Datasheet4U Logo Datasheet4U.com

UC3869 - HIGH VOLTAGE GREEN MODE PWM CONTROLLER

General 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.

Key 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.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
UC3861 Resonant-Mode Power Supply Controllers Unitrode
UC3862 Resonant-Mode Power Supply Controllers Unitrode
UC3863 Resonant-Mode Power Supply Controllers Unitrode
UC3864 (UC3861 - 3868) Resonant-Mode Power Supply Controllers Unitrode
UC3865 Resonant-Mode Power Supply Controllers Unitrode

Other Datasheets by Unisonic Technologies

Part Number Description
UC3869A HIGH VOLTAGE GREEN MODE PWM CONTROLLER
UC3869H HIGH VOLTAGE GREEN MODE PWM CONTROLLER
UC3863 LOW COST POWER-SAVING MODE PWM CONTROLLER
UC3863A LOW COST POWER-SAVING MODE PWM CONTROLLER
UC3816A LOW COST POWER-SAVING MODE PWM CONTROLLER

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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.