ltm4612 Linear Technology Corporation, ltm4612 Datasheet - Page 5

• Manufacturer Part Number: ltm4612
• Description: Ultralow Noise 36vin, 15vout, 5a, Dc/dc ?module
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
200mV/
2A/DIV
100
100
DIV
75
95
90
85
80
70
65
60
95
90
85
80
75
70
65
60
55
50
0
Effi ciency vs Load Current with
3.3V
0
Effi ciency vs Load Current with
15V
Transient Response from 24V
to 12V
LOAD STEP: 0A to 3A
C
2 47μF CERAMIC CAPACITORS
OUT
OUT
= 2 22μF CERAMIC CAPACITORS AND
OUT
1
OUT
1
(FCB = 0, Refer to Figure 20)
(FCB = 0)
LOAD CURRENT (A)
LOAD CURRENT (A)
2
2
50μs/DIV
3
3
5V
12V
24V
36V
28V
32V
36V
IN
IN
IN
IN
IN
IN
IN
3.3V
4
4
3.3V
3.3V
3.3V
15V
15V
15V
IN
OUT
OUT
OUT
OUT
4612 G04
OUT
OUT
OUT
4612 G01
4612 G07
5
5
100mV/DIV
0.2A/DIV
2A/DIV
5V/DIV
V
OUT
75
I
95
90
85
80
70
65
60
55
50
IN
LOAD STEP: 0A to 3A
C
2 47μF CERAMIC CAPACITORS
0
SOFT-START CAPACITOR: 3.9nF
C
1 47μF OSCON CAPACITOR
Effi ciency vs Load Current with
5V
Transient Response from 12V
to 3.3V
Start-Up with 24V
at I
OUT
IN
OUT
= 3 10μF CERAMIC CAPACITORS AND
OUT
= 2 22μF CERAMIC CAPACITORS AND
1
(FCB = 0)
OUT
= 0A
LOAD CURRENT (A)
500μs/DIV
2
50μs/DIV
IN
to 12V
3
12V
24V
36V
OUT
IN
IN
IN
4
5V
5V
5V
(Refer to Figure 18)
IN
OUT
OUT
OUT
4612 G05
4612 G08
4612 G02
5
100mV/DIV
1A/DIV
5V/DIV
2A/DIV
V
100
OUT
75
I
95
90
85
80
70
65
60
55
50
IN
0
SOFT-START CAPACITOR: 3.9nF
C
1 47μF OSCON CAPACITOR
Effi ciency vs Load Current with
12V
Transient Response from 12V
to 5V
LOAD STEP: 0A to 3A
C
2 47μF CERAMIC CAPACITORS
Start-Up with 24V
I
OUT
OUT
IN
= 3 10μF CERAMIC CAPACITORS AND
OUT
= 2 22μF CERAMIC CAPACITORS AND
= 5A
OUT
1
(FCB = 0)
LOAD CURRENT (A)
500μs/DIV
2
50μs/DIV
LTM4612
IN
to 12V
3
20V
24V
28V
36V
IN
IN
IN
IN
OUT
4
12V
12V
12V
12V
IN
at
OUT
OUT
OUT
OUT
4612 G03
4612 G09
4612 G06
5
4612f
5