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LM3843A - CURRENT MODE PWM CONTROLLER

Download the LM3843A datasheet PDF. This datasheet also covers the LM3842A variant, as both devices belong to the same current mode pwm controller family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM384xA are fixed frequency current-mode PWM controller.

They are specially designed for Off-Line and DC-to-DC converter applications with minimal external components.

Key Features

  • Automatic feed forward compensation.
  • Optimized for offline converter.
  • Double pulse suppression.
  • Current mode operation to 500kHz.
  • High gain totem pole output.
  • Internally trimmed bandgap reference.
  • Undervoltage lockout with hysteresis.
  • Low start up current: < 0.3mA.
  • Moisture Sensitivity Level 3 LM3842A/3A/4A/5A SOP-8 PKG DIP-8 PKG.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM3842A_HTC.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number LM3843A
Manufacturer HTC KOREA
File Size 340.47 KB
Description CURRENT MODE PWM CONTROLLER
Datasheet download datasheet LM3843A Datasheet

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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
CURRENT MODE PWM CONTROLLER FEATURES • Automatic feed forward compensation • Optimized for offline converter • Double pulse suppression • Current mode operation to 500kHz • High gain totem pole output • Internally trimmed bandgap reference • Undervoltage lockout with hysteresis • Low start up current: < 0.3mA • Moisture Sensitivity Level 3 LM3842A/3A/4A/5A SOP-8 PKG DIP-8 PKG ORDERING INFORMATION Device LM3842A/3A/4A/5AD LM3842A/3A/4A/5AN Package SOP-8 DIP-8 DESCRIPTION The LM384xA are fixed frequency current-mode PWM controller. They are specially designed for Off-Line and DC-to-DC converter applications with minimal external components.