Datasheet

LTC3609
26
3609fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
l
FAX: [phone]
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www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2008
LT 0610 REV B • PRINTED IN USA
relaTeD parTs
Typical applicaTion
Figure 8. 14V to 32V Input to 12V/4A at 500kHz
V
OUT
12V AT
4A
GND
V
IN
V
IN
14V TO 32V
C
OUT1
180µF
16V
L1
4.3µH
C
IN
4.7µF
x2
+
LTC3609
SGND
26
NC
25
NC
24
V
FB
23
I
ON
22
NC
21
SGND
20
FCB
19
I
TH
18
V
RNG
17
PGOOD
16
SGND
15
SGND
GND
V
OUT
PV
IN
1
PV
IN
2
PV
IN
3
PV
IN
4
PV
IN
5
PV
IN
6
PV
IN
7
SW
SW
SW
SW
8
NC
9
SGND
10
BOOST
11
RUN/SS
12
V
ON
13
SGND
14
PGND
40
PGND
39
PGND
38
PGND
37
PGND
36
PGND
35
PGND
34
SW
33
INTV
CC
INTV
CC
INTV
CC
32
INTV
CC
PGOOD
31
SV
IN
V
IN
30
EXTV
CC
29
NC
28
SGND
27
SW
41
SW
42
SW
43
SW
44
SW
45
SW
46
SW
47
PV
IN
48
PV
IN
49
PV
IN
50
PV
IN
51
PV
IN
52
3609 TA05
C
F
0.1µF
50V
R
F1
1Ω
C
VCC
4.7µF
6.3V
EXTV
CC
C4
0.01µF
INTV
CC
INTV
CC
JP1
C
B1
0.22µF
D
B
CMDSH-3
C
SS
0.1µF
V
IN
C
VON
0.1µF
R1
3.16k
1%
R
PG1
100k
R
ON
1M
1%
R2
60.4k
1%
R5
24.3k
C
C1
1000pF
C
C2
100pF
INTV
CC
C
IN
: MURATA GRM31CR71H475K
C
OUT
: SANYO 16SVP180MX
L
I
: CDEP4R3MC-88
2Ω
KEEP POWER GROUND AND SIGNAL
GROUND SEPARATE. CONNECT AT
ONE POINT.
PART NUMBER DESCRIPTION COMMENTS
LTC3602 2.5A (I
OUT
), 3MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 4.5V to 10V, V
OUT(MIN)
= 0.6V, I
Q
= 75µA, I
SD
<1µA,
4mm × 4mm QFN-20, TSSOP-16E Packages
LTC3608 18V, 8A (I
OUT
), 1MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 4V to 18V, V
OUT(MIN)
= 0.6V, I
Q
= 900µA, I
SD
<15µA,
7mm × 8mm QFN-52 Package
LTC3610 24V, 12A (I
OUT
), 1MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 4V to 24V, V
OUT(MIN)
= 0.6V, I
Q
= 900µA, I
SD
<15µA,
9mm × 9mm QFN-64 Package
LTC3611 32V, 10A (I
OUT
), 1MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 4V to 32V, V
OUT(MIN)
= 0.6V, I
Q
= 900µA, I
SD
<15µA,
9mm × 9mm QFN-64 Package
LTC3414/
LTC3416
4A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 2.25V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 64µA, I
SD
<1µA,
TSSOP20E Package
LTC3415 7A (I
OUT
), 1.5MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
= 0.6V, I
Q
= 450µA, I
SD
<1µA,
5mm × 7mm QFN-38 Package
LTC3418 8A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN
: 2.25V to 5.5V, V
OUT(MIN)
= 0.8V, I
Q
= 380µA, I
SD
<1µA,
5mm × 7mm QFN-38 Package