN = 8V
11
10
9
8
7
6
5
–75 –50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
3150 G06
FB2 Reference Voltage
vs Temperature
1.222
1.220
1.218
1.216
1.214
1.212
1.210
1.208
1.206
1.204
1.202
1.200
1.198
–75 –50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
3150 G07
FB2 Input Bias Current
vs Temperature
4.0
3.5
3.0
2.5
2.0
1.5
1.0
VIN = 20V
0.5
VIN = 12V
VIN = 8V
0
–75 – 50 –25 0 25 50 75 100 125 150 175
TEMPERATURE (°C)
3150 G08
3150f
4
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