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AS3844 - Current Mode Controller

Download the AS3844 datasheet PDF (AS3842 included). The manufacturer datasheet provides complete specifications, pinout details, electrical characteristics, and typical applications for current mode controller.

Description

The AS3842 family of control ICs provide pin-for-pin replacement of the industry standard UC3842 series of devices.

The devices are redesigned to provide significantly improved tolerances in power supply manufacturing.

The 2.5 V reference has been trimmed to 1.0% tolerance.

Features

  • 2.5 V bandgap reference trimmed to 1.0% and temperature-compensated.
  • Standard temperature range extended to 105¡C.
  • AS3842/3 oscillations trimmed for precision duty cycle clamp.
  • AS3844/5 have exact 50% max duty cycle clamp.
  • Advanced oscillator design simplifies synchronization.
  • Improved specs on UVLO and hysteresis provide more predictable start-up and shutdown.
  • Improved 5 V regulator provides better AC noise immunity.
  • Guaranteed performance with current s.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (AS3842-ASTEC.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number AS3844
Manufacturer ASTEC
File Size 155.06 KB
Description Current Mode Controller
Datasheet download datasheet AS3844 Datasheet

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Full PDF Text Transcription

Click to expand full text
SEMICONDUCTOR AS384x Current Mode Controller Features ¥ 2.5 V bandgap reference trimmed to 1.0% and temperature-compensated ¥ Standard temperature range extended to 105¡C ¥ AS3842/3 oscillations trimmed for precision duty cycle clamp ¥ AS3844/5 have exact 50% max duty cycle clamp ¥ Advanced oscillator design simplifies synchronization ¥ Improved specs on UVLO and hysteresis provide more predictable start-up and shutdown ¥ Improved 5 V regulator provides better AC noise immunity ¥ Guaranteed performance with current sense pulled below ground Description The AS3842 family of control ICs provide pin-for-pin replacement of the industry standard UC3842 series of devices. The devices are redesigned to provide significantly improved tolerances in power supply manufacturing. The 2.
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