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1A Dual Channel Current-Limited Power Switch With Output Discharge

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The AP2162A and AP2172A are dual channel current-limited integrated high-side power switches optimized for Universal Serial Bus (USB) and other hot-swap applications. The family of devices complies with USB standards and available with both polarities of Enable input. The devices have fast short-circuit response time for improved overall system robustness, and have integrated output discharge function to ensure completely control°C discharging of the output voltage capacitor. They provide a complete protection solution for application subject to heavy capacitive loads and the prospect of short circuit, and offer reverse current blocking, 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. All devices are available in SO-8, MSOP-8-EP and DFN3030E-8 packages.


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


  • Dual channel current-limited power switch with output discharge
  • Fast short-circuit response time: 2μs
  • 1.4A accurate current limiting
  • Reverse Current Blocking
  • 85mΩ on-resistance
  • Input voltage range: 2.7V – 5.5V
  • Built-in soft-start with 0.6ms typical rise time
  • Short circuit and thermal protection
  • Fault report (FLG) with blanking time (7ms typ)
  • ESD protection: 2KV HBM, 300V MM
  • Active high (AP2172A) or active low (AP2162A) enable
  • Ambient temperature range: -40°C to 85°C
  • SO-8, MSOP-8-EP and DFN3030E-8 (Exposed Pad): - Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant
  • UL Recognized, File Number E322375
  • IEC60950-1 CB Scheme Certified
  • Product Specifications

    Product Parameters

    Maximum Continuous Output Current 1 A
    Maximum Current Limit 1.7 A
    Enable Logic Active High
    Minimum Operating Voltage (V) 2.7 V
    Maximum Operating Voltage 5.5 V
    Quiescent Current Typ (μA) 115 µA
    RDS(ON) (VIN = 5V) Typ 85, 90 mΩ
    Output Discharge Yes
    OCP Output Latch Off No
    OCP Flag Yes
    Operating Ambient Temperature Range (°C) - °C
    UL Listed Yes
    NEMKO IEC 60950-1 CB Yes

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    RoHS CofC

    Orderable Part Number Buy from Distributor / Contact Sales Request Samples


    Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
    Mouser Electronics Inc. 780 10/18/2021 South America, North America, Asia, Europe, Middle East Buy Now
    Request Sample


    Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
    Rutronik GmbH 7500 10/18/2021 Germany Buy Now
    Request Sample


    Product Change Notices

    PCN # Issue Date Implementation Date Subject
    PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site