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L4981A

Category: IC Chips

Description: POWER FACTOR CORRECTOR

Price range ($)

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0.39456 2.93370

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

L4981A

L4981A has several brands around the world that may have alternate names for L4981A due to regional differences or acquisition. L4981A may also be known as the following names:

    Alternate Text

    All sellers

    9

    Brand new

    9

    Certified preowned

    9

    Official

    9

    Third Party

    9

    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: 2398035

    Total sales: 12714591

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:9999

    USED

    STMicroelectronics

    05+

    POWER FACTOR CORRECTOR

    ≥1: US $1.00584 US $0.90526

    ≥5: US $0.75438 US $0.67894

    ≥10: US $0.52807 US $0.47526

    ≥20: US $0.50292 US $0.45263

    ≥50: US $0.45263 US $0.40737

    ≥100: US $0.44006 US $0.39606

    ≥200: US $0.42748 US $0.38473

    ≥500: US $0.41491 US $0.37342

    ≥1000: US $0.40234 US $0.36211

    More: Inquiry

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:9999

    USED

    STMicroelectronics

    99+

    POWER FACTOR CORRECTOR

    ≥1: US $0.98640 US $0.88776

    ≥5: US $0.73980 US $0.66582

    ≥10: US $0.51786 US $0.46607

    ≥20: US $0.49320 US $0.44388

    ≥50: US $0.44388 US $0.39949

    ≥100: US $0.43155 US $0.38840

    ≥200: US $0.41922 US $0.37730

    ≥500: US $0.40689 US $0.36620

    ≥1000: US $0.39456 US $0.35510

    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: 13970

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:1120

    USED

    STMicroelectronics

    POWER FACTOR CORRECTOR

    ≥1: US $1.78816 US $1.60934

    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: 49475

    Total sales: 128548

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:163

    USED

    STMicroelectronics

    02/09/97+

    POWER FACTOR CORRECTOR

    ≥1: US $1.34112 US $1.20701

    More: Inquiry

    Yue Hong Fa Electronics Co.,Ltd.

    845

    5.0 out of 5 stars

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

    Total products: 4139

    Total sales: 51466

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:180

    USED

    STMicroelectronics

    99+

    POWER FACTOR CORRECTOR

    ≥1: US $0.67056 US $0.60350

    More: Inquiry

    JIE RONG Electronics Co.,Ltd

    67

    4.7 out of 5 stars

    1 star 4.5%
    4 star 7.5%
    5 star 88.1%

    Total products: 19686

    Total sales: 49509

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:5

    USED

    STMicroelectronics

    97+

    POWER FACTOR CORRECTOR

    ≥1: US $2.58166 US $2.32349

    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: 39017

    Total sales: 144815

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:6

    USED

    STMicroelectronics

    97+/99+

    POWER FACTOR CORRECTOR

    ≥1: US $0.58674 US $0.52807

    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: 20383

    Total sales: 67910

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:488

    NEW

    STM

    05+

    POWER FACTOR CORRECTOR

    ≥1: US $2.93370 US $2.64033

    More: Inquiry

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:137

    NEW

    STMicroelectronics

    9405/96

    POWER FACTOR CORRECTOR

    ≥1: US $2.93370 US $2.64033

    More: Inquiry

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:36

    NEW

    STM

    09+

    POWER FACTOR CORRECTOR

    ≥1: US $2.93370 US $2.64033

    More: Inquiry

    GUANGZEDIANZI

    3

    4.3 out of 5 stars

    3 star 33.3%
    5 star 66.7%

    Total products: 10313

    Total sales: 1811

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:27

    USED

    STMicroelectronics

    POWER FACTOR CORRECTOR

    ≥1: US $0.78232 US $0.70409

    More: Inquiry

    SONGXING Electronics Co.,Ltd.

    86

    4.7 out of 5 stars

    1 star 5.8%
    4 star 10.5%
    5 star 83.7%

    Total products: 38533

    Total sales: 105723

    Average lead time: 0 Hour

    Delivery times (Express): 0Deliverytimes

    Delivery times (Post office): 0

    L4981A POWER   FACTOR   CORRECTOR
    L4981A

    Stock:149

    USED

    STMicroelectronics

    99

    POWER FACTOR CORRECTOR

    ≥1: US $1.56464 US $1.47076

    More: Inquiry

    CONTROL BOOST PWM UP TO 0.99P.F.

    LIMITLINE CURRENT DISTORTION TO < 5%

    UNIVERSAL INPUT MAINS

    FEED FORWARD LINE AND LOAD REGULATION

    AVERAGE CURRENT MODE PWM FOR MINIMUM NOISE SENSITIVITY

    HIGH CURRENT BIPOLAR AND DMOS TOTEM POLE OUTPUT

    LOW START-UP CURRENT (0.3mA TYP.)

    UNDER VOLTAGE LOCKOUT WITH HYSTERESIS AND PROGRAMMABLE TURN ON THRESHOLD

    OVERVOLTAGE, OVERCURRENT PROTECTION

    PRECISE 2% ON CHIP REFERENCE EXTERNALLY AVAILABLE

    SOFT START

     

    DESCRIPTION

    The L4981 I.C. provides the necessary features to achieve a very high power factor up to 0.99.

    Realized in BCD 60II technology this power factor corrector (PFC) pre-regulator contains all the control functions for designing a high efficiency-mode power supply with sinusoidal line current consumption.

    The L4981 can be easily used in systems with mains voltages between 85V to 265V without any line switch. This new PFC offers the possibility to work at fixed frequency (L4981A) or modulated frequency (L4981B) optimizing the size of the input filter; both the operating frequency modes working with an average current mode PWM controller, maintaining sinusoidal line current without slope compensation.

    Besides power MOSFET gate driver, precise voltage reference (externally available), error amplifier, undervoltage lockout, current sense and the soft start are included. To limit the number of the external components, the device integrates protections as overvoltage and overcurrent. The overcurrent level can be programmed using a simple resistor for L4981A. For a better precision and for L4981B an external divider must be used.


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    L4981A

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