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The AP22654Q and AP22655Q 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.
AP22654Q and AP22655Q 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.
AEC Qualified to AEC-Q100 Grade 1 Offering -40°C to +125°C Ambient Operating Temperature Range
Up to 3.1A Maximum Load Current
Accurate Adjustable Current Limit, 0.4A to 3.56A
±12% Accurate Adjustable Current Limit, 1.0A with RLIM = 6.8kΩ
Constant Current During Overcurrent
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 1.0ms Typical Rise Time
Overcurrent, Reverse Output Current/Voltage and Thermal Protection
Fault Report (FAULT) with Blanking Time
ESD Protection: 2kV HBM, 1.5kV CDM
Active Low (AP22654Q) or Active High (AP22655Q) Enabled
TSOT26 (Type A1) Package: Available in “Green” Molding Compound (No Br, Sb)
15kV ESD Protection per IEC 61000-4-2 (With Ext. Capacitance)
Halogen and Antimony Free. “Green” Device (Note 3)
The AP22654Q and AP22655Q are suitable for automotive applications requiring specific change control; these parts are AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. https://www.diodes.com/quality/product-definitions/
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