lt3573 Linear Technology Corporation, lt3573 Datasheet - Page 4

• Manufacturer Part Number: lt3573
• Description: Isolated Flyback Converter Without An Opto-coupler
• Manufacturer: Linear Technology Corporation

LT3573
TYPICAL PERFORMANCE CHARACTERISTICS
4
400
350
300
250
200
150
100
50
0
0
Switch V
0.25
CESAT
SWITCH CURRENT (A)
0.50
0.75
1.28
1.24
1.18
1.26
1.22
1.20
125°C
–60
SHDN/UVLO Falling Threshold
1.00
–40
–20
–50°C
1.25
25°C
3573 G04
0
TEMPERATURE (°C)
1.50
20
40
60
1.8
1.6
1.2
1.0
0.8
1.4
0.6
0.4
0.2
80
0
–50
Switch Current Limit
100
RILIM = 10k
–25
120
3573 G07
MAXIMUM CURRENT LIMIT
MINIMUM CURRENT LIMIT
140
0
TEMPERATURE (°C)
25
50
75
12
10
8
6
4
2
0
–60
SS Pin Current
100
–40
T
3573 G05
A
= 25°C, unless otherwise noted.
–20
125
0
TEMPERATURE (°C)
20
1.8
1.6
1.2
1.4
1.0
0.8
0.6
0.4
0.2
40
0
0
Switch Current Limit vs R
60
80
10
100
R
ILIM
120
3573 G08
20
RESISTANCE (k)
140
30
ILIM
40
3573 G06
3573f
50