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LTC3735 Datasheet, PDF (9/32 Pages) Linear Technology – 2-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs | |||
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FUNCTIONAL DIAGRAM
R3
R4
MCH_PG
RDPSLP
STP_CPUB
LTC3735
R6
RDPRSLP
DPRSLPVR
R5
RBOOT
FREQSET
OSCILLATOR
CLK1
CLK2
TO SECOND
CHANNEL
DUPLICATE FOR SECOND
CONTROLLER CHANNEL
COMPOSITE PG
DELAY
MD
BOOST
STP_CPUB DPRSLPVR VID CHANGE
PGOOD
110µs BLANKING
RUN
VOA+
R2
VOAâ
R1
OAOUT
A1
+
â
0.66V
VFB
0.54V
DROP
OUT
DET
SQ
RQ
BOT PSI
TOP ON
TG
TOP
SW
SWITCH
LOGIC
PVCC
BG
BOT
DPRSLPVR
PGND
SHDN
I1
â+
â I2
+
PVCC
36k SENSE+
3V
0.5µA
PSIB
0.60V
+
PSI
â
VREF
5.33(VFB)
SLOPE
COMP
PVCC
5V
+
SGND
RATTEN
5.33k
DPRSLPVR
MD
VID CHANGE
1.5µA
6V
6-BIT VID DECODER
54k
SHDN
RST
5.33(VFB)
36k SENSEâ
54k
2.4V
EA
OV
VFB
0.60V
0.66V
ITH
RUN
SOFT-
START
RUN/SS
RUN
1.5V
PVCC
VIN
DB
CB
+
D1
CIN
COUT
L
RSENSE
VFB
CC
CC2 RC
CSS
VOUT
RVID
VID0 VID1 VID2 VID3 VID4 VID5
3735 FD
3735fa
9
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