CURRENT MODE PWM CONTROLLER FEATURES ● Automatic feed forward compensation ● ● ● ● ● Optimized for offline converter Double pulse suppression Current mode operation to 500 KHz High gain totem pole output Internally trimmed bandgap reference Compen sation Voltage Feedback Current Sense RT/CT LM3842A/3A/4A/5A 8 SOP/ 8 DIP PIN Configulation 1 2 3 4 8 7 6 5 VREF Vcc OUTPUT GND ● Undervoltage lockout with hysteresis ● Low start up current :＜ 0.
3 mA ORDERING INFORMATION Device Package 8 SOP 8 DIP DESCRIPTION LM3842A/3A/4A/5A D LM3842A/3A/4A/5A N The LM3842A is fixed frequency current-mode PWM controller.
It is specially designed for Off-Line and DC-to-DC converter applications with minimal ex...

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