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 POWER SUPPLY ICs
ICS
The PWM control IC for AC-DC converter
Monolithic IC MM3663 Series
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[Outline]
This IC is the current mode PWM controller IC, designed for flyback converter. This IC can substantially reduce standby power by the start up circuit using the 500V high breakdown process, burst mode operating in low load, and optimization of supply current. Frequency reduction function in load of middle range and minimum frequency limit function prevent chattering noise in low load, and improve average efficiency. Select function of maximum frequency (66kHz or 100kHz) and adjustment function of FB pin voltage for oscillation stop which is innovation expand flexibility of the power supply design. Others, frequency jittering function, X capacitor discharge function make the measures of EMI easy. The M3663 which has various protection functions can assist safety design of power supply.


[Features]
1.Start up circuit by 500V high breakdown process reduce start up circuit loss.
2.Current mode PWM controller (select function of maximum oscillating frequency, 66kHz or 100kHz)
3.Frequency reduction function in load of middle range improve avearge efficiency.
4.Low voltage of UVLO and low supply current in oscillation stop reduce standby power more.
5.Noise diffusion, downsize filter by frequency jitter function in all range.
6.X capacitor discharge function which don't increase standby power can make the measures of EMI easy.
7.Seam of burst mode and continuous oscillation mode can be arbitrarily adjusted.Balance adjustment
 between standby power and output ripple.
8.Input voltage correction function of load current in over current protection realize flat correction
 characteristics.
9.Substantial protection functions included, current detect pin open detection, auxiliary winding short
 detection, and so on.
10.The CB certification in the X capacitor discharge function is acquired.
 [IEC60065, IEC60950-1, IEC62368-1]


[Package]


[Applications]
1. Flat panel TV
2. DVD Player, BD Player, BD Recorder
3. Printer, Copying Machine, FAX
4. AC/DC Adapters
5. Various Power Supplies


[Pin Assignment]

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SOP-8J
(TOP VIEW)
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1
ADJ
2
FB
3
CS
4
GND
5
GATE
6
VDD
7
N.C.
8
HV


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[NOTE]
-Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
-The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
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