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LM3844A/LM3845A pdf datasheet

  • 资源大小:333
  • 上传时间:2021-06-19
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  • 标      签: lm38

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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● Undervoltage lockout with hysteresis● Low start up current :< 0.3 mA The LM384xA are fixed frequency current-mode PWM controller. They are specially designed for Off-Line andDC-to-DC converter applications with minimal external components.These integrated circuits features a trimmed oscillator for precise duty cycle control, a temperaturecompensated reference, high gain error amplifier, current sensing comparator, and a high currenttotempole output ideally suited for driving a power MOSFET.Protection circuitry includes built in under-voltage lockout and current limiting.
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