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MC44605

Features: Current or Voltage Mode Controller• Current Mode Operation Up to 250 kHz Output Switching Frequency• Inherent Feed Forward Compensation• Latching PWM for CyclebyCycle Current Limiting• Oscillator with Precise Frequency Control• Externally Programmable Refere...

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SeekIC No. : 004415997 Detail

MC44605: Features: Current or Voltage Mode Controller• Current Mode Operation Up to 250 kHz Output Switching Frequency• Inherent Feed Forward Compensation• Latching PWM for CyclebyCycle Cur...

MC44605 Data Sheet

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Part Number:
MC44605
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/27

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Product Details

Description



Features:

Current or Voltage Mode Controller
• Current Mode Operation Up to 250 kHz Output Switching Frequency
• Inherent Feed Forward Compensation
• Latching PWM for CyclebyCycle Current Limiting
• Oscillator with Precise Frequency Control
• Externally Programmable Reference Current
• Secondary or Primary Sensing (Availability of Error Amplifier Output)
• Synchronization Facility
• High Current Totem Pole Output
• Undervoltage Lockout with Hysteresis
• Low Output dV/dT for Low EMI
• Low Startup and Operating Current

Safety/Protection Features
• SoftStart Feature
• Demagnetization (Zero Current Detection) Protection
• Overvoltage Protection Facility Against Open Loop
• EHT Overvoltage Protection (E.H.T.OVP): Protection Against Excessive Amplitude Synchronization Pulses
• Winding Short Circuit Detection (W.S.C.D.)
• Limitation of the Maximum Input Power (M.P.L.): Calculation of Input Power for Overload Protection
• Over Heating Detection (O.H.D.): to Prevent the Power Switch from Excessive Heating

Latched Disabling Mode
• When one of the following faults is detected: EHT overvoltage, Winding Short Circuit (WSCD), excessive
   input power (M.P.L.), power switch over heating (O.H.D.), a counter is activated
• If the counter is activated for a time that is long enough, the circuit gets definitively disabled. The latch
  can only be reset by removing and then reapplying power


Pinout

Connection Diagram


Description

The MC44605 is a high performance current mode controller that is specifically designed for offline converters. The MC44605 has several distinguishing features that make it particularly suitable for multisynchronized monitor applications.

The MC44605 synchronization arrangement enables operation from 16 kHz up to 130 kHz. MC44605 was optimized to operate with universal ac mains voltage from 80 V to 280 V, and its high current totem pole output makes it ideally suited for driving a power MOSFET.

The MC44605 protections provide well controlled, safe power management. Safety enhancements detect four different fault conditions and provide protection through a disabling latch.




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