Datasheet4U Logo Datasheet4U.com

UC3842A - CURRENT MODE PWM CONTROLLER

General Description

The UTC UC3842A/3843A are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count.

The differences between UC3842A and UC3843A are the under-voltage lockout thresholds.

Key Features

  • S.
  • Operation output switching frequency up to 500 kHz.
  • Automatic feed forward compensation.
  • Latching PWM for cycle-by-cycle current limiting.
  • High current totem pole output.
  • Internally trimmed reference with under voltage lockout.
  • UVLO with hysteresis.
  • Low startup and operating current.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
UC3842A HIGH-PERFORMANCE CONTROLLERS Motorola
UC3842A SMPS Controller Fairchild Semiconductor
UC3842A HIGH-PERFORMANCE PWM CONTROLLER ST Microelectronics
UC3842A CURRENT MODE PWM CONTROLLER LINFINITY
UC3842A High Performance Current Controller ON Semiconductor

Other Datasheets by Unisonic Technologies

Part Number Description
UC3842A CURRENT MODE PWM CONTROL CIRCUITS
UC3842B CONTROLLERS
UC3843A CURRENT MODE PWM CONTROLLER
UC3843A CURRENT MODE PWM CONTROL CIRCUITS
UC3843A-Q 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 UC3842A/3843A LINEAR INTEGRATED CIRCUIT HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS  DESCRIPTION The UTC UC3842A/3843A are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count. The differences between UC3842A and UC3843A are the under-voltage lockout thresholds. The UC3842A ideally suited to off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF), and UC3843A has UVLO thresholds of 8.4V(ON) and 7.6V(OFF) for lower voltage applications.