Datasheet

LTC3616
28
3616fc
For more information www.linear.com/LTC3616
 LINEAR TECHNOLOGY CORPORATION 2010
LT 0414 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com/LTC3616
relaTeD parTs
Typical applicaTion
DDR Termination With Ratiometric Tracking of V
DD
, 1MHz
Ratiometric Start-Up
PART NUMBER DESCRIPTION COMMENTS
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
LTC3414/
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
= 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
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
RUN
TRACK/SS
RT/SYNC
PGOODPGOOD
SGND
PGND
V
IN
3.3V
V
DD
1.8V
SRLIM/DDR
SV
IN
LTC3616
SW
PV
IN
L1
0.33µH
R1
200k
C3
22pF
R2
200k
3616 TA04a
MODE V
FB
C4
100µF
C5
47µF
C
C1
10pF
C1
22µF
×4
C
C
2.2nF
V
TT
0.9V
±3A
R3
100k
R8
365k
R5
1M
L1: COILCRAFT DO3316T
R4
1M
R
C
6k
R7
187k
R6
562k
ITH
500mV/DIV
500µs/DIV
3616 TA04b
V
DD
V
TT