Diodes Menu Close

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

Back to Power Switches - Automotive


Precision-adjustable Current-limited Power Switches

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


The AP22653Q is single-channel, precision-adjustable, current-limited switch optimized for applications that require precision current-limiting, or to provide up to 1.5A of continuous load current during heavy loads/short circuits. This device offers a programmable current-limit threshold between 125mA and 1735mA (typ) via an external resistor. Current-limit accuracy ±7% can be achieved at high current-limit settings. The rise and fall times are controlled to minimize current surges during turn on/off.

The device has fast short-circuit response time for improved overall system robustness. The device provides a complete protection solution for applications subject to heavy capacitive loads and the prospect of short circuit, offering reverse current blocking and limiting, overcurrent, overtemperature, and short-circuit 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 AP22653Q limits the output current to a safe level when the output current exceeds current-limit threshold. The device is available in the SOT26 (Type A1) package.


  • Up to 1.5A Maximum Load Current
  • Accurate Adjustable Current-Limit, 125mA to 1735mA
  • ±7% Accurate Adjustable Current-Limit, 1.735A with RLIM = 15kΩ
  • Constant-Current Version
  • Fast Short-Circuit Response Time: 5µs (Typ.)
  • Reverse Current Blocking During Shutdown and Reverse Current Limiting During Enable
  • Operating Range: 3.0V to 5.5V
  • Built-In Soft-Start with 0.5ms Typical Rise Time
  • Over-Current, Output Over-Voltage and Thermal Protection
  • Fault Report (FAULT) with Blanking Time
  • ESD Protection: 2kV HBM, 750V CDM
  • Enable Active High
  • SOT26 Package: Available in “Green” Molding Compound (No Br,Sb)
  • 16kV ESD Protection per IEC61000-4-2 (With External Capacitance)
  • UL Recognized.
  • IEC60950-1 CB Scheme Certified
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Totally Lead-Free & Fully RoHS Compliant 
  • Halogen and Antimony Free. “Green” Device 
  • The AP22653Q is suitable for automotive applications
    requiring specific change control; this part is AEC-Q100
    qualified, PPAP capable, and manufactured in IATF 16949
    certified facilities.


  • Laptops
  • USB Ports/Hubs
  • Automotive ECU Supply Rail Power Distribution and Switching
  • Automotive ECU Supply Rail Precision Current-Limiting

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Automotive
Maximum Continuous Output Current (A) 1.5
(MAX) Maximum Current Limit Fixed (A) 1.856
Channels 1
Enable Logic Active High
Minimum Operating Voltage (V) 3
Maximum Operating Voltage (V) 5.5
Quiescent Current Typ (µA) 120
RDS(ON) (VIN = 5V) Typ (mΩ) 55
Output Discharge Yes
(TYP) Output Rise Time mS 0.5
OCP Output Latch Off No
OCP Flag Yes
Power Good No
Operating Ambient Temperature Range (°C) -40 to 125
UL Certificate Yes

Related Content



Technical Documents

Recommended Soldering Techniques



Orderable Part Number Buy from Distributor / Contact Sales Request Samples


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Avnet EU 3000 11/30/2022 Germany Buy Now
Mouser Electronics Inc. 41810 11/30/2022 South America, North America, Asia, Europe, Middle East Buy Now
Digi-Key Electronics 24532 11/29/2022 Europe, Asia, North America Buy Now
Request Sample


Related Protocol FAQs