Datasheet
LTC3611
26
3611fd
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2008
LT 0610 REV D • PRINTED IN USA
relAteD pArts
typicAl ApplicAtion
PART NUMBER DESCRIPTION COMMENTS
LTC1778 No R
SENSE
Current Mode Synchronous Step-Down Controller Up to 97% Efficiency, V
IN
: 4V to 36V, 0.8V ≤ V
OUT
≤ (0.9)(V
IN
),
I
OUT
Up to 20A
LTC3411 1.25A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT
: 0.8V, I
Q
: 60μA, I
SD
: <1μA,
MS Package
LTC3412 2.5A (I
OUT
) 4MHz Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
: 0.8V, I
Q
: 60mA,
I
SD
: <1mA, TSSOP16E
LTC3414 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
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, Thermally
Enhanced 38-Lead QFN Package
LTC3610 12A Current Mode Monolithic Synchronous Step-Down Converter Up to 24V Input (28V Maximum), Current Mode Extremely Fast
Transient Response
LTC3770 Fast, No R
SENSE
Step-Down Synchronous Controller with
Margining, Tracking, PLL
±0.67% 0.6V Reference Voltage; Programmable Margining;
True Current Mode; 4V ≤ V
IN
≤ 32V
LTC3778 Low V
OUT
, No R
SENSE
Synchronous Step-Down Controller 0.6V ≤ V
OUT
≤ (0.9) V
IN
, 4V ≤ V
IN
≤ 36V, I
OUT
Up to 20A
LT3800 60V Synchronous Step-Down Controller Current Mode, Output Slew Rate Control
LTM4600HV 10A Complete Switch Mode Power Supply 92% Efficiency, V
IN
: 4.5V to 28V, V
OUT
: 0.6V, True Current Mode
Control, Ultrafast Transient Response
LTM4601HV 12A Complete Switch Mode Power Supply 92% Efficiency, V
IN
: 4.5V to 28V, V
OUT
: 0.6V, True Current Mode
Control, Ultrafast Transient Response
LTM4602HV 6A Complete Switch Mode Power Supply 9
2
% Efficiency, V
IN
: 4.5V to 28V, V
OUT
: 0.6V, True Current Mode
Control, Ultrafast Transient Response
LTM4603HV 6A Complete Switch Mode Power Supply 9
3
% Efficiency, V
IN
: 4.5V to 28V, with PLL, Output Tracking and Margining
14V to 32V Input to 12V/5A at 500kHz
V
OUT
12V AT
5A
GND
GND
V
IN
V
IN
14V TO 32V
C
OUT
180µF
16V
C5
22µF
25V
L1
4.7µH
C
IN
4.7µF
50V
×2
+
C6
100µF
50V
+
(OPTIONAL)
(OPTIONAL)
C
IN
: GRM31CR71H475K
C
OUT
: SANYO 16SVP180MX
L1: HCP0703-4R7-R
KEEP POWER AND SIGNAL GROUNDS SEPARATE.
CONNECT TO ONE POINT.
LTC3611
SGND
48
SGND
47
SGND
46
SGND
45
EXTV
CC
EXTV
CC
44
V
FB
43
SGND
42
I
ON
41
SGND
40
FCB
39
I
TH
38
V
RNG
37
PGOOD
36
V
ON
35
SGND
34
SGND
PGND SGND
I
NTVCC
V
OUT
33
PV
IN
17
PV
IN
18
PV
IN
19
PV
IN
20
PV
IN
21
PV
IN
22
PV
IN
23
PV
IN
24
PV
IN
25
SW
26 27
SGND
28 29
RUN/SS
30
SGND
31
SGND
32
PGND
64
PGND
63
PGND
62
PGND
61
PGND
60
PGND
59
PGND
58
PGND
57
PGND
56
SW
55
INTV
CC
INTV
CC
54
INTV
CC
INTV
CC
53
SV
IN
V
IN
52
SV
IN
51
SGND
50
SGND
49
PGND
1
PGND
2
PGND
3
SW
4
SW
5
SW
6
SW
7
SW
8
SW
9
SW
10
SW
11
PV
IN
V
IN
12
PV
IN
13
PV
IN
14
PV
IN
15
PV
IN
16
3611 TA05
C
F
0.1µF
50V
C
VCC
4.7µF
6.3V
C
ON
0.01µF
C4
0.01µF
C2C1
RUN/SS
C
SS
0.1µF
V
IN
R
SS1
510k
(OPTIONAL)
(OPTIONAL)
(OPTIONAL)
R1
1.58k
1%
R2
30.1k
1%
R
PG1
100k
R
ON
1M
1%
R5
20k
C
C1
560pF
C
C2
100pF
(OPTIONAL)
C
VON
(OPTIONAL)
NC
D
B
CMDSH-3
SW
BOOST
INTV
CC
C
B1
0.22µF