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IC BLOCK DIAGRAM & DESCRIPTION
U0803 41LV16256-35T(DRAM)
CAS
RAS
RAS
CLOCK
GENERATOR
CAS
CLOCK
GENERATOR
WE
CONTROL
LOGICS
OE
CONTROL
LOGIC
REFRESH
COUNTER
ADDRESS
BUFFERS
ROW DECODER
DA
T
A
I/O BUFFERS
MEMORY ARRAY
262,144 x 16
SENSE AMPLIFIERS
COLUMN DECODERS
DATA I/O BUS
OE
27
OE
13
WE
29
LCAS
28
UCAS
14
RAS
16~19,
22~26
A0-A8
2~5,
7~10,
31~34,
36~39
I/O0-
I/O15
IC102 SFH615A-3(OP. SENSOR)
1
2
4
3
Anode
Collector
Cathode
Emitter
U0902,U0903 B1117N(REGULATOR)
2
1
3
4
8
7
6
5
8-Pin Sur face M ount
Top View
ADJ
OUT
OUT
N.C.
IN
NC
2
1
3
4
8
7
6
5
8-Pin Sur face M ount
Top View
IN
IN
2
1
3
4
8
7
6
5
8-Pin Sur face M ount
Top View
ADJ
OUT
OUT
N.C.
IN
NC
2
1
3
4
8
7
6
5
8-Pin Sur face M ount
Top View
IN
IN
Front
TO-252
ADJ/GN
V
IN
V
OUT
1
2
3
IN
OUT
Adj/GND
Tab V
OUT
Fr ont View
SOT
-
223
IN
OUT
Adj/GND
Tab V
OUT
Fr ont View
SOT
-
223
V
POWER
OUTPUT
1
2
3
4
5
V
CONTROL
ADJ/GND.
SENSE
TO-263-5 Package
V
POWER
V
POWER
OUTPUT
1
2
3
4
5
V
CONTROL
V
CONTROL
ADJ/GND.
SENSE
TO-263-5 Package
Ta b V
OUT
SOT -223
V
OUT
Front View
SOT -223-5
4
1
5
2
3
#1 Se nse
#2 Adj/GND
#3 O UT
#4 C ont rol
#5 V
IN
V
OUT
SOT -223
V
OUT
Front View
SOT -223-5
4
1
5
2
3
#2 Adj/GND
#3 O
#5 V
IN
U0901 FS8860(REGULATOR)
Thermal
Protection
Shutdown
Logic
Current Limit
1.25V
Bandgap
Reference
IN
OUT
GND
R1
R2
IC101 KA5M02659(POWER SW)
uA
V
CC
32
V
5
A
5V
2.
5R
1R
1m
A
0.
1V
+
OV
E
R
VO
L
T
A
G
E S
/D
+
7.
5V
27V
Th
er
mal
S
/D
S
R
Q
Po
w
er
o
n
re
se
t
+
L.
E
.B
S
R
Q
OS
C
5V
Vre
f
In
te
rn
al
bi
as
Go
od
lo
g
ic
SF
ET
DR
A
IN
GN
D
FB
So
ft
St
ar
t
9V
