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3521 Datasheet(PDF) 3 Page - Unisonic Technologies

Part # 3521
Description  PWM CONTROLLER WITH SUPERVISORY CIRCUIT FOR SWITCHING POWER SUPPLY
PDF  5 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

3521 Datasheet(HTML) 3 Page - Unisonic Technologies

  3521 Datasheet HTML 1Page - Unisonic Technologies 3521 Datasheet HTML 2Page - Unisonic Technologies 3521 Datasheet HTML 3Page - Unisonic Technologies 3521 Datasheet HTML 4Page - Unisonic Technologies 3521 Datasheet HTML 5Page - Unisonic Technologies  
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3521
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
3 of 5
www.unisonic.com.tw
QW-R502-034,B
BLOCK DIAGRAM
(1)
(2)
(3)
OV
V12
UVP
36ms
Delay
4.5 ms
Delay
CT
VADJ
OPOUT
C1
C2
PG
TPG
V33
V5
1.25V
0.625V
(4)
PT
(9) REM
(6)
(16)
(15)
(14)
OPNEGIN
(10)
(11)
(7)
(8)
IN
UV
UV
UV
+
-
+
-
+
-
+
-
OV
+
-
OV
+
-
OV
+
-
OVP
250ms delay
OUT
CLR
S
R
QN
+
-
+
-
DET
0. 625V
(12)
OSC
CLR
+
-
2.45V
+
-
+
-
Q
C N
DETCMP
DEAD TIME CONTROLER
PWM
PWMCMP
ERROR AMP
4k
REMONF
REMON
QOUT
0.4V
CONTROL
D
Q
Q



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