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LTC3608 Datasheet(PDF) 21 Page - Linear Technology

Part # LTC3608
Description  18V, 8A 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

LTC3608 Datasheet(HTML) 21 Page - Linear Technology

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LTC3608
21
3608fa
5V to 18V Input to 1.2V/8A at 550kHz
TYPICAL APPLICATIONS
Transient Response
Efficiency vs Load Current
EXTVCC
C4
0.01μF
C5: TAIYO YUDEN JMK316BJ226ML-T
CIN: TAIYO YUDEN TMK432BJ106MM
COUT1: TDKC4532X5R107M
L1: CDEP85NP-R50MC-125
KEEP POWER GROUND AND SIGNAL GROUND SEPARATE.
CONNECT AT ONE POINT.
3608 TA03
VOUT
1.2V AT
8A
GND
COUT1
100μF
×2
C5
22μF
6.3V
L1
0.5μH
GND
VIN
VIN
5V TO 18V
CIN
10μF
25V
3×
C6
10μF
35V
+
(OPTIONAL)
+
(OPTIONAL)
INTVCC
CB1
0.22μF
VIN
CSS
0.1μF
RSS1
510k
PGND
SGND
(OPTIONAL)
SW
INTVCC
CVCC
4.7μF
6.3V
VIN2
CF
0.47μF
25V
R5
7.68k
CC1
1500pF
CON
0.01μF
VIN
(OPTIONAL)
RON
187k
1%
VOUT
C2
C1
(OPTIONAL)
R1
30k
1%
R2
30.1k
1%
(OPTIONAL)
INTVCC
RPG1
100k
CC2
100pF
LTC3608
SGND
26
NC
25
NC
24
VFB
23
ION
22
NC
21
SGND
20
FCB
19
ITH
18
VRNG
17
PGOOD
16
SGND
15
1
2
3
4
5
6
7
8
9 10 11 12 13 14
40 39 38 37 36 35 34 33 32 31 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
SGND
VOUT
0.1μF
VOUT
DB
CMDSH-3
CVON
(OPTIONAL)
RF1
1Ω
RVON
= SGND
= PGND
LOAD STEP 1A-8A
VIN = 12V
VOUT = 1.2V
FCB = 0V
3608 TA03a
200mV
VOUT
200mV/DIV
IL
5A/DIV
LOAD CURRENT (A)
100
50
55
65
75
60
70
80
85
90
1000
1000
3608 TA03b
10000
VIN = 12V
FREQ = 550kHz
OCM
DCM



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