LT3592
(TA = 25°C, unless otherwise noted)
TYPICAL PERFORMANCE CHARACTERISTICS
Undervoltage Lockout
vs Temperature
Switching Frequency
vs Temperature
Current Limit During Soft Start
3.4
3.3
3.2
3.1
2300
2100
1900
1700
1500
1300
1100
900
1400
1200
1000
800
600
400
200
0
R
= 48.7k
T
R
R
= 140k
= 357k
T
700
500
T
300
–50
0
50
100
150
–50 –30 –10 10 30 50 70 90 110 130
0.5
1
1.5
2
2.5
TEMPERATURE (°C)
TEMPERATURE (°C)
V
(V)
SHDN
3592 G10
3592 G11
3592 G12
Switch Current Limit
Frequency Foldback
Switch Current Limit
1.4
2500
2000
1500
1000
500
1.50
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
R
T
= 48.7k
1.3
1.2
1.1
1
TYPICAL
0.9
0.8
0.7
0.6
0.5
0
0
20
40
60
80
100
600 800 1000 1200 1400 1600 1800 2000 2200
–50 –30 –10 10 30 50 70 90 110 130
DUTY CYCLE (%)
SHDN VOLTAGE (mV)
TEMPERATURE (°C)
3592 G14
3592 G13
3592 G15
Operating Waveforms,
Discontinuous Mode
Operating Waveforms
V
V
SW
5V/DIV
SW
5V/DIV
V
V
CAP
CAP
10mV/DIV
10mV/DIV
AC-COUPLED
AC-COUPLED
I
I
L
L
500mA/DIV
500mA/DIV
3592 G16
3592 G17
500ns/DIV
500ns/DIV
3592fc
5
Linear Systems [ Linear Systems ]
