SMD Type
Integrate Circuit
Critical Conduction GreenLine SMPS Controller
MC33364
■ Features
● Lossless Off-Line Startup
● Leading Edge Blanking for Noise Immunity
● Watchdog Timer to Initiate Switching
● Operating Temperature Range -25℃to +125℃
● Shutdown Capability
● Over Temperature Protection
● Optional/Adjustable Frequency Clamp to Limit EMI
SOP-8
Unit: mm
■ Functional Block Diagram
Vref
Vcc
ZCD
FB
Vref regulator
Startup
turn on
UVLO +
−
turn on
Vref
10V
5k
45k
15V/ 8.1V
−
+
1.2V/ 1.0V
15k
Thermal
Shutdown
Watchdog
Timer
CS
LEB
FC
−
+
0.1V
R
RQ
S
Frequency Clamp
Line
Vref
Vcc
UVLO
+
−
15V/ 7.6V
UVLO
+
−
Reset
15V/ var
Vcc
Level
SNA
Gate
P Gnd
A Gnd
Zero Current 1
Current Sense 2
Voltage FB 3
8 Line
7 VCC
6 Gate Drive
Vref 4
5 GND
(Top View)
■ Absolute Maximum Ratings Ta = 25℃
Parameter
Power Supply Voltage (Operating)
Line Voltage
Current Sense, Compensation,Voltage Feedback,
Restart Delay and Zero Current Input Voltage
Zero Current Detect Input
Restart Diode Current
Maximum Power Dissipation @ TA = 70℃
Thermal Resistance, Junction?to?Air
Operating Junction Temperature
Operating Ambient Temperature
Storage Temperature Range
Symbol
VCC
Vline
Vin1
Iin
Iin
PD
RθJA
TJ
TA
Tstg
Rating
16
700
-1.0 to +10
±5.0
5.0
550
145
150
-25 to +125
-55 to +150
Unit
V
V
V
mA
mA
mW
℃/W
℃
℃
℃
1
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