ltm4612 Linear Technology Corporation, ltm4612 Datasheet - Page 18
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ltm4612
Manufacturer Part Number
ltm4612
Description
Ultralow Noise 36vin, 15vout, 5a, Dc/dc ?module
Manufacturer
Linear Technology Corporation
Datasheet
1.LTM4612.pdf
(24 pages)
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LTM4612
APPLICATIONS INFORMATION
18
EXTERNAL 5V SUPPLY
IMPROVES EFFICIENCY—
ESPECIALLY FOR HIGH
INPUT VOLTAGES
22V TO 36V
V
IN
5V TO 36V
V
C
10μF
50V CERAMIC
IN
IN
Figure 19. Typical 5V to 36V
R5
2M
C
10μF
50V CERAMIC
IN
R4
100k
R4
100k
R
191k
1%
V
Figure 18. Typical 22V to 36V
fSET
OUT
V
R3
100k
OUT
C4
0.01μF
ON/OFF
R3
100k
C4
0.01μF
ON/OFF
PGOOD
RUN
COMP
INTV
DRV
f
TRACK/SS
V
SET
D
V
PGOOD
RUN
COMP
INTV
DRV
f
TRACK/SS
SET
SGND
CC
C1
10μF
50V
CC
D
IN
SGND
LTM4612
CC
C1
10μF
50V
CC
V
, 3.3V at 5A Design with 400kHz Frequency
IN
LTM4612
V
PGND
IN
MARG0
MARG1
PGND
MPGM
PLLIN
V
MARG0
MARG1
FCB
OUT
V
MPGM
PLLIN
CLOCK SYNC
FB
V
FCB
OUT
V
CLOCK SYNC
FB
IN
, 12V at 5A Design
R1
392k
5% MARGIN
MARGIN
CONTROL
R1
392k
5% MARGIN
MARGIN
CONTROL
4612 F18
4612 F19
R
5.23k
FB
C3
22pF
R
22.1k
FB
C3
22pF
REFER TO TABLE 2
REFER TO TABLE 2
C
22μF
16V
OUT1
C
22μF
6.3V
OUT1
+
+
C
220μF
16V
OUT2
C
220μF
6.3V
OUT2
V
12V
5A
OUT
V
3.3V
5A
OUT
4612f