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UC3843BN AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

UC3843BN product

UC3843BN

DC DC Switching Controllers

PWM ControllerPower ManagementCurrent Mode

The UC3843BN is a fixed-frequency current-mode PWM controller designed for efficient power supply design.

Best for

  • Flyback converters
  • Boost converters
  • Off-line power supplies

Avoid if

  • New designs requiring long-term availability

Check before use

  • Current availability and lifecycle status

Key specifications

Switching Frequency
500 kHz
Max Duty Cycle
100%
Start Threshold
8.4 V

Compliance & Environment

RoHS
RoHS non-compliant
REACH
REACH Unaffected
MSL
1 (Unlimited)
ECCN
EAR99
HTSUS
8542.31.0001

Application

Power Management

Datasheet

ON-Semiconductor-company-79.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for UC3843BN: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
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Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

It is a high-performance current-mode PWM controller IC used for off-line and DC-DC power supply control.