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UC3854N

Category: Power Switch Ics

Description: High Power Factor Preregulator

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Part Number Seller's Name Stock Brand Package/Case Date Code Description Price

UC3854N

UC3854N has several brands around the world that may have alternate names for UC3854N due to regional differences or acquisition. UC3854N may also be known as the following names:

    Alternate Text

    All sellers

    11

    Brand new

    11

    Certified preowned

    11

    Official

    11

    Third Party

    11

    Description

    Part Number Product Description Summary Price Buy

    Utsource

    66794

    5.0 out of 5 stars

    1 star 0.1%
    2 star 0%
    3 star 0.2%
    4 star 0.3%
    5 star 99.3%

    Total products: 2397832

    Total sales: 12607564

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:9999

    USED

    Uc/ti

    High Power Factor Preregulator

    ≥1: US $2.87700 US $2.58930

    ≥5: US $1.91800 US $1.72620

    ≥10: US $1.72620 US $1.55358

    ≥20: US $1.67825 US $1.51043

    ≥50: US $1.63030 US $1.46727

    ≥100: US $1.58235 US $1.42411

    ≥200: US $1.53440 US $1.38096

    ≥500: US $1.51522 US $1.36370

    ≥1000: US $1.48645 US $1.33780

    More: Inquiry

    Hua Rui Ke Chuang Electronics Co.,Ltd.

    701

    5.0 out of 5 stars

    1 star 0.3%
    3 star 0.3%
    4 star 0.9%
    5 star 98.6%

    Total products: 12425

    Total sales: 101001

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:15

    NEW

    Texas Instruments

    02+

    High Power Factor Preregulator

    ≥1: US $1.17348 US $1.05613

    More: Inquiry

    Tian Tian Yuan Electronics Co.,Ltd.

    37

    4.8 out of 5 stars

    1 star 2.7%
    4 star 13.5%
    5 star 83.8%

    Total products: 16966

    Total sales: 70108

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:59

    NEW

    Unitrode

    09+

    High Power Factor Preregulator

    ≥1: US $1.76022 US $1.58420

    ≥10: US $1.56464 US $1.40818

    ≥100: US $1.36906 US $1.23215

    More: Inquiry

    TSD Electronics Co.,Ltd.

    51

    4.9 out of 5 stars

    1 star 2%
    4 star 2%
    5 star 96.1%

    Total products: 3944

    Total sales: 13840

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:945

    USED

    UC

    05+

    High Power Factor Preregulator

    ≥1: US $1.78816 US $1.60934

    More: Inquiry

    Yue Hong Fa Electronics Co.,Ltd.

    844

    5.0 out of 5 stars

    1 star 0.2%
    2 star 0.2%
    4 star 0.9%
    5 star 98.6%

    Total products: 4102

    Total sales: 51287

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:245

    USED

    UC

    98+

    High Power Factor Preregulator

    ≥1: US $0.67056 US $0.60350

    More: Inquiry

    Utsource Original Store

    66794

    5.0 out of 5 stars

    1 star 0.1%
    2 star 0%
    3 star 0.2%
    4 star 0.3%
    5 star 99.3%

    Total products: 2397832

    Total sales: 12607564

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N You deserve it
    UC3854N

    Stock:37783

    NEW

    UC

    9610+

    You deserve it

    ≥1: US $2.79400 US $2.51460

    ≥5: US $2.65430 US $2.38887

    ≥10: US $2.51460 US $2.26314

    ≥20: US $2.44475 US $2.20028

    ≥50: US $2.37490 US $2.13741

    ≥100: US $2.30505 US $2.07455

    ≥200: US $2.23520 US $2.01168

    ≥500: US $2.20726 US $1.98653

    ≥1000: US $2.16535 US $1.94882

    More: Inquiry

    Bo Cheng Wei Electronics Co.,Ltd.

    2720

    5.0 out of 5 stars

    1 star 0.2%
    3 star 0.7%
    4 star 0.7%
    5 star 98.5%

    Total products: 15419

    Total sales: 95256

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:210

    USED

    00+

    High Power Factor Preregulator

    ≥1: US $1.76022 US $1.58420

    More: Inquiry

    Xing Sheng Electronics Co.,Ltd.

    4063

    5.0 out of 5 stars

    1 star 0.2%
    3 star 0.2%
    4 star 0.8%
    5 star 98.8%

    Total products: 49294

    Total sales: 127251

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:426

    USED

    Texas Instruments

    00+

    High Power Factor Preregulator

    ≥1: US $1.11760 US $1.00584

    More: Inquiry

    GUANGZEDZ

    624

    5.0 out of 5 stars

    1 star 0.5%
    3 star 0.2%
    4 star 2.4%
    5 star 97%

    Total products: 38774

    Total sales: 142776

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:70

    USED

    UC

    02+

    High Power Factor Preregulator

    ≥1: US $0.58674 US $0.52807

    More: Inquiry

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:4

    USED

    UC

    10+

    High Power Factor Preregulator

    ≥1: US $0.97790 US $0.88011

    More: Inquiry

    UC3854N DIP16
    UC3854N

    Stock:89

    USED

    UC

    02+/04+

    DIP16

    ≥1: US $0.97790 US $0.88011

    More: Inquiry

    ZJ Electronics Co.,Ltd.

    58

    4.8 out of 5 stars

    1 star 1.7%
    2 star 1.7%
    3 star 1.7%
    4 star 3.4%
    5 star 91.4%

    Total products: 20375

    Total sales: 66451

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:42

    NEW

    U uir(unitrode)

    01+

    High Power Factor Preregulator

    ≥1: US $1.95580 US $1.76022

    More: Inquiry

    yuansen

    2

    5.0 out of 5 stars

    5 star 100%

    Total products: 5978

    Total sales: 2449

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    UC3854N High   Power   Factor   Preregulator
    UC3854N

    Stock:74

    USED

    Texas Instruments

    05+09

    High Power Factor Preregulator

    ≥1: US $1.67640 US $1.50876

    More: Inquiry

    Introduction:

    The UC3854N provides active power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a supply power capable of optimally using available power-line current while minimizing line-current distortion.

     

    Some Core Parameters:

    SPECIAL FEATURES :

    ● Control Boost PWM to 0.99 Power Factor

    ● Limit Line Current Distortion To <5%

    ● World-Wide Operation Without Switches

    ● Feed-Forward Line Regulation

    ● Average Current-Mode Control

    ● Low Noise Sensitivity

    ● Low Start-Up Supply Current

    ● Fixed-Frequency PWM Drive

    ● Low-Offset Analog Multiplier/Divider

    ● 1A Totem-Pole Gate Driver

    ● Precision Voltage Reference

     

    How it Uses in the work:

    Internal Block Diagram:

    MyFang/202008/03/f_3cabb921178e401991c41c102b876d1d.png

    UC3854N Pinout Connections:

    MyFang/202008/03/f_a090c29c4b7d44d3bf45a63240e3b5b7.png

    UC3854N Pin Functions:

    ● Gnd Pin 1: All voltages are measured with re- spect to GND.

    ● PKLMT Pin 2: peak limit. The threshold for PKLMT is 0.0V.

    ● CA Out Pin 3: current amplifier output

    ● ISENSE Pin 4: This is the inverting input to the current amplifier.

    ● Mult Out Pin 5: multiplier output and current sense plus.

    ● IAC Pin 6: This input to the analog multiplier is a current.

    ● VA Out Pin 7: voltage amplifier output

    ● VRMS Pin 8: RMS line voltage

    ● REF Pin 9: voltage reference output

    ● ENA Pin 10: ENA is a logic input that will en- able the PWM output.

    ● VSENSE Pin 11: voltage amplifier inverting input. 

    ● RSET Pin 12: oscillator charging current and multiplier limit set.

    ● SS Pin 13 SS will remain at Gnd as long as the IC is disabled or VCC is too low.

    ● VCC Pin 15: positive supply voltage





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