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UC3869H Datasheet High Voltage Green Mode Pwm Controller

Manufacturer: Unisonic Technologies

Overview: UNISONIC TECHNOLOGIES CO., LTD UC3869H Preliminary LINEAR INTEGRATED CIRCUIT HIGH VOLTAGE GREEN MODE PWM CONTROLLER.

General Description

The UTC UC3869H 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.

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 100KHZ 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) www. unisonic. com. tw.

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