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| LTC3618_15 Datasheet, PDF (20/24 Pages) Linear Technology – Dual 4MHz, 3A Synchronous Buck Converter for DDR Termination | |||
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LTC3618
Typical Applications
External Compensation, Forced Continuous Operation,
In-Phase Switching, Common PGOOD Output
VIN
3.3V
47µF
47µF
1µF
RC1
15.8k
CC1
470pF
10pF
RT
178k
0.01µF
PGOOD
100k
RC2
6.81k
CC2
680pF
10pF
SVIN (2Ã) PVIN1 (2Ã) PVIN2
RUN1
VDDQIN
TRACK/SS1
PGOOD1
ITH1
LTC3618
(2Ã) SW1
FB1
RT
0.47µH
VTTR
MODE/SYNC
PHASE
RUN2
(2Ã) SW2
0.47µH
FB2
PGOOD2
ITH2 SGND
PGND
3618 TA02a
10pF R1
845k
R2
422k
VDDQ
1.8V/±3A
47µF
VTT
0.9V/±3A
47µF
Load Step Transient VDDQ
VOUT
200mV/DIV
Load Step Transient VTT
VOUT
100mV/DIV
IL
1A/DIV
VIN = 3.3V
VOUT = 1.8V
ILOAD = 200mA TO 2A
3618 TA02b
IL
1A/DIV
VIN = 3.3V
VOUT2 = 0.9V
ILOAD = â1A TO 1A
3618 TA02c
3618fc
20
For more information www.linear.com/LTC3618
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