تراشه PWM کنترلر UC3842 پکیج DIP
Description
The UC3842/UC3843/UC3844/UC3845 are fixed frequencycurrent-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator and a high current totempole output for driving a Power MOSFET.
The UC3842 and UC3844 have UVLO thresholds of 16V (on) and 10V (off). The UC3843 and UC3845 are 8.5V(on) and 7.9V (off). The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844 and UC3845 can operate with 50% duty cycle.
Features
Low Start up Current
Maximum Duty Clamp
UVLO With Hysteresis
Operating Frequency up to 500KHz
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حافظ شیر محمدلی | حدود 1 سال قبل سلام، لطفا UC3844 هم موجود کنید، و همینطور از تمام قطعات UC384x نوع SMD هم موجود کنید.
با تشکر. -
محمد میراسمعیلی | بیش از 2 سال قبل لطفا مدل اس ام دی 3843 و 3843 را هم موجود کنید در بیشتر بردهای جدید آی سی ها اس ام دی شده مانند ماژول 3011015005