• UC3854BN PDIP (N)-16
UC3854BN PDIP (N)-16

UC3854BN

95% duty cycle and frequency of 200 kHz

Quantity Unit Price(USD) Ext. Price
1 $3.779 $3.78
200 $1.463 $292.60
500 $1.411 $705.50
1000 $1.386 $1,386.00

Inventory:7,361

*The price is for reference only.
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  • Part Number : UC3854BN

  • Package/Case : PDIP (N)-16

  • Brands : TI

  • Components Categories : PFC (Power Factor Correction)

  • Datesheet : UC3854BN DataSheet (PDF)

Quick Inquiry

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Overview of UC3854BN

The UC3854BN is a high-performance power factor correction (PFC) controller IC designed for use in power supply applications. It provides active power factor correction to improve overall power efficiency and meet regulatory requirements for power quality.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • VREF: Reference Voltage Output
  • COMP: Error Amplifier Output
  • FB: Feedback Input
  • VCC: Supply Voltage
  • GATE: Gate Driver Output
  • VSENSE: Current Sense Input
  • VIN: Input Voltage
  • VOUT: Output Voltage

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the UC3854BN IC for a visual representation.

Key Features

  • High-Performance PFC: The UC3854BN offers efficient power factor correction for improved power efficiency.
  • Wide Input Voltage Range: Operates with a wide input voltage range, making it versatile for different power supply designs.
  • Error Amplifier: Includes a built-in error amplifier for precise feedback control and regulation.
  • Gate Driver Output: Provides a gate driver output for driving external power MOSFETs in PFC applications.
  • Current Sense Input: Features a current sense input for monitoring and controlling the output current.

Note: For detailed technical specifications, please refer to the UC3854BN datasheet.

Application

  • Power Supply Units: Ideal for use in power supply units requiring power factor correction functionality.
  • LED Drivers: Suitable for LED driver applications where efficient power conversion is essential.
  • Industrial Equipment: Used in various industrial equipment to improve power quality and efficiency.

Functionality

The UC3854BN is a high-performance PFC controller that enables active power factor correction in power supply systems. It ensures efficient power conversion and compliance with power quality standards.

Usage Guide

  • Input Voltage: Connect VIN (Pin 7) to the input voltage source for power supply operation.
  • Output Connections: Use VOUT (Pin 8) for connecting to the output of the power supply unit.
  • Feedback Control: Connect feedback signals to the FB (Pin 3) input for regulation and control.

Frequently Asked Questions

Q: What is the role of the error amplifier in the UC3854BN?
A: The error amplifier in the UC3854BN compares the feedback voltage with the reference voltage to regulate the output voltage and improve power factor correction.

Q: Can the UC3854BN handle high input voltages?
A: Yes, the UC3854BN is designed to operate with a wide input voltage range, making it suitable for applications with varying input voltages.

Equivalent

For similar functionalities, consider these alternatives to the UC3854BN:

  • UC3853: Another high-performance PFC controller from Texas Instruments with similar features and capabilities.
  • NCP1653: A PFC controller IC from ON Semiconductor offering comparable performance and functionality to the UC3854BN.

UC3854BN

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Topology Boost Control mode CCM
Switching frequency (max) (kHz) 200 UVLO thresholds on/off (V) 10.5/10
Vin (max) (V) 20 Features > 750 W applications, Average current mode, Continuous Control Mode, Enable, Undervoltage protection
Rating Catalog Operating temperature range (°C) 0 to 70
Duty cycle (max) (%) 95

Warranty & Returns

Warranty, Returns, and Additional Information

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    Returns for refund: within 90 days

    Returns for Exchange: within 90 days

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