Datasheet Texas Instruments UC1854AL

Datasheets

Lifecycle Status	Obsolete (Manufacturer has discontinued the production of the device)
Manufacture's Sample Availability	No

Pin	20
Package Type	L

Replacement	UC1854BL
Replacement Code	Q

RoHS	Not Compliant
Pb Free	No

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DN-44 UC3854A and UC3854B Advanced Power Factor Correction Control ICs (Rev. A)
PDF, 158 Kb, Revision: A, File published: Nov 15, 2005
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AC Requirements for Power Factor Correction Circuits
PDF, 29 Kb, File published: Mar 28, 2002
This technical brief identifies the recommended range of IAC for each of the devices within the UCC3854 family of PFC controllers.
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Accurate PWM Duty Cycle Clamp
PDF, 58 Kb, File published: Jan 25, 2002
Power supply applications using current sense transformers require a duty cycle clamp on the pulse width modulator (PWM) to ensure transformer reset. Not all PWMs come with a duty cycle clamp presenting a problem for the power supply designer. This application note shows how to implement a duty cycle clamp by using a simple delay circuit.

Series: UC1854A (4)

Semiconductors > Space & High Reliability > Power Management Products > Offline and Isolated DC/DC Controller and Converter