LT3431 LINER [Linear Technology], LT3431 Datasheet - Page 5

• Manufacturer Part Number: LT3431
• Description: High Voltage, 3A,500kHz Step-Down Switching Regulator
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFOR A CE CHARACTERISTICS
0.9
575
550
525
500
475
450
425
2.1
1.9
1.5
1.3
1.1
0.7
1.7
–50
–50
V
Switching Frequency
C
Pin Shutdown Threshold
–25
–25
JUNCTION TEMPERATURE ( C)
JUNCTION TEMPERATURE ( C)
0
0
25
25
50
50
75
75
W
100
100
3431 G13
3431 G10
U
125
125
6.00
5.50
5.00
4.50
4.00
3.50
3.00
2.50
450
400
350
300
250
200
150
100
7.5
7.0
6.5
6.0
5.5
5.0
50
0
–50
0
Switch Voltage Drop
0
Switch Peak Current Limit
Minimum Input Voltage
with 5V Output
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
–25
JUNCTION TEMPERATURE ( C)
SWITCH CURRENT (A)
0
LOAD CURRENT (A)
1
T
MINIMUM INPUT
VOLTAGE TO START
MINIMUM INPUT
VOLTAGE TO RUN
25
J
= 25 C
50
T
T
2
J
J
75
= –40 C
= 125 C
100
3431 G16
3431 G11
3431 G14
125
3
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
0
0
–50
0
BOOST Pin Current
Switch Minimum ON Time
vs Temperature
–25
JUNCTION TEMPERATURE ( C)
SWITCH CURRENT (A)
0
1
25
50
LT3431
2
75
sn3431 3431fs
100
3431 G15
3431 G12
5
125
3