For BusinessPricing
Request a demo

UC3843-TD AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

UC3843-TD product

UC3843-TD

Offline Switchers

PWM controllercurrent-mode controloffline power supplyDC-DC converterDIP-8SOP-8

UC3843-TD is an 8-pin current-mode PWM controller for offline and DC-DC switching power supplies, with a 5 V reference and high-current MOSFET gate-drive output.

Best for

  • Current-mode control of offline switching power supplies
  • DC-DC converters using an external power MOSFET

Avoid if

  • A controller with integrated power switching or documented digital control interfaces is required

Check before use

  • VCC startup and minimum operating voltage
  • Current-sense threshold and peak-current limit
  • RT/CT oscillator timing and MOSFET drive capability

Key specifications

Controller type
Current-mode PWM controller
Supply voltage maximum
30 V
Reference output
5.00 V typical
Maximum frequency
500 kHz
Output current
±1 A peak
Packages
DIP-8 / SOP-8

Compliance & Environment

RoHS
-
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Offline switching power suppliesDC-DC convertersExternal MOSFET gate drive

Datasheet

d4666ec9c56ffbcb9af9e1c918da85a8_UC3843-TD.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for UC3843-TD: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
Get Files
PCB Footprint
Land pattern for PCB layout
Get Files
3D Model
STEP file for mechanical design
Get Files
KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
Generate library

Login required · CAD models billed separately as an add-on

Alternative components

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

Design and risk insights

Questions & answers

UC3843-TD is a current-mode pulse-width-modulation controller for offline and DC-DC switching power supplies. It integrates an oscillator, error amplifier, current-sense comparator, 5 V reference and push-pull output driver.