LT3570(RevA) View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3570 Datasheet PDF : 20 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LT3570
VIN1 Quiescent Current
vs Temperature
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3570 G04
Bias Pin Current vs Temperature
3.0
VIN2 Quiescent Current
vs Temperature
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3570 G05
SHDN Pin UVLO vs Temperature
1.50
VIN3 Quiescent Current
vs Temperature
900
800
700
600
500
400
300
200
100
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3570 G06
SHDN Pin Current vs Voltage
50
2.5
1.25
40
2.0
1.00
30
1.5
0.75
20
1.0
0.50
0.5
0.25
10
0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3570 G07
0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3570 G08
0
0 5 10 15 20 25 30 35 40
VOLTAGE (V)
3570 G09
SW1 Current Limit vs Duty Cycle
3.0
SW1 Saturation Voltage
vs SW1 Current
350
2.5
300
2.0
1.5
1.0
0.5
0
0
10 20
TJ = 125°C
TJ = 25°C
TJ = –40°C
30 40 50 60 70 80 90 100
DUTY CYCLE (%)
3570 G10
250
200
150
100
50
TJ = 125°C
TJ = 25°C
TJ = –40°C
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
CURRENT (A)
3570 G11
3570fa
5
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