Datasheet4U Logo Datasheet4U.com

UC3853 - CURRENT MODE PWM CONTROLLER

General Description

The UTC UC3853 is a high performance current mode PWM controller ideally suited for low standby power.

Low VDD startup current make the power reliable on startup design and a large value resistor could be used to minimize the standby power.

Key Features

  • S.
  • Peak Current Mode Control.
  • Adjustable Switching Frequency.
  • Adjustable Soft.
  • start Timer.
  • Adjustable Internal Ramp Compensation.
  • Jittering Frequency ±6% of the Switching Frequency.
  • Power-saving mode for high standby efficiency.
  • Auto.
  • recovery Primary OCP with 10ms Fixed Delay.
  • Auto.
  • recovery Brown.
  • Out Detection.
  • Delayed Operation Upon Start.
  • up via an Internal Fixed Timer.
  • UC384X.
  • like UVLO Thresholds.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
UC3853 High Power Factor Preregulator Unitrode
UC385-1 Fast Transient Response 5-A Low-Dropout Regulator Texas Instruments
UC385-2 Fast Transient Response 5-A Low-Dropout Regulator Texas Instruments
UC385-3 Fast Transient Response 5-A Low-Dropout Regulator Texas Instruments
UC385-ADJ Fast Transient Response 5-A Low-Dropout Regulator Texas Instruments

Other Datasheets by Unisonic Technologies

Part Number Description
UC3816A LOW COST POWER-SAVING MODE PWM CONTROLLER
UC3833L ADVANCED GREEN-MODE PWM CONTROLLER
UC3837 LOW COST POWER-SAVING MODE PWM CONTROLLER
UC3837L LOW COST POWER-SAVING MODE PWM CONTROLLER
UC3838 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 UC3853 Advance LINEAR INTEGRATED CIRCUIT CURRENT MODE PWM CONTROLLER FOR FORWARD AND FLYBACK APPLICATIONS  DESCRIPTION The UTC UC3853 is a high performance current mode PWM controller ideally suited for low standby power. Low VDD startup current make the power reliable on startup design and a large value resistor could be used to minimize the standby power. 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. It contains protection with automatic recovery including OLP, OCP, VCC OVP, BNO and OTP. To protect the power MOSFET, Gate-drive output is fixed up to 15V max.