28
LTC3776
3776fa
PART NUMBER DESCRIPTION COMMENTS
LTC1735 High Efficiency Synchronous Step-Down Controller Burst Mode Operation, 16-Pin Narrow SSOP, Fault Protection,
3.5V ≤ V
IN
≤ 36V
LTC1772 Constant Frequency Current Mode Step-Down 2.5V ≤ V
IN
≤ 9.8V, I
OUT
Up to 4A, SOT-23 Package, 550kHz
DC/DC Controller
LTC1778 No R
SENSE
TM
Synchronous Step-Down Controller Current Mode Operation Without Sense Resistor,
Fast Transient Response, 4V ≤ V
IN
≤ 36V
LTC2923 Power Supply Tracking Controller Controls Up to Three Supplies, 10-Lead MSOP
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
= 0.8V, I
Q
= 60μA,
I
SD
= <1μA, TSSOP-16E Package
LTC3413 3A Monolithic DDR Memory Termination Regulator ±3A Output Current, 2.25V ≤ V
IN
≤ 5.5V
LTC3701 2-Phase, Low Input Voltage Dual Step-Down DC/DC Controller 2.5V ≤ V
IN
≤ 9.8V, 550kHz, PGOOD, PLL, 16-Lead SSOP
LTC3708 Fast 2-Phase, No R
SENSE
Buck Controller with Constant On-Time Dual Controller, V
IN
Up to 36V, Very Low
Output Tracking Duty Cycle Operation, 5mm × 5mm QFN Package
LTC3717 High Power DDR Memory Termination Regulator 4V ≤ V
IN
≤ 36V, V
OUT
Tracks V
IN
or V
REF
, I
OUT
from 1A to 20A
LTC3728/LTC3728L Dual, 550kHz, 2-Phase Synchronous Step-Down Constant Frequency, V
IN
to 36V, 5V and 3.3V LDOs,
Switching Regulator 5mm × 5mm QFN or 28-Lead SSOP
LTC3736 Dual, 2-Phase, No R
SENSE
, Synchronous Controller V
IN
: 2.75 to 9.8V, I
OUT
up to 5A, 4mm x 4mm QFN Package
with Output Tracking
LTC3736-1 Dual, 2-Phase, No R
SENSE
, Synchronous Controller V
IN
: 2.75 to 9.8V, Spread Spectrum Operation, Output Voltage
with Spread Spectrum Tracking, 4mm x 4mm QFN Package
LTC3737 Dual, 2-Phase, No R
SENSE
, Controller V
IN
: 2.75 to 9.8V, I
OUT
up to 5A, 4mm x 4mm QFN Package
with Output Tracking
LTC3831 High Power DDR Memory Termination Regulator V
OUT
Tracks 1/2 V
IN
or V
REF
, 3V ≤ V
IN
≤ 8V, I
OUT
from 1A to 20A
No R
SENSE
is a trademark of Linear Technology Corporation.
LT 0807 REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2005
RELATED PARTS
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
TYPICAL APPLICATIO
U
2-Phase, Spread Spectrum, DDR Memory Supplies with Ceramic Output Capacitors
SGND
PLLLPF
IPRG2
IPRG1
V
FB1
I
TH1
SW1
R
VIN
10Ω
2200pF
R
ITH2
6.2k
C
ITH2
2.2nF
C
SS
10nF
C
IN
22μF
C
VIN
1μF
V
IN
3.3V
V
IN
C
ITH2A
330pF
R
ITH1
22k
C
ITH1
1000pF
C
ITH1A
100pF
R
FB1B
187k
R
FB1A
59k
PGOOD
V
FB2
V
REF
PGND
I
TH2
TG2
LTC3776EUF
PGND
TG1
SYNC/SSEN
BG1
PGND
22
21
20
19
18
17
16
15
14
13
12
11
10
25
23
24
1
2
3
4
5
9
8
7
6
SENSE1
+
MP1
FDC638P
MP2
FDC638P
L1
2.2μH
L2
2.2μH
MN1
FDC637N
MN2
FDC637N
RUN/SS
BG2
PGND
SW2
SENSE2
+
C
OUT2
47μF
C
OUT1
47μF
V
DDQ
2.5V
2A
V
TT
1.25V
±2A
3776 TA02
L1, L2: VISHAY IHLP-2525CZ-01
