Datasheet

LT3504
4
3504fa
For more information www.linear.com/LT3504
Typical perForMance characTerisTics
Efficiency, f = 1MHz Efficiency, f = 1MHz Efficiency, f = 1MHz
Efficiency, f = 1MHz Load Regulation
EN/UVLO Threshold
EN/UVLO Pin Current
T
A
= 25°C, unless otherwise noted.
LOAD CURRENT (A)
0
EFFICIENCY (%)
40
60
1
3504 G01
20
0
0.2
0.1 0.3
0.5
0.4
0.6
0.7
0.9
0.8
80
30
50
10
70
V
IN
= 6V
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
V
OUT
= 1.8V
LOAD CURRENT (A)
0
EFFICIENCY (%)
40
60
1
3504 G02
20
0
0.2
0.1 0.3
0.5
0.4
0.6
0.7
0.9
0.8
90
80
30
50
10
70
V
IN
= 6V
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
V
OUT
= 2.5V
LOAD CURRENT (A)
0
EFFICIENCY (%)
40
60
1
3504 G03
20
0
0.2
0.1 0.3
0.5
0.4
0.6
0.7
0.9
0.8
90
80
30
50
10
70
V
IN
= 6V
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
V
OUT
= 3.3V
LOAD CURRENT (A)
0
EFFICIENCY (%)
40
60
1
3504 G04
20
0
0.2
0.1 0.3
0.5
0.4
0.6
0.7
0.9
0.8
100
90
80
30
50
10
70
V
IN
= 6V
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
V
OUT
= 5V
LOAD CURRENT (A)
0
PERCENT ERROR (%)
–3.0
–2.0
1
3504 G05
–4.0
–5.0
0.2
0.1 0.3
0.5
0.4
0.6
0.7
0.9
0.8
0
–0.5
–1.0
–3.5
–2.5
–4.5
–1.5
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
OUT
= 5V
V
IN
= 12V
Efficiency 5V/3.3V/2.5V/1.8V,
f = 1MHz
Efficiency, f = 1MHz
LOAD CURRENT EACH CHANNEL (A)
0
OVERALL APPLICATION EFFICIENCY (%)
40
60
1
3504 G06
20
0
0.2
0.1 0.3
0.5
0.4
0.6
0.7
0.9
0.8
100
90
80
30
50
10
70
V
IN
= 6V
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
V
OUT1,2,3,4
= 5V
LOAD CURRENT EACH CHANNEL (A)
0
OVERALL APPLICATION EFFICIENCY (%)
40
60
1
3504 G07
20
0
0.2
0.1 0.3
0.5
0.4
0.6
0.7
0.9
0.8
100
90
80
30
50
10
70
V
IN
= 6V
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
TEMPERATURE (°C)
–50
THRESHOLD (V)
1.30
1.40
125
3504 G08
1.20
0
–25 25
75
50
100
1.60
1.55
1.50
1.25
1.35
1.45
FALLING
RISING
V
EN/UVLO
(V)
0
I
EN/UVLO
(µA)
0.8
1.2
2.0
3504 G09
0
0.4
0.2 0.6
1.0
0.8 1.2
1.6
1.4
1.8
2.0
1.8
1.6
0.4
0.6
0.2
1.0
1.4
25°C
–45°C
150°C