3728L1 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'3728L1' PDF : 32 Pages View PDF
LTC3728L-1
FUNCTIONAL DIAGRAM
PLLIN
FIN
50k
PLLFLTR
RLP
CLP
PGOOD
PHASE DET
DUPLICATE FOR SECOND
CONTROLLER CHANNEL
INTVCC
VIN
BOOST
DB
OSCILLATOR
CLK1
CLK2
0.86V
VOSENSE1
0.74V
0.86V
VOSENSE2
DROP
OUT
DET
SQ
RQ
BOT FCB
TOP ON
TG
TOP
SW
SWITCH
LOGIC
INTVCC
BG
BOT
0.55V
+B
–
SHDN
PGND
CB
+
D1
CIN
COUT
+
RSENSE
INTVCC
3V
0.18μA
R6
FCB
R5
4.5V –
+
+
–
0.74V
BINH
FCB
3.3VOUT
0.8V
VREF
VIN
VIN
EXTVCC
4.8V +
–
INTVCC
5V
+
SGND (UH PACKAGE PAD)
5V
LDO
REG
INTERNAL
SUPPLY
I1
I2
–
– ++ –
+
0.86V
3mV
4(VFB)
SLOPE
COMP
45k
45k
2.4V
EA
OV
INTVCC
30k SENSE+
30k SENSE–
VFB
0.80V
VOSENSE
1.2μA
6V
0.86V
SHDN
RST
4(VFB)
RUN
SOFT
START
ITH
RUN/SS
R2
R1
CC
CC2
RC
CSS
VOUT
3728L1 F02
Figure 2
3728l1fc
9
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