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MJ50BK100

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File Size : 116 KB Manufacturer:72 Description:With outputting burst switching control pulse from IC, burst enegize of the TRANS is carried out. Voltage stabilized also at the time of a light load can be supplied. It is the optimum IC for constituting the power-supply system for minute electric-power supply. By this IC, the burst time of switching control pulse is decided by level of output ripple of a power-supply system. As for the terminal 4 which is carrying out the monitor of the power-supply output-voltage value, another side is connected to the comparator. The standard voltage value of this comparator has hysterisis, 2.5 V and 3 V fixation. (inside IC) Since output DC voltage of a power supply is stabilized, power-supply output voltage is detected and it feedbacks for the terminal 4 (FB IN terminal). When the voltage value of a terminal 4 tends to become more than 3 V, switching control pulse of a terminal 7 (pulse out) is stopped. If pulse is stooped, in order not to control power-supply TRANS, it will stop supplying energy supplied to the output of a power supply, and the output DC voltage of a power-supply will descend. If output DC voltage tends to become less than (V/2.5), switching control pulse of a terminal 7 (pulse out) will be outputted. Power-supply TRANS is made to drive and PULSE supplies energy to a power-supply output. Then, output DC voltage rises. Burst electric supply is realized by repeating the above-mentioned operation.


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