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UCC3818
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UCC3818

  • Category:ACDC- and -DCDC-power supply
  • Product Name:BiCMOS power factor preregulator
  • Manufacturers:TI
  • Production Batch Number:09+
  • Encapsulation:16PDIP, 16SOIC, 16TSSOP
  • Stock Status:There is stock
  • Stock Quantity:4680
  • Minimum order quantity: 1
  • Details:Click here to find PDF information on UCC3818
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  • Product introduction

The UCCx817/18 Series provides all the features necessary for active power factor correction preregulators. The controller realizes that by shaping the AC input current waveform, the corresponding AC input line voltage, the power factor is close. Average current mode control maintains stable, low-distortion sinusoidal line current.

Designed in Texas Instruments' BiCMOS process, the UCC2817/UCC2818 provide new features such as low start-up current, reduced power consumption, overvoltage protection, undervoltage lockout detection shunt circuit, leading modulation techniques to reduce bulk capacitance with ripple current through improved, low-offset (± 2 millivolt) current amplifiers to reduce distortion under light load conditions.

characteristic
  • Controls the boost preregulator to near power factor
  • Distortion of the boundary
  • World Wide network cable runs
  • Overvoltage protection
  • Precise power limiting
  • Average current mode control
  • Improved immunity to interference
  • Improved feed-forward line adjustment
  • Leading edge modulation
  • Typical start-up current of 150μA
  • Low-power BiCMOS operation
  • 12 V to 17 V operation
  • The frequency range is 6 kHz to 220 kHz

parameter

 
    UCC3818
On/Off of Undervoltage Lockout Threshold (5)   10.5/10
Operating power supply (max) (5)   18
Starting current (mA)   0.15
Operating Supply Current (mA)   4
Vref's (V)   7.5
Thor of Vref (%)   1.5
Duty cycle (max.) (%)   100
Actual operating frequency (max) (MHz)   0.25
Pins/Packets   16PDIP,16SOIC,16TSSOP

 

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