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UC3842-TD AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

UC3842-TD product

UC3842-TD

MOSFETs - Single

UC3842current-mode PWMSMPS controlleroffline power supplyDC-DC converterDIP-8SOP-8

UC3842-TD is an 8-pin current-mode PWM controller intended for offline and DC-DC switching power supplies.

Best for

  • Offline switch-mode power supplies
  • DC-DC converters using an external MOSFET

Avoid if

  • A design requires documented compliance or lifecycle status not supplied by this datasheet
  • A controller with integrated power MOSFET is required

Check before use

  • Confirm DIP-8 versus SOP-8 ordering option
  • Design VCC startup and auxiliary bias around the UVLO thresholds
  • Keep the current-sense signal within the specified input limits

Key specifications

PWM control method
Current mode
Supply voltage maximum
30 V
Start threshold
16 V typical
Operating threshold
10 V typical
Reference output
5.00 V typical
Oscillator frequency
52 kHz typical
Maximum duty cycle
96% typical
Gate-drive peak current
±1 A

Compliance & Environment

RoHS
-
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Offline switch-mode power suppliesDC-DC power convertersIndustrial power-control circuits

Datasheet

0d06a9d56089192c35708505687e63fc_UC3842-TD.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for UC3842-TD: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

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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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Alternative components

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

Design and risk insights

Questions & answers

UC3842-TD is a current-mode PWM controller with an internal 5 V reference, error amplifier, oscillator, current-sense comparator, undervoltage lockout, and totem-pole MOSFET driver.