LTC3735 LINER [Linear Technology], LTC3735 Datasheet - Page 9

• Manufacturer Part Number: LTC3735
• Description: 2-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs
• Manufacturer: LINER [Linear Technology]

FUNCTIONAL DIAGRAM
R3
RUN
FREQSET
PGOOD
STP_CPUB
R2
R1
5V
+
110µs BLANKING
OSCILLATOR
DPRSLPVR
OAOUT
SGND
V
V
PV
PSIB
OA
OA
CC
+
–
0.5µA
VID CHANGE
R
5.33k
ATTEN
3V
CLK1
CLK2
TO SECOND
CHANNEL
0.60V
R
MCH_PG
VID
+
–
DPRSLPVR
MD
A1
–
+
VID CHANGE
–
+
–
+
V
REF
VID0
PSI
R4
0.66V
V
0.54V
RDPSLP
FB
VID1
6-BIT VID DECODER
DUPLICATE FOR SECOND
CONTROLLER CHANNEL
VID2
VID3
6V
STP_CPUB
5.33(V
1.5µA
VID4
FB
SLOPE
COMP
)
I
S
R
1
VID5
–
+
Q
Q
–
DROP
OUT
DET
54k
5.33(V
+
SHDN
COMPOSITE PG
RST
+
FB
)
RUN
BOT
DPRSLPVR
R6
RDPRSLP
TOP ON
–
SHDN
PSI
START
SOFT-
54k
RUN
OV
–
+
2.4V
EA
I
2
SWITCH
–
+
+
–
+
–
LOGIC
DELAY
V
FB
0.60V
0.66V
1.5V
DPRSLPVR
TOP
BOT
PV
CC
PV
36k
36k
CC
SENSE
SENSE
BOOST
RUN/SS
PGND
SW
TG
BG
R5
I
TH
MD
RBOOT
+
–
PV
CC
C
C
D
C2
C
C
B
B
L
C
R
V
SS
C
LTC3735
IN
V
FB
D1
R
SENSE
+
C
IN
3735fa
9