LT3570
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN1
Quiescent Current
vs Temperature
3.5
3.0
2.5
CURRENT (mA)
CURRENT (mA)
2.0
1.5
1.0
0.5
0
–50 –25
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
25 50 75 100 125 150
TEMPERATURE (°C)
3570 G04
V
IN2
Quiescent Current
vs Temperature
900
800
700
CURRENT (μA)
600
500
400
300
200
100
0
25 50 75 100 125 150
TEMPERATURE (°C)
3570 G05
V
IN3
Quiescent Current
vs Temperature
0
–50 –25
0
–50 –25
0
25
50
75
100 125 150
3570 G06
TEMPERATURE (°C)
Bias Pin Current vs Temperature
3.0
2.5
CURRENT (mA)
2.0
1.5
1.0
0.5
0
–50 –25
SHDN
PIN VOLTAGE (V)
1.50
1.25
1.00
0.75
0.50
0.25
SHDN
Pin UVLO vs Temperature
50
SHDN
Pin Current vs Voltage
40
CURRENT (μA)
25 50 75 100 125 150
TEMPERATURE (°C)
3570 G08
30
20
10
0
25 50 75 100 125 150
TEMPERATURE (°C)
3570 G07
0
–50 –25
0
0
0
5
10
15 20
25
VOLTAGE (V)
30
35
40
3570 G09
SW1 Current Limit vs Duty Cycle
3.0
2.5
2.0
1.5
1.0
0.5
0
0
T
J
= 125°C
T
J
= 25°C
T
J
= –40°C
10 20 30 40 50 60 70 80 90 100
DUTY CYCLE (%)
3570 G10
SW1 Saturation Voltage
vs SW1 Current
350
300
250
VOLTAGE (mV)
CURRENT (A)
200
150
100
50
0
T
J
= 125°C
T
J
= 25°C
T
J
= –40°C
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
LINER [ LINEAR TECHNOLOGY ]
