# UC2854N - UCN PFC Controller

## Product Summary

The Texas Instruments UC2854N is a high-power factor preregulator designed for AC-DC converters. It offers precise control for optimal power line current usage.

## Product Information

| Field | Value |
| --- | --- |
| Part Number | UC2854N |
| Manufacturer | UCN |
| Product Type | PFC Controller |
| Series | UCx854 |
| Category | Uncategorized |
| Subcategory | Power Factor Correction |
| Mounting Type | Surface Mount |

## Description

The UC2854N from Texas Instruments is a high-power factor preregulator IC designed to improve the efficiency and performance of AC-DC power supplies. It actively corrects power factor, ensuring that the current drawn from the power line is nearly sinusoidal, thereby minimizing distortion to less than 5% and achieving a power factor of up to 0.99.

This device utilizes average current-mode control for stable, fixed-frequency PWM operation, offering low noise sensitivity and robust performance across worldwide line voltage and frequency ranges (75 V to 275 V, 50 Hz to 400 Hz). Key features include feedforward line regulation, a low-offset analog multiplier and divider, and a 1-A totem-pole gate driver compatible with power MOSFETs. It also incorporates a precision voltage reference.

The UC2854N is suitable for various applications, including offline AC-to-DC converters, medical, industrial, telecom, and IT power supplies, as well as uninterruptible power supplies (UPS) and appliances. It is available in a 16-pin SOIC package, designed for surface mounting.

Note: This product is not recommended for new designs. Consider alternate products like the UCC28180 for new projects.

## Availability and Pricing

| Field | Value |
| --- | --- |
| Stock Status | In Stock |
| Distributor Count | 1 |
| Total Stock | 13 |
| Pricing Available | No |

## Distributor Offers

| Distributor | Stock | Unit Price | MOQ | Lead Time | Last Updated |
| --- | --- | --- | --- | --- | --- |
| Chanetech | 13 |  |  |  |  |

## Features

- Achieves 0.99 power factor.
- Limits line-current distortion to <5%.
- Supports worldwide voltage and frequency.
- Features average current-mode control.
- Includes 1-A totem-pole gate driver.

## Applications

- Used in offline AC-to-DC converters.
- Suitable for industrial power supplies.
- Applicable to telecom power systems.
- Designed for uninterruptible power supplies.
- Incorporated in appliances and white goods.

## Compliance

| Field | Value |
| --- | --- |
| RoHS Status | RoHS3 Compliant |
| REACH Status | REACH Unaffected |
| Moisture Sensitivity Level | 1 Unlimited |

## Documents and Media

- Datasheet: https://static.distyparts.com/disty-files/datasheets/e9/73/46/10611351-2156-UC2854BJ-ND.pdf
- Image: https://static.distyparts.com/disty-files/images/2a/ec/ca/n0016a.png
- Product Page: https://distyparts.com/product/uc2854n-3
- RFQ URL: https://distyparts.com/product/uc2854n-3#rfq

## FAQs

### What is the operating voltage range of the UC2854N?

The UC2854N operates from a line voltage of 75 to 275 V.

### What package does the UC2854N come in?

The UC2854N is offered in a 16-pin SOIC package.

### What is the operating temperature range of the UC2854N?

The UC2854N operates from -40°C to 85°C.

### What power factor can the UC2854N achieve?

The UC2854N boosts power factor to 0.99.

### What is the line-current distortion limit of the UC2854N?

The UC2854N limits line-current distortion to less than 5%.

## Related Pages

- Manufacturer: https://distyparts.com/manufacturer/ucn
- Category: https://distyparts.com/category/uncategorized/new-products
- Product Page: https://distyparts.com/product/uc2854n-3
- Markdown File: https://distyparts.com/product/uc2854n-3.md
- TXT File: https://distyparts.com/product/uc2854n-3.txt