UC3845 Current Mode PWM Controller

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Sold By: HatchnHackSKU: B14-04

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The UC3845 fixed frequency current mode controller is specifically designed for off−line and DC−to−DC converter applications offering the designer a cost effective solution with minimal 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 totem pole output ideally suited for driving a power MOSFET.


  • Fixed Frequency Current-Mode PWM Controller
  • Trimmed Oscillator Discharge Current for Precise Duty Cycle Control
  • Current Mode Operation to 500 kHz
  • Automatic Feed Forward Compensation
  • Latching PWM for Cycle−By−Cycle Current Limiting
  • Internally Trimmed Reference with Under voltage Lockout
  • High Current Totem Pole Output
  • Under voltage Lockout with Hysteresis
  • Low Startup and Operating Current 
Part Number  UC3845 
Type PWM Controller
Operation Mode 500KHz
Latching PWM  Cycle By Cycle
Country of Origin China


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