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The AP2553 is a single channel precision adjustable current-limited switches optimized for applications that require up to 2.1A of continuous load current during heavy loads/short circuits. It offers a programmable current-limit threshold between 75mA and 2.35A via an external resistor. Current limit accuracy ±6% can be achieved at high current-limit settings. It has a fast short-circuit response time for improved overall system robustness. It provides reverse current blocking and limiting, over-current, over-temperature and short-circuit protection, as well as control°C rise time and under-voltage lockout functionality. A 7ms deglitch capability on the open-drain Flag output prevents false over-current reporting and does not require any external components.

The AP2553 limits the output current to a safe level when the output current exceeds current-limit threshold. It is available in U-DFN2020-6 and SOT26 packages with green mold compounds.

Other members of this family include:
AP2552 has opposite polarity enable to AP2553 and limits the output current to a safe level when the output current exceeds current-limit threshold
AP2552A/53A provides latch-off function during over-current or reverse-voltage conditions


  • Set-Top-Boxes
  • LCD TVs & Monitors
  • Residential Gateways
  • Laptops, Desktops, Servers, e-Readers, Printers, Docking Stations, HUBs
  • Product Specifications

    Product Parameters

    Maximum Continuous Output Current 2.1 A
    Maximum Current Limit 2.35 A
    Enable Logic Active High
    Minimum Operating Voltage 2.7 V
    Maximum Operating Voltage 5.5 V
    Quiescent Current Typ 60 µA
    RDS(ON) (VIN = 5V) Typ 70 mΩ
    Output Discharge Yes
    OCP Output Latch Off No
    OCP Flag Yes
    Operating Ambient Temperature Range -40 to 85 °C
    UL Listed Yes
    NEMKO IEC 60950-1 CB Yes

    Related Content

    SOT26 (SC74R)
    U-DFN2020-6 (Type C)

    Technical Documents

    Recommended Soldering Techniques


    RoHS CofC

    Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
    AP2553AFDC-7 RS Components 10 8/11/2020 Buy Now England
    AP2553AFDC-7 RS Components Ltd. 10 8/11/2020 Buy Now Japan
    AP2553AW6-7 Digi-Key Electronics 18546 8/12/2020 Buy Now United States
    AP2553AW6-7 Future Electronics 3000 8/11/2020 Buy Now Canada
    AP2553AW6-7 RS Components 2540 8/11/2020 Buy Now England
    AP2553AW6-7 RS Components Ltd. 2540 8/11/2020 Buy Now Japan
    AP2553FDC-7 Digi-Key Electronics 1716 8/12/2020 Buy Now United States
    AP2553FDC-7R Digi-Key Electronics 3000 8/12/2020 Buy Now United States
    AP2553W6-7 Digi-Key Electronics 53891 8/12/2020 Buy Now United States
    AP2553W6-7 Avnet 3000 8/11/2020 Buy Now United States
    AP2553W6-7 Future Electronics 6000 8/11/2020 Buy Now Canada
    AP2553W6-7 Future Electronics - Asia 108000 8/11/2020 Singapore
    AP2553W6-7 RS Components 1760 8/11/2020 Buy Now England
    AP2553W6-7 RS Components Ltd. 1560 8/11/2020 Buy Now Japan


    Product Change Notices

    PCN # Issue Date Subject
    PCN-2447 2020-01-30 Additional Qualified (FAB) Wafer Fab Source, (A/T) Assembly/Test Site, and (BOM) Bill of Materials