ltc3717-1 Linear Technology Corporation, ltc3717-1 Datasheet - Page 20

• Manufacturer Part Number: ltc3717-1
• Description: Wide Operating Range, No Rsense Step-down Controller For Ddr/qdr Memory Termination
• Manufacturer: Linear Technology Corporation

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