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CM3842 - CURRENT MODE PWM CONTROLLER

Features

  • The CM3842/43 are fixed frequency current-mode PWM ! controllers specially designed for OFF-Line switching ! power supply and DC-to-DC converters with a minimum ! number of external components. These devices feature ! a trimmed oscillator for precise duty cycle control, a ! temperature compensated reference, high gain error ! amplifier, current sensing comparator, and high current ! totem pole output which is suitable for driving ! MOSFETs. ! The under voltage lock-out (U. V. L. O. ) is d.

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Datasheet Details

Part number CM3842
Manufacturer Champion
File Size 162.87 KB
Description CURRENT MODE PWM CONTROLLER
Datasheet download datasheet CM3842 Datasheet

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Full PDF Text Transcription

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CM3842/3843 CURRENT MODE PWM CONTROLLER GENERAL DESCRIPTION FEATURES The CM3842/43 are fixed frequency current-mode PWM ! controllers specially designed for OFF-Line switching ! power supply and DC-to-DC converters with a minimum ! number of external components. These devices feature ! a trimmed oscillator for precise duty cycle control, a ! temperature compensated reference, high gain error ! amplifier, current sensing comparator, and high current ! totem pole output which is suitable for driving ! MOSFETs. ! The under voltage lock-out (U.V.L.O.) is designed to operated with 200µA typ. start-up current, allowing an efficient bootstrap supply voltage design. The U.V.L.O. thresholds for the CM3842 are 16V (on) and 10V (off) which are ideal for off-line applications.
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