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UC3869 - HIGH VOLTAGE GREEN MODE PWM CONTROLLER

Datasheet Summary

Description

The UTC UC3869 is a highly integrated current mode PWM control IC with high voltage start up, optimized for high performance, low standby power consumption and cost effective offline flyback converter applications.

Features

  • S.
  • High voltage startup.
  • Power on soft start reducing MOSFET Vds stress.
  • Efficiency and minimum standby power.
  • Frequency shuffling for EMI.
  • Audio noise free operation.
  • Fixed 65KHZ switching frequency.
  • Comprehensive protection coverage VDD Under Voltage Lockout with Hysteresis (UVLO) Cycle-by-cycle over current protection (OCP) Overload Protection (OLP) External programmable Over Temperature Protection (OTP) VDD Over voltage Protection(OVP) CMOS IC www. unisoni.

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Datasheet Details

Part number UC3869
Manufacturer UTC
File Size 287.31 KB
Description HIGH VOLTAGE GREEN MODE PWM CONTROLLER
Datasheet download datasheet UC3869 Datasheet
Additional preview pages of the UC3869 datasheet.

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Full PDF Text Transcription

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UNISONIC TECHNOLOGIES CO., LTD UC3869 Preliminary HIGH VOLTAGE GREEN MODE PWM CONTROLLER  DESCRIPTION The UTC UC3869 is a highly integrated current mode PWM control IC with high voltage start up, optimized for high performance, low standby power consumption and cost effective offline flyback converter applications. PWM switching frequency at normal operation is internally fixed and is trimmed to a tight range. At no load condition, the IC operates in power-saving mode for lower standby power, decreasing frequency for Higher conversion efficiency at light load condition. The internal slope compensation improves system stability at high PWM duty cycle output.
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