LT1424-5 Linear Technology, LT1424-5 Datasheet - Page 4

• Manufacturer Part Number: LT1424-5
• Description: Isolated Flyback Switching Regulator with 5V Output
• Manufacturer: Linear Technology

LT1424-5
TYPICAL PERFOR A CE CHARACTERISTICS
4
5.36
5.34
5.32
5.30
4.28
4.26
4.24
1.2
1.0
0.8
0.6
0.4
0.2
300
295
290
285
280
275
270
265
0
– 50
– 50
0
Switch Saturation Voltage
vs Switch Current
Reference Voltage
vs Temperature
Switching Frequency
vs Temperature
0.2
– 25
– 25
0.4
SWITCH CURRENT (A)
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
0.6
25
25
0.8
50
50
1.0
75
75
W
–55 C
125 C
1.2
100
100
25 C
1424-5 G01
1424-5 G04
1424-5 G07
U
1.4
125
125
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
–20
–40
–60
–80
2.0
1.5
1.0
0.5
60
40
20
0
0
4.50
–50
Switch Current Limit
vs Duty Cycle
0
Feedback Amplifier Output
Current vs Flyback Voltage
Minimum Synchronization
Voltage vs Temperature
T
10 20 30
A
4.75
–25
= 25 C
5.00
FLYBACK VOLTAGE (V)
0
TEMPERATURE ( C)
DUTY CYCLE (%)
40
5.25
25
50 60 70 80 90 100
5.50
50
5.75
75
25 C
125 C
–55 C
6.00 6.25
100
1424-5 G08
1424-5 G05
1424-5 G02
125
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
–1
–2
–3
–4
–50
1
0
–50
Minimum Input Voltage
vs Temperature
V
Voltage vs Temperature
SHDN Pin Input Current
vs Voltage
0
C
T
–25
Pin Threshold and High Clamp
–25
A
= 25 C
1
SHDN PIN VOLTAGE (V)
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
V
V
25
25
2
C
C
HIGH CLAMP
THRESHOLD
50
50
3
75
75
4
100
100
1424-5 G03
1424-5 G06
1424-5 G09
125
125
5