What are the key specifications?

It supports switching frequencies up to 500 kHz, a maximum duty cycle of 96%, and operates with a supply voltage range of 8.5V to 30V.

What should engineers review before using this IC?

Ensure the PCB layout minimizes noise on the Current Sense and Voltage Feedback pins, and consider adding slope compensation if operating at duty cycles above 50%.

What is the pinout of UC3843BD1R2G?

Use the UC3843BD1R2G datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about UC3843BD1R2G pinout to locate pins, power rails, and interface signals before layout.

UC3843BD1R2G Datasheet, Specs, Alternatives & ECAD | onsemi

AI summary

The UC3843BD1R2G is a high-performance current-mode PWM controller optimized for off-line and DC-DC power supplies, featuring low startup current and integrated protection.

Best for

Off-line power supplies
DC-DC converters

Avoid if

High-voltage startup requirements exceeding 30V

Check before use

Current sense resistor sizing
Slope compensation requirements

Key specifications

Switching Frequency: Up to 500 kHz
Max Duty Cycle: 96%
UVLO Threshold (On): 8.5 V
Supply Voltage: 8.5 V to 30 V

Compliance & Environment

RoHS: ROHS3 Compliant
REACH: REACH Unaffected
MSL: 1 (Unlimited)
ECCN: EAR99
HTSUS: 8542.31.0001

Application

Power SuppliesIndustrial Electronics

Datasheet

DSASFU10006061.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for UC3843BD1R2G: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

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Where to Buy

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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

It is a fixed-frequency current-mode controller IC designed for efficient power conversion, specifically tailored for lower voltage applications.

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is the UC3843BD1R2G?+×

What are the key specifications?+×

What should engineers review before using this IC?+×

What is the pinout of UC3843BD1R2G?+×