Datasheet

LTC3617
20
3617fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2011
LT 0711 REV A • PRINTED IN USA
relateD parts
typical application
DDR2 Termination, 1MHz
External Start-Up
PART NUMBER DESCRIPTION COMMENTS
LTC3616 5.5V, 6A (I
OUT
) 4MHz Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN(MIN)
= 2.25V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.6V,
I
Q
= 70µA, I
SD
< 1µA, 3mm × 5mm QFN24 Package
LTC3612 5.5V, 3A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN(MIN)
= 2.25V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.6V,
I
Q
= 70µA, I
SD
<1µA, 3mm × 4mm QFN-20 TSSOP20E Package
LTC3418 5.5V, 8A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN(MIN)
= 2.25V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.8V,
I
Q
= 380µA, I
SD
<1µA, 5mm × 7mm QFN-38 Package
LTC3415 5.5V, 7A (I
OUT
), 1.5MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN(MIN)
= 2.5V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.6V,
I
Q
= 450µA, I
SD
<1µA, 5mm × 7mm QFN-38 Package
LTC3416 5.5V, 4A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN(MIN)
= 2.25V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.8V,
I
Q
= 64µA, I
SD
<1µA, TSSOP20E Package
LTC3413 5.5V, 3A (I
OUT
Sink/Source), 2MHz, Monolithic Synchronous
Regulator for DDR/QDR Memory Termination
90% Efficiency, V
IN(MIN)
= 2.25V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= V
REF
/2,
I
Q
= 280µA, I
SD
<1µA, TSSOP16E Package
LTC3412A 5.5V, 2.5A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V
IN(MIN)
= 2.5V, V
IN(MAX)
= 5.5V, V
OUT(MIN)
= 0.8V,
I
Q
= 60µA, I
SD
<1µA, 4mm × 4mm QFN-16 TSSOP16E Package
RUN
VDDQIN
RT
PGOOD
ITH
PGOOD SGND
PGND
V
IN
2.25V TO 5.5V
VDDQ
1.8V
VTTR
SV
IN
LTC3617
SW
PV
IN
L1
0.33µH
3617 TA04a
SYNC
V
FB
100µF 47µF
C
C1
10pF
22µF
×4
C
C
2.2nF
VTT
0.9V
±6A
0.1µF
V
REF
0.9V
±10mA
R2
100k
R1
365k
L1: COILCRAFT D03316T
R
C
6k
500mV/DIV
400µs/DIV
3617 TA04b
VDDQ
V
REF
/VTT