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LTC3609 Datasheet(PDF) 23 Page - Linear Technology

Part # LTC3609
Description  32V, 6A Monolithic Synchronous Step-Down DC/DC Converter
PDF  26 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3609 Datasheet(HTML) 23 Page - Linear Technology

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LTC3609

3609fb
Typical applicaTions
5Vto32VInputto1.8V/6AAllCeramic1MHz
VOUT
1.8V AT
6A
GND
VIN
VIN
5V TO 32V
COUT1
100µF
x2
L1
0.47µH
CIN
4.7µF
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 TA04
CF
0.1µF
50V
RF1
1
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
10k
1%
RPG1
100k
RON
102k
1%
R2
20k
1%
R5
5.76k
CC1
1500pF
CC2
100pF
VOUT
C5: TAIYO YUDEN JMK316BJ226ML-T
CIN: MURATA GRM32ER71H475K
COUT: MURATA GRM32ER60J107M
LI: 1HLP25CZERR80M01
2
KEEP POWER GROUND AND SIGNAL
GROUND SEPARATE. CONNECT AT
ONE POINT.
LOAD CURRENT (mA)
10
80
10000
3609 TA04c
0
50
40
30
20
10
70
60
100
1000
100
90
LOAD STEP 500mA TO 4A
VIN = 12V
VOUT = 1.8V
FCB = 0V
3609 TA04b
20µs/DIV
VOUT
200mV/DIV
IL
5A/DIV
TransientResponse
EfficiencyvsLoadCurrent



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