UC2854BQ

$2.22

Description：1.5A, 120KHZ BIPOLAR, PQCC20
Series：-
Mfr：Unitrode
Package：Bulk

SKU:b5512af5c741 Category: PFC (Power Factor Correction) Brand: Unitrode

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Product introduction

Product Detailed Parameters

Description：1.5A, 120KHZ BIPOLAR, PQCC20
Series：-
Mfr：Unitrode
Package：Bulk
Mode：Average Current
Frequency - Switching：80kHz ~ 120kHz
Voltage - Supply：10V ~ 20V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：20-LCC (J-Lead)
Supplier Device Package：20-PLCC (9x9)
Current - Startup：250 µA
Grade：-
Qualification：-

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UC2854BQ

Overview

The UC2854BQ is a high-power factor preregulator integrated circuit manufactured by Unitrode, now part of Texas Instruments. It operates within a switching frequency range of 80 kHz to 120 kHz and is housed in a 20-PLCC (9x9) package. The device is designed for power factor correction applications, utilizing average current mode control to achieve high efficiency and low harmonic distortion in AC-DC power supplies.

Feature Summary

Implements average current mode control for precise input current shaping
Integrated power factor correction controller optimized for preregulator topologies
Designed for operation within standard switching frequency ranges

Applications

Power factor correction stages in AC-DC power supplies
High-efficiency preregulator circuits
Industrial power conversion systems requiring sinusoidal input current

Procurement Notes

Verify the manufacturer designation, as Unitrode assets are managed by Texas Instruments. Confirm the specific suffix 'BQ' corresponds to the 20-PLCC package and operational temperature range. Ensure compatibility with existing PCB footprints for PLCC-20 components during sourcing and integration.

Selection Notes

Select this component when average current mode control is required for power factor correction. The UC2854BQ is suitable for designs needing operation between 80 kHz and 120 kHz. Consider the 20-PLCC package constraints for thermal management and board space compared to other UC2854 variants.

Part Context

The UC2854 series belongs to the family of advanced high-power factor preregulators. Originally developed by Unitrode, these ICs are widely used in offline power supplies. The UC2854BQ specifically denotes the commercial grade version in a plastic leaded chip carrier package, distinct from ceramic or through-hole DIP variants.

Replacement Considerations

UC2854AN: Through-hole PDIP-16 variant with 200 kHz frequency. UC3854A/B: Military/extended temperature versions. UC2854ADWTR: Surface-mount SOIC-16 variant.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.