Datasheet

LTC3876
48
3876f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
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www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2011
LT 1111 • PRINTED IN USA
TYPICAL APPLICATION
4.5V to 5.5V Input, VDDQ 1.5V/20A and VTT 0.75V/±10A Output, 1.2MHz, R
SENSE
, Step-Down Converter
PART NUMBER DESCRIPTION COMMENTS
LTC3776 Dual, 2-Phase, No R
SENSE
™, Synchronous Controller for
DDR/QDR Memory Termination
2.75V ≤ V
IN
≤ 9.8V, V
OUT
Tracks One-Half V
REF
, 4mm × 4mm QFN-24, SSOP-24
LTC3717 High Power DDR Memory Termination Regulator 4V ≤ V
IN
≤ 36V, V
OUT
Tracks One-Half V
IN
or V
REF
LTC3718 Bus Termination Supply for Low Voltage V
IN
1.5V ≤ V
IN
, Supplies 5V Gate Drive for N-Channel MOSFETs
LTC3831 High Power DDR Memory Termination Regulator V
OUT
Tracks One-Half V
IN
or V
REF
, 3V ≤ V
IN
≤ 8V
LTC3413 3A Monolithic DDR Memory Termination Regulator 2.25V ≤ V
IN
≤ 5.5V, TSSOP-16E
LTC3833 Fast Controller On-Time, High Frequency Synchronous
Step-Down Controller with Diff Amp
Up to 2MHz Operating Frequency 4.5V < V
IN
< 38V, 0.6V < V
OUT
< 5.5V,
3mm × 4mm QFN-20, TSSOP-20E
LTC3838 Dual, Fast, Accurate Step-Down DC/DC Controller with
Differential Output Sensing
Up to 2MHz Operating Frequency 4.5V < V
IN
< 38V, 0.6V < V
OUT
< 5.5V,
5mm × 7mm QFN-38, TSSOP-38E
LTC3634 15V Dual 3A Monolithic DDR Memory Termination 3.6V ≤ V
IN
≤ 15V, 4mm × 5mm QFN-28, TSSOP-28E
LTC3617 6A Monolithic DDR Memory Termination 2.25V ≤ V
IN
≤ 5.5V, 3mm × 5mm QFN-24
LTC3618 Dual 3A Monolithic DDR Memory Termination 2.25V ≤ V
IN
≤ 5.5V, 4mm × 4mm QFN-24, TSSOP-24
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OUT4
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VTT
0.75A
±10A
100
100
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0.01µF
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20A
V
IN
4.5V TO 5.5V
100
100
20k
SENSE1
–
SENSE1
+
BOOST1
TG1
SW1
SENSE2
+
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TG2
SW2
DRV
CC1
INTV
CC
DRV
CC2
EXTV
CC
V
IN
DB1
MT1
R31
0.002
SENSE2
–
BG1 BG2
VTTRVCC
PGND
V
OUTSENSE1
+
VDDQSNS
V
OUTSENSE1
–
PGOOD VTTR
VTTSNS
TRACK/SS1
ITH1
DTR1
V
RNG1
ITH2
CVCC
PHASMD
MODE/PLLIN
CLKOUT
V
RNG2
SGND
RUN
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1µF
C
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w3
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180µF
2.2µF
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, C
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, C
OUT3
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DB1, DB2: CENTRAL SEMI CMDSH-3
L1: TOKO FCUL1040-H-R18M
L2: TOKO FDUE0640-R22M
MT1, MB1, MB2:INFINEON BSC0901NS
MT2: INFINEON BSC050NE2LS
649