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LTC3615 Datasheet, PDF (28/32 Pages) Linear Technology – Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter
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LTC3615
Typical Applications
DDR Memory Termination
VIN
3.3V
CIN1
CIN2
CIN3
47µF
47µF
1µF
SVIN (2s) PVIN1 (2s) PVIN2
L1
0.47µH
RUN1
(2s) SW1
VDDQ
1.8V/3A
TRACK/SS1
R1
R3
COUT1
PGOOD1
121k 150k
47µF
R10
15k
C1
10pF
C2
1000pF
R8
174k
ITH1
FB1
RT /SYNC LTC3615
SRLIM
R2
60.4k
R4
49.9k
MODE
L2
R9
0.47µH
VTT
226k
(2s) SW2
0.9V
PHASE
RUN2
FB2
TRACK/SS2
R5
49.9k
R6
3A/–1.5A
COUT2
47µF
PGOOD2
49.9k
R7
15k
C3
10pF
ITH2 SGND PGND
3615 TA03a
C4
1000pF
Ratiometric Start-Up
VDD
500mV/
VTT
DIV
500µs/DIV
3615 TA03b
3615f
28
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