Diodes IncorporatedAP22654QWU-7Interruttori di potenza USB

The AP22654Q is a single-channel, adjustable, current-limited switch optimized for automotive applications that require precision current limiting.

Its programmable current-limit threshold adjusts between 400mA and 3500mA (typical) via an external resistor, enabling it to support continuous load currents up to 3.1A.

The AP22654Q’s active-low enable feature a low 50mΩ RDS(on) high-side MOSFET, which offers lower power dissipation and lower inline voltage drops. Output rise and fall times are controlled, which helps minimize current surges during turn on/off, enabling it to be used in applications subject to heavy capacitive loads.

The device has a comprehensive suite of protection features including short-circuit, reverse-current blocking and limiting, overcurrent, overtemperature, and short-circuit protection, as well as under-voltage lockout functionality. Its open-drain Fault Flag has a 6ms deglitch time which prevents false overcurrent reporting.

It is available in the TSOT26 (Type A1) package and supports ambient temperatures from -40ºC up to +125ºC.

Key Features and Benefits

•  The AP22654Q and AP22655Q, with their 3.5A adjustable current limit, provide robust automotive USB port protection.


• •  Tight Tolerance Adjustable Current Limit from 0.4A to 3.5A
  Implements a single device across platforms with one resistor change and allows closer matching of current limits to system requirements
• •  50mΩ R_DS(ON) High-Side MOSFET
  Offers lower power dissipation and lower inline voltage drops
• •  Fast Short-Circuit Response Time: 5μs
  Prevents unnecessary system shutdown or restart, which improves system robustness
• •  Reverse-Current Protection: Blocking During Shutdown and Current Limiting While Enabled
  Protects system from reverse currents when peripherals are externally powered
• •  Robust Protection Features Set with Fault Reporting Overcurrent (Limiting), Output Overvoltage, and Thermal Shutdown
  Improved robustness of USB ports

Applications

• •  Automotive USB Port overcurrent protection:
• •  USB-C® port in infotainment
• •  USB ports in rear cluster