LTC3614_15 Datasheet, PDF (30/30 Pages) Linear Technology – 4A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter

LTC3614
Typical Application
DDR Termination With Ratiometric Tracking of V_DD, 1MHz
V_IN
3.3V
C1
22µF
SV_IN
PV_IN
×4
V_DD
1.8V
R6
562k
RUN
TRACK/SS SRLIM/DDR
R3
100k
RT/SYNC
R8
365k
LTC3614
L1
R7
0.33µH
187k
PGOOD
PGOOD
SW
R_C
6k
SGND
C4
100µF
ITH
PGND
C_C
R4
2.2nF
C_C1
10pF
MODE
V_FB
R1
200k
1M
R2
C3
R5
L1: COILCRAFT DO3316T
1M
200k
22pF
3614 TA04a
500mV/DIV
V_TT
0.9V
C5 _±3A
47µF
Ratiometric Start-Up
V_DD
V_TT
500µs/DIV
3614 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, 3A (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
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3614fc
LT 0514 REV C • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2010