UC2843A - Current Mode PWM Controller

Unitrode

Download the UC2843A datasheet PDF. This datasheet also covers the UC2842A variant, as both devices belong to the same current mode pwm controller family and are provided as variant models within a single manufacturer datasheet.

General Description

The UC1842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC3842/3/4/5 family.

Key Features

Optimized for Off-line and DC to DC Converters.
Low Start Up Current (.

📥 Download Datasheet

UC2843A current mode pwm controller by Unitrode - Datasheet Preview — Note: The manufacturer provides a single datasheet file (UC2842A-Unitrode.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number	UC2843A
Manufacturer	Unitrode
File Size	972.93 KB
Description	Current Mode PWM Controller
Datasheet	UC2843A Datasheet

Full PDF Text Transcription for UC2843A (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for UC2843A. For precise diagrams, and layout, please refer to the original PDF.

Current Mode PWM Controller application INFO available UC1842A/3A/4A/5A UC2842A/3A/4A/5A UC3842A/3A/4A/5A FEATURES • Optimized for Off-line and DC to DC Converters • Low ...

View more extracted text

4A/5A FEATURES • Optimized for Off-line and DC to DC Converters • Low Start Up Current (<0.5mA) • Trimmed Oscillator Discharge Current • Automatic Feed Forward Compensation • Pulse-by-Pulse Current Limiting • Enhanced Load Response Characteristics DESCRIPTION The UC1842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC3842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up current is guaranteed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under voltage l

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