Diodes Incorporated AP22654Q/AP22655Q Adjustable Power Switches
Diodes Incorporated AP22654Q/AP22655Q Precision Adjustable Current-Limit Power Switches are optimized for applications that require precision current limiting or to deliver up to 3.1A of continuous load current during heavy loads/short circuits. The AP22654Q/AP22655Q feature a pin-strapped current-limit threshold between 0.4A and 3.56A (typ) through an external resistor. The device's ±12% current limit accuracy is achieved by utilizing high current limit settings. The rise and fall times are also controlled to minimize current surges during turn on/off.
The Diodes Inc, AP22654Q/AP22655Q switches provide a fast short-circuit response time for improved overall system robustness. The devices supply a complete protection solution for applications subject to heavy capacitive loads and the prospect of short circuits. This solution combines reverse current blocking and limiting, overcurrent, overtemperature, short-circuit protections, controlled rise time, and undervoltage lockout functionality. Furthermore, a 7ms deglitch capability on the open-drain Flag output prevents false overcurrent reporting and does not require any external components.
The AP22654Q and AP22655Q limit the output current to a safe level when the output current exceeds the current-limit threshold and are available in a TSOT26 (Type A1) package.
Features
- 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 from 0.4A to 3.56A
- ±12% Accurate adjustable current limit, 1.0A with RLIM = 6.8kΩ
- Constant current during overcurrent
- 5µs (typ) Fast short-circuit response time
- Reverse current blocking during shutdown and reverse current limiting during enable
- 3.0V to 5.5V Operating range
- 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 of 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)
- UL Recognized, file number E322375, Vol. 1
- IEC62368-1 CB scheme certified
- Totally lead-free and fully RoHS compliant
- Halogen and antimony-free “Green” device
Applications
- Automotive ECU supply rail power distribution and switching
- Automotive ECU supply rail precision current limiting
Typical Applications Circuit
Functional Block Diagram
Pin Assignments
