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AS3842 - 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.

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Datasheet Details

Part number AS3842
Manufacturer ASTEC
File Size 155.06 KB
Description Current Mode Controller
Datasheet download datasheet AS3842 Datasheet

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Full PDF Text Transcription

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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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