MM3663

For AC-DC control ICs, MinebeaMitsumi offers primary side control ICs that support PWM + QR combined control, and secondary side synchronous rectification control ICs that can dynamically change the timing off. The MM3663 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.

MM3663 features :

• The startup circuit, using a 500V high breakdown process, reduces startup circuit loss
• Current mode PWM controller (select function of maximum oscillating frequency, 66kHz or 100kHz)
• Frequency reduction function in load of middle range improve average efficiency
• Low voltage of UVLO and low supply current in oscillation stop reduce standby power more
• Burst operation function at light load
• Overcurrent protection function (adjusted to the two-step process according to changes in the input)
• Various built-in protection functions (soft start, overcurrent protection, overload protection, overvoltage protection, external latch protection)
• Operational interaction function with the PFC circuit (X rank)
• Package SOP-8J / SOP-10A

MM3661 applications :

• Flat panel TV
• Game equipment
• AC/DC adapters
• Various power supplies

The MinebeaMitsumi brand controllers are made in Japan and are of impeccable quality. They will be perfectly adapted for your applications.