AS3845 Datasheet PDF - ASTEC Current Mode Controller Specs

AS3845 - Current Mode Controller

This page provides the datasheet information for the AS3845, a member of the AS3842 Current Mode Controller family.

Datasheet Summary

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.

Datasheet Details

Part number	AS3845
Manufacturer	ASTEC
File Size	155.06 KB
Description	Current Mode Controller
Datasheet	AS3845 Datasheet
Additional preview pages of the AS3845 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.

Published: Jul 18, 2018 |