What are the key features of this controller?

Key features include a trimmed oscillator (up to 500 kHz), cycle-by-cycle current limiting, undervoltage lockout with hysteresis, and a high-current totem pole output.

What should engineers review before using this part?

Engineers should ensure the PCB layout minimizes noise on the current sense and feedback pins, and verify that the 16V/10V UVLO thresholds align with the system's startup voltage.

What are the key specifications?

The device operates up to 500 kHz, has a 5.0V reference, 1.0A output current capability, and a maximum duty cycle of 50%.

What is the pinout of UC3844BD1R2G?

Use the UC3844BD1R2G datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about UC3844BD1R2G pinout to locate pins, power rails, and interface signals before layout.

UC3844BD1R2G Datasheet, Specs, Alternatives & ECAD | onsemi

AI summary

The UC3844BD1R2G is a high-performance current-mode PWM controller from onsemi, optimized for off-line and DC-DC power supply designs.

Best for

Off-line power supplies
DC-DC converters

Avoid if

Applications requiring >50% duty cycle (use UC3845B instead)

Check before use

UVLO threshold compatibility
PCB layout for noise immunity

Key specifications

Frequency: 500 kHz
UVLO (On/Off): 16V / 10V
Max Duty Cycle: 50%
Output Current: 1.0 A

Compliance & Environment

RoHS: ROHS3 Compliant
REACH: REACH Unaffected
MSL: 1 (Unlimited)
ECCN: EAR99
HTSUS: 8542.39.0001

Application

Power SupplyIndustrial

Datasheet

ON-Semiconductor-company-79.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for UC3844BD1R2G: 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

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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 PWM controller IC designed for driving power MOSFETs in off-line and DC-DC converter 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 UC3844BD1R2G?+×

What are the key features of this controller?+×

What should engineers review before using this part?+×

What are the key specifications?+×

What is the pinout of UC3844BD1R2G?+×