20
LTC3717-1
sn37171 37171fs
PART NUMBER DESCRIPTION COMMENTS
LTC1625/LTC1775 No R
SENSE
TM
Current Mode Synchronous Step-Down Controller 97% Efficiency; No Sense Resistor; 99% Duty Cycle
LTC1628-PG Dual, 2-Phase Synchronous Step-Down Controller Power Good Output; Minimum Input/Output Capacitors;
3.5V ≤ V
IN
≤ 36V
LTC1628-SYNC Dual, 2-Phase Synchronous Step-Down Controller Synchronizable 150kHz to 300kHz
LTC1709-7 High Efficiency, 2-Phase Synchronous Step-Down Controller Up to 42A Output; 0.925V ≤ V
OUT
≤ 2V
with 5-Bit VID
LTC1709-8 High Efficiency, 2-Phase Synchronous Step-Down Controller Up to 42A Output; VRM 8.4; 1.3V ≤ V
OUT
≤ 3.5V
LTC1735 High Efficiency, Synchronous Step-Down Controller Burst Mode
TM
Operation; 16-Pin Narrow SSOP;
3.5V ≤ V
IN
≤ 36V
LTC1736 High Efficiency, Synchronous Step-Down Controller with 5-Bit VID Mobile VID; 0.925V ≤ V
OUT
≤ 2V; 3.5V ≤ V
IN
≤ 36V
LTC1772 SOT-23 Step-Down Controller Current Mode; 550kHz; Very Small Solution Size
LTC1773 Synchronous Step-Down Controller Up to 95% Efficiency, 550kHz, 2.65V ≤ V
IN
≤ 8.5V,
0.8V ≤ V
OUT
≤ V
IN
, Synchronizable to 750kHz
LTC1778/LTC3778 Wide Operating Range, No R
SENSE
Step-Down Synchronous Controllers 4V ≤ V
IN
≤ 36V, True Current Mode Control,
2% to 90% Duty Cycle
LTC1874 Dual, Step-Down Controller Current Mode; 550kHz; Small 16-Pin SSOP, V
IN
< 9.8V
LTC1876 2-Phase, Dual Synchronous Step-Down Controller with 2.6V ≤ V
IN
≤ 36V, Power Good Output,
Step-Up Regulator 300kHz Operation
LTC3413 Monolithic DDR Memory Termination Regulator 90% Efficiency, ±3A Output, 2MHz Operation
LTC3717 Wide Operating Range, No R
SENSE
Step-Down Synchronous Controllers 4V ≤ V
IN
≤ 36V, True Current Mode Control,
for DDR Memory Termination 2% to 90% Duty Cycle, 16-Pin SSOP, No R
SENSE
Burst Mode is a registered trademark of Linear Technology Corporation.
LINEAR TECHNOLOGY CORPORATION 2003
LT/TP 0603 1K • PRINTED IN USA
RELATED PARTS
U
TYPICAL APPLICATIO
Typical Application 1.25V/±3A at 1.4MHz
RUN/SS
PGOOD
V
RNG
I
TH
SGND
I
ON
V
FB
V
REF
BOOST
TG
SW
PGND
BG
INTV
CC
V
CC
EXTV
CC
LTC3717-1
+
+
M2
1/2 Si9802
M1
1/2 Si9802
L1
0.7µH
C
OUT
120µF
4V
C
IN
120µF
4V
V
IN
2.5V
V
OUT
1.25V
±3A
C
SS
0.1µF
C
C1
470pF
C
ON
,
0.01µF
C
C2
100pF
C
VCC
4.7µF
1µF
C
B
0.22µF
R
C
33k
R
ON
92k
D
B
CMDSH-3
3717 TA03
C
IN
, C
OUT
: CORNELL DUBILIER ESRD121M04B
L1: TOKO A921CY-0R7M
R
PG
100k
5V
SENSE
+
SENSE
–
V
ON
DRV
CC
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
