LTC3617_15 Datasheet, PDF (20/20 Pages) Linear Technology – 6A Monolithic Synchronous Step-Down Regulator for DDR Termination

LTC3617
Typical Application
V_IN
2.25V TO 5.5V
R_C
6k
C_C
2.2nF
22µF
×4
VDDQ
1.8V
R2
100k
PGOOD
C_C1
10pF
L1: COILCRAFT D03316T
DDR2 Termination, 1MHz
SV_IN PV_IN
RUN
VTTR
VDDQIN
RT
R1
365k
LTC3617
SW
PGOOD
ITH
SYNC
SGND
PGND
V_FB
L1
0.33µH
3617 TA04a
V_REF
0.9V
0.1µF ^±10mA
100µF
VTT
0.9V
47µF ^±6A
500mV/DIV
External Start-Up
VDDQ
V_REF/VTT
400µs/DIV
3617 TA04b
Related Parts
PART NUMBER
LTC3616
LTC3612
LTC3418
LTC3415
LTC3416
LTC3413
LTC3412A
DESCRIPTION
5.5V, 6A (I_OUT) 4MHz Synchronous Step-Down DC/DC
Converter
5.5V, 3A (I_OUT), 4MHz, Synchronous Step-Down DC/DC
Converter
5.5V, 8A (I_OUT), 4MHz, Synchronous Step-Down DC/DC
Converter
5.5V, 7A (I_OUT), 1.5MHz, Synchronous Step-Down DC/DC
Converter
5.5V, 4A (I_OUT), 4MHz, Synchronous Step-Down DC/DC
Converter
5.5V, 3A (I_OUT Sink/Source), 2MHz, Monolithic Synchronous
Regulator for DDR/QDR Memory Termination
5.5V, 2.5A (I_OUT), 4MHz, Synchronous Step-Down DC/DC
Converter
COMMENTS
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
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
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
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
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
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
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
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3617fa
LT 0711 REV A • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2011