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Precision Adjustable Current-Limited Power Switches
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The AP22654 and AP22655 are single channel precision adjustable current-limit switches optimized for applications that require precision current limiting, or to provide up to 3.1A of continuous load current during heavy loads/short circuits. These devices offer a pin-strapped current-limit threshold between 0.4A and 3.56A (typ) via an external resistor. Current limit accuracy ±12% can be achieved at high current limit settings. The rise and fall times are controlled to minimize current surges during turn on/off.
The devices have fast short-circuit response time for improved overall system robustness. They provide 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 protections, as well as controlled rise time and undervoltage lockout functionality. A 7ms deglitch capability on the open-drain Flag output prevents false overcurrent reporting and does not require any external components.
AP22654 and AP22655 limit the output current to a safe level when the output current exceeds current-limit threshold.
Both devices are available in TSOT26 (Type A1) package.
|Compliance (Only Automotive supports PPAP)||Standard|
|Maximum Continuous Output Current (A)||3.1|
|(MAX) Maximum Current Limit Fixed (A)||3.5|
|Enable Logic||Active High|
|Minimum Operating Voltage (V)||3|
|Maximum Operating Voltage (V)||5.5|
|Quiescent Current Typ (µA)||90|
|RDS(ON) (VIN = 5V) Typ (mΩ)||50|
|Reverse Current Block||Yes|
|(TYP) Output Rise Time mS||1|
|OCP Output Latch Off||No|
|Operating Ambient Temperature Range (°C)||-40 to 85|