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UC3845B - HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

This page provides the datasheet information for the UC3845B, a member of the UC3842B HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER family.

Datasheet Summary

Description

The UC384xB family of control ICs provides the necessary

Features

  • to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE.

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Datasheet preview – UC3845B

Datasheet Details

Part number UC3845B
Manufacturer STMicroelectronics
File Size 233.69 KB
Description HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
Datasheet download datasheet UC3845B Datasheet
Additional preview pages of the UC3845B datasheet.

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Full PDF Text Transcription

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UC2842B/3B/4B/5B ® UC3842B/3B/4B/5B HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER . TRIMMED OSCILLATOR FOR PRECISE FREQUENCY CONTROL . OSCILLATOR FREQUENCY GUARANTEED AT 250kHz . CURRENT MODE OPERATION TO 500kHz . AUTOMATIC FEED FORWARD COMPENSA- TION . LATCHING PWM FOR CYCLE-BY-CYCLE CURRENT LIMITING . INTERNALLY TRIMMED REFERENCE WITH UNDERVOLTAGE LOCKOUT . HIGH CURRENT TOTEM POLE OUTPUT . UNDERVOLTAGE LOCKOUT WITH HYSTER- ESIS . LOW START-UP AND OPERATING CURRENT DESCRIPTION The UC384xB family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count.
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