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UC3843 - High Performance Current Mode Controller

This page provides the datasheet information for the UC3843, a member of the UC3842 High Performance Current Mode Controller family.

Description

The UC3842B/43B series are high performance fixed frequency current mode controllers.

They are specifically designed for Off-Line and DC-to-DC converter applications offering the designer a cost effective solution with minimal external components.

Features

  • consisting of input and reference under voltage lockouts each with hysteresis, cycle-by-cycle current limiting, programmable output dead time, and a latch for single pulse metering. These devices are available in 8-pin dual-in-line ceramic and plastic packages as well as the 8-pin plastic surface mount (SO-8). And 14-pin plastic surface mount (SO-14). SO-14 package Figure Teng.

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Datasheet preview – UC3843

Datasheet Details

Part number UC3843
Manufacturer HOTCHIP
File Size 687.35 KB
Description High Performance Current Mode Controller
Datasheet download datasheet UC3843 Datasheet
Additional preview pages of the UC3843 datasheet.

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Full PDF Text Transcription

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HOTCHIP UC3842/43(B) High Performance Current Mode Controller Description The UC3842B/43B series are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and DC-to-DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
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