LT3479 LINER [Linear Technology], LT3479 Datasheet - Page 4

• Manufacturer Part Number: LT3479
• Description: 3A, Full Featured DC/DC Converter with Soft-Start and Inrush Current Protection
• Manufacturer: LINER [Linear Technology]

LT3479
TYPICAL PERFORMANCE CHARACTERISTICS
4
1.750
1.625
1.500
1.375
1.250
0.5
0.4
0.3
0.2
0.1
20
15
10
0
5
0
–50
–50
0
Switch V
SHDN Pin Turn-On Threshold
Soft-Start Pin Current
–25
–25
0.5
0
CE(SAT)
SWITCH CURRENT (A)
0
TEMPERATURE (°C)
TEMPERATURE (°C)
1
25
25
25°C
1.5
50
50
75
2
125°C
75
100
2.5
100
125
–50°C
3479 G01
3479 G04
3479 G07
125
150
3
1.6
1.2
0.4
2.0
0.8
50
10
40
30
20
0
6
5
3
2
1
0
0
4
–50
–50
0
Inductor and Switch Current Limit
SHDN Pin Current
Oscillator Frequency
–25
–25
4
0
INDUCTOR CURRENT LIMIT
0
TEMPERATURE (°C)
TEMPERATURE (°C)
SWITCH CURRENT LIMIT
8
25
V
25
R
R
R
SHDN
T
T
T
50
12
= 10k
= 15k
= 20k
–50°C
125°C
50
25°C
(V)
75
16
75
100
100
20
125
3479 G05
3479 G08
3479 G02
150
125
24
1.26
1.25
1.23
1.22
1.21
1.27
1.24
6
5
4
3
2
5
1
0
4
3
2
–50
–50
–50
V
V
Feedback Amplifi er Offset Voltage
V
REF
IN
C
–25
= 0.3V
–25
Pin Current
–25
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE ( C)
0
25
25
V
V
IN
IN
= 2.5V
50
50
25
= 24V
75
75
50
100
100
V
V
C
C
= 0.5V
75
= 1V
125
125
3479 G03
3479 G06
3479 G09
3479fb
150
150
100