Diodes Incorporated

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.


Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

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AP22811B (Not Recommended for new design)

NRND = Not Recommended for New Design

Single Channel Power Distribution Load Switch

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The AP22811 is a single channel current-limit integrated high-side power switch optimized for Universal Serial Bus (USB) and other hotswap applications. The family of devices complies with USB standards and is available with both polarities of Enable input.

The device has fast short-circuit response time for improved overall system robustness, and has an integrated output discharge function to ensure completely controlled discharging of the output voltage capacitor. They provide a complete protection solution for applications subject to heavy capacitive loads and the prospect of short circuit, and offer reverse current blocking, overcurrent, overtemperature and shortcircuit protection, as well as controlled rise time and undervoltage lockout functionality. A 6ms deglitch capability on the open-drain Flag output prevents false overcurrent reporting and does not require any external components.

The AP22811 is available in standard Green SOT25 and MSOP-8 packages with RoHS compliance.


  • Input Voltage Range: 2.7V to 5.5V
  • 50mΩ On-Resistance
  • Built-in Soft-Start with 0.6ms Typical Rise Time
  • Fault Report (FLG) with Blanking Time (6ms typ)
  • ESD Protection: 2kV HBM, 200V MM
  • Active Low (B) or Active High (A) Enable
  • Protection
    • Overcurrent with Auto Recovery
    • Short Circuit with Auto Recovery
    • Overtemperature with Auto Recovery
  • Output Reverse Current/Voltage Protection
  • Thermally Efficient Low Profile Package
  • UL Recognized, File Number E322375
  • IEC60950-1 CB Scheme Certified
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/


  • Integrated load switches in Ultrabook PC’s
  • Power up/down sequencing in Ultrabook PC’s
  • Notebooks
  • Netbooks
  • Set-top boxes
  • SSD (solid state drives)
  • Consumer electronics
  • Tablet PCs
  • Telecom systems

Product Specifications

Product Parameters

(MAX) Maximum Current Limit Fixed (A) 3.2
(TYP) Output Rise Time mS 2.1
Channels 1
Compliance (Only Automotive supports PPAP) Standard
Enable Logic Active Low
Maximum Continuous Output Current 2
Maximum Continuous Output Current (A) 2
Maximum Operating Voltage 5.5
Maximum Operating Voltage (V) 5.5
Minimum Operating Voltage (V) 2.7
Minimum Operating Voltage (V) 2.7
OCP Flag Yes
OCP Output Latch Off No
Operating Ambient Temperature Range (°C) -40 to 85
Operating Ambient Temperature Range (°C) -40 to 85
Output Discharge Yes
Power Good No
Quiescent Current Typ (mA) 80
Quiescent Current Typ (µA) 80
RDS(ON) (VIN = 5V) Typ 50
RDS(ON) (VIN = 5V) Typ (mΩ) 50
Reverse Current Block Yes
UL Certificate Yes
UL Listed Yes

Related Content


Technical Documents

Recommended Soldering Techniques



Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

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