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UC3854DWTR The Texas Instruments UC3854DWTR is a high-power factor preregulator IC. It controls boost PWM to achieve a power factor of 0.99 and limits line-current distortion to less than 5%.
Mfr Part #:

UC3854DWTR

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3854DWTR is a high-power factor preregulator IC. It controls boost PWM to achieve a power factor of 0.99 and limits line-current distortion to less than 5%.
✓ Total Stock: 4,314 pcs
$ Price Range: $1.94

UC3854DWTR Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
3,314 pcs
On Request
3314 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
1,000 pcs
On Request
1000 pcs On Request 1 On Request On Request 0014+ On Request On Request
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UC3854DWTR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Current
Frequency
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UC3854DWTR Description

Short technical summary and product information.

The UC3854DWTR from Texas Instruments is an integrated circuit designed for active power factor correction in power systems. It enables power supplies to draw sinusoidal current from sinusoidal power lines, minimizing distortion and optimizing power usage. This device implements average current-mode control for stable, low-distortion fixed-frequency current control.

 

Key electrical specifications include a control boost PWM to 0.99 power factor and a limit for line-current distortion to less than 5%. It operates with a frequency of 200kHz and supports a wide line voltage range from 75 V to 275 V across 50-Hz to 400-Hz line frequencies. The operating voltage range for the device itself is 14.5V to 30V, with a current draw of 1.5 mA.

 

This IC features a 1-A totem-pole gate driver and a precision 7.5-V reference. It is suitable for applications such as offline AC-to-DC converters, medical, industrial, telecom, and IT power supplies, uninterruptible power supplies (UPS), and appliances. The UC3854DWTR is available in a 16-SOIC package with surface mount mounting type. It operates within a temperature range of 0°C to 70°C.

UC3854DWTR Quick Information

Product Type: PFC Controller
Canonical Name: UC3854DWTR High-Power Factor Preregulator
Subcategory: Power Factor Correction

UC3854DWTR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

UC3854DWTR Estimated Pricing

Qty Low High
1+ $1.94 $1.94

Estimated market price range - modelled values for guidance only, not live distributor offers.

UC3854DWTR Features

  • Achieves 0.99 power factor.
  • Limits line-current distortion to < 5%.
  • Operates at 200kHz fixed frequency.
  • Supports 14.5V to 30V operating voltage.
  • Surface mount 16-SOIC package.

UC3854DWTR Applications

  • Used in offline AC-to-DC converters.
  • Suitable for industrial power supplies.
  • Applicable to telecom power systems.
  • Designed for IT power supplies.
  • Used in uninterruptible power supplies.

UC3854DWTR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UC3854DWTR?

The operating voltage range is 14.5V to 30V.

What is the package type of the UC3854DWTR?

The UC3854DWTR is available in a 16-SOIC surface-mount package.

What is the operating temperature range of the UC3854DWTR?

The operating temperature range is 0°C to 70°C.

What is the operating frequency of the UC3854DWTR?

The operating frequency is 200kHz.

What power factor can the UC3854DWTR achieve?

It controls boost PWM to achieve a power factor of 0.99.

What is the line voltage range of the UC3854DWTR?

The line voltage range is 75V to 275V.

What control mode does the UC3854DWTR use?

It uses average current mode control.

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