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    1. Home/
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    5. L4985A STMicroelectronics

    L4985A [STMicroelectronics]

    L4985A
    L4985A

    Part No:

    L4985A

    Category:

    Power Supplies

    Manufacturer:

    STMicroelectronics

    Description:

    CCM PFC CONTROLLER WITH HIGH VOL.PFC IC Continuous Conduction (CCM) 65kHz 8-SO

    RoHS Status:

    Product FAQ

    1. Is L4985A available for RFQ?

    Yes. L4985A by STMicroelectronics is available for RFQ. Submit your required quantity and our team will confirm real-time stock, lead time, and volume pricing.

    2. Why is there no fixed price for L4985A?

    Pricing for L4985A can vary by order quantity, market availability, date code, packaging, and delivery destination. Request a quote to receive the latest volume pricing.

    3. What are the key specifications of L4985A?

    L4985A is a STMicroelectronics Power Supplies with Packaging: Tube and ExportControlClassNumber: EAR99 and MoistureSensitivityLevel: 3 (168 Hours). Review the product details or submit an RFQ if you need confirmation before purchase.

    4. How fast can I get a quote for L4985A?

    Our sales team usually responds within 24 hours after receiving your RFQ. The quote may include stock status, unit price, lead time, shipping options, and available alternatives.

    5. How soon can L4985A be shipped?

    If stock is confirmed, in-stock parts can usually ship within 1–2 business days. Final lead time depends on quantity, stock source, and delivery destination.

    6. Can you suggest alternatives to L4985A?

    Yes. If L4985A is unavailable, obsolete, or does not meet your required lead time, we can help check similar STMicroelectronics Power Supplies parts or compatible alternatives.

    RFQ

    Part Number:

    L4985A

    Manufacturer:

    STMicroelectronics

    Looking for Pricing? Contact us for volume pricing.

    IMPORTANT NOTICE

    Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.

    Featured Product

    Datasheet:

    Stock Status:

    Available for RFQ

    Pricing:

    Request Volume Pricing

    Quote Response:

    Within 24 Hours

    Shipping:

    In-stock parts ship in 1–2 business days

    Specification

    Type
    Parameter
    Packaging
    Tube
    Part Status
    Active
    Manufacturer Lead Time
    25 Weeks
    Current - Startup
    400 µA
    Frequency - Switching
    65kHz
    Mode
    Continuous Conduction (CCM)
    Mounting Type
    Surface Mount
    Operating Temperature
    -40°C ~ 150°C (TJ)
    Package / Case
    8-SOIC (0.154", 3.90mm Width)
    Supplier Device Package
    8-SO
    Voltage - Supply
    10V ~ 24.5V
    ExportControlClassNumber
    EAR99
    HtsusCode
    8542.39.0060
    MoistureSensitivityLevel
    3 (168 Hours)
    ReachStatus
    REACH Unaffected
    RoHS Status
    RoHS Compliant

    Products Detail

    The L4985 is a peak current-mode PFC controller for boost converter with a proprietary multiplier “emulator” which in addition to the innovative THD optimizers guarantee very low Total Harmonic Distortion (THD) performance in all operating conditions. The device comes in a pin SO package and offers a high performance/low-component count solution for CCM-operated boost PFC pre-regulators in EN61000-3-2 and JEIDA-MITI compliant applications, in a power range that spans from few hundred W to some kW.


    The device, thanks to a proprietary off-time modulator, operates in quasi-fixed frequency in all operating conditions. Two options are available, 65 kHz for A and 130 kHz for B.


    The 800V high voltage start-up block includes also the circuitry to discharge the X-capacitors of the EMI filter to a safe level. This allows the unit to meet safety regulation (such as IEC 61010-1 or IEC 62368-1) without using the traditional discharge resistor in parallel to the X-capacitors.


    The device features low consumption and disable functions allowing usage in applications supposed to comply even with the latest energy saving requirements issued by Energy Star, the Department of Energy (DoE) in the United States, the European Code of Conduct, the European Union’s Ecodesign Directive, and other guidelines.


    In addition to an overvoltage protection able to keep the output voltage under control during transient conditions, the IC is provided also with a protection against feedback loop failures or erroneous settings and boost inductor saturation. The brownout protection function allows to design medical equipment according to the latest regulations driven by IEC 60601-1-2 which requires the output regulation in case of mains dips lasting up to 500 msec. Soft-start limits the peak current.


    The totem-pole output stage, capable of 0.7 A source and 1.5 A sink current, is suitable for big MOSFET or IGBT drives.

    Key features
    • Peak current mode CCM-operated
    • 800 V high voltage startup with integrated input voltage sensing
    • Active input filter capacitor discharge
    • Proprietary multiplier “emulator” with minimum THD of line current in all operating conditions (CCM and DCM)
    • Extremely few external components
    • Protections: feedback loop failure, OVP, OCP, inductor saturation, brown-in, brownout (compliant to medical SMPS standards)
    • Inductor current sense
    • Disable and low consumption function
    • In-rush current monitoring
    • Soft-start for smooth startup
    • 1.2% (@ Tj = 25 °C) internal reference voltage
    • 65 kHz (A version) and 130 kHz (B version) switching frequency
    • SO8 package

    Documents

    Data sheet:

    Data sheet

    Material Declaration:

    Material Declaration
    Shipping & Warranty

    Fast Dispatch: Ships in 5-7 days(in-stock parts within 1-2 days)

    Unishop Global Export: 1-7 days, $40.00

    Guaranteed Delivery: Door-to-door in 30 days

    Compliant Worldwide Shipping: DHL, FedEx, SF, and UPS.

    Feature

    • 30-Day Guarantee
      30-Day Guarantee
    • Fasted Delivery
      Fasted Delivery
    • Hassle-Free Returns
      Hassle-Free Returns
    • Secure payment method
      Secure payment method

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