The AAT2522 is a SwitchReg dual high-current step-down converter in a PB-free, space-saving 16-pin 3mm x 4mm TDFN package. The product is rated for operating temperature ranges from -40°C to +85°C. Input voltage range is 2.7V to 5.5V and output voltage range is 0.6V to VIN adjustable.
Pin Configuration
The AAT2522's 1.4MHz switching frequency can be used with small external components. The compact footprint and high efficiency make the AAT2522 ideal for portable applications. Each regulator provides up to 3.0A maximum output current. Ultra-low RDS(ON) integrated MosFeTs and 100% duty ratio operation make the AAT2522 ideal for high output voltage, high current applications that require a low voltage drop threshold.
Typical Application
The AAT2522 provides excellent transient response and high output accuracy over its entire operating range, and its unique architecture eliminates the need for external compensation components and produces lower ripple and spectral noise. Ultra-mild short-circuit protection protects AAT2522 and system components from damage.
Functional Block Diagram
Features
● Dual 3.0A Peak Output Current Regulators
● 2.7V to 5.5V Input Voltage Range
● Adjustable Output Voltage (0.6V to VIN)
● 100% Duty Cycle, Low-Dropout Operation
● Integrated 120mΩ High-Side Power MOSFET
● Integrated 85mΩ Low-Side Power MOSFET
● Low Noise Light Load Mode
● No External Compensation Required
● Very Low 90μA No-Load Operating Current
● < 1μA Shutdown Current
● Up to 95% Efficiency
● 1.4MHz Switching Frequency
● Overload and Short-Circuit Protection
● Over-Temperature Protection
● Internal Voltage Ramped Soft-Start
● Temperature Range: -40°C to +85°C
● 16-pin 3mm x 4mm TDFN Package
Applications
● Digital Cameras and Camcorders
● Netbooks and Nettops
● Portable DVD and Media Devices
● Power-Over-Ethernet
● Set-Top Boxes
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