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LTC3609 Datasheet(PDF) 21 Page - Linear Technology

Part # LTC3609
Description  32V, 6A Monolithic Synchronous Step-Down DC/DC Converter
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3609 Datasheet(HTML) 21 Page - Linear Technology

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LTC3609
21
3609f
TYPICAL APPLICATIONS
5V to 32V Input to 1.2V/6A at 550kHz
VOUT
1.2V AT
6A
GND
VIN
VIN
5V TO 32V
COUT1
100μF
x2
L1
0.8μH
CIN
4.7μF
50V
x2
LTC3609
SGND
26
NC
25
NC
24
VFB
23
ION
22
NC
21
SGND
20
FCB
19
ITH
18
VRNG
17
PGOOD
16
SGND
15
SGND
GND
VOUT
1
2
3
4
5
6
7
SW
SW
SW
8
9 10 11
12 13 14
40 39 38 37 36 35 34 33
INTVCC
INTVCC
32
PGOOD
31
VIN
30 29 28 27
SW
41
SW
42
SW
43
SW
44
SW
45
SW
46
SW
47
PVIN
48
PVIN
49
PVIN
50
PVIN
51
PVIN
52
3609 TA03
CF
0.1μF
25V
RF1
1Ω
CVCC
4.7μF
6.3V
EXTVCC
C4
0.01μF
INTVCC
INTVCC
JP1
CB1
0.22μF
DB
CMDSH-3
CSS
0.1μF
VIN
CVON
0.1μF
R1
60.4k
1%
RPG1
100k
RON
182k
1%
R2
60.4k
1%
R5
8.45k
CC1
1500pF
CC2
100pF
VOUT
C5: TAIYO YUDEN JMK316BJ226ML-T
CIN: MURATA GRM32ER71H475K
COUT: MURATA GRM435R60J167M
LI: CDEP850R8MC-88
2Ω
R3
0Ω
KEEP POWER GROUND AND SIGNAL
GROUND SEPARATE. CONNECT AT
ONE POINT.
LOAD CURRENT (A)
0.01
80
10
3609 TA02c
50
75
70
65
60
55
0.1
1
90
85
VIN = 12V
FREQUENCY = 550kHz
LOAD STEP 1A TO 6A
VIN = 12V
VOUT = 1.2V
FCB = 0V
3609 TA02b
20μs/DIV
VOUT
200mV/DIV
IL
5A/DIV
Transient Response
Efficiency vs Load Current



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