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• IC Block Diagram
COM
VREF
START
TE
L 13942296513
www
.
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IC601 LB1674V-TLM (SUFFIX-21)
V
1
DW
2
W
3
GND
4
OSC
5
6
DR
7
8
POWER
9
REF.V
BIAS
SPEED
VSP
10
DETECT
IN+
11
OUT
12
START
CURRENT
DETECT
DETECT
x
ao
y
i
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8
OSC
PRE DRIVER
SOFT SW
CHANGE CURRENT,
START LOGIC
Q Q
3
6 7
1 3
u163
.
– 13 –
2 9
9 4
2 8
24 DV
23 U
22 DU
21 GND
20 VCC
19 FC
18 PV
17 PU
16 PW
15 TC2
14 TC1
13 RI
1 5
0 5
8
2 9
9 4
m
co
9 9
2 8
9 9
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