Low Noise, Fast Transient 600mA Step-Down Converter

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Manufacturer Skyworks


Description :

The AAT2146 SwitchReg is a 2MHz step-down converter with an input voltage range of 2.7V to 5.5V and output voltage as low as 0.6V. It is optimized to react quickly to a load variation. The AAT2146 incorporates a unique low noise architecture which reduces ripple and spectral noise. The AAT2146 is available in fixed voltage versions with internal feedback and a programmable version with external feedback resistors. It can deliver 600mA of load current while maintaining a low 37µA no load quiescent current. The 2MHz switching frequency minimizes the size of external components while keeping switching losses low. The AAT2146 is designed to maintain high efficiency throughout the operating range, which is critical for portable applications. The AAT2146 is available in the Pb-free, space-saving 2.0x2.1mm SC70JW-8 package and is rated over the -40°C to +85°C temperature range.

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    • VIN Range: 2.7V to 5.5V
    • Low Noise Light Load Mode
    • Low Ripple PWM Mode
    • VOUT Fixed or Adjustable from 0.6V to VIN
    • 37μA No Load Quiescent Current
    • Up to 98% Efficiency
    • 600mA Max Output Current
    • 2MHz Switching Frequency
    • 150μs Soft Start
    • Fast Load Transient
    • Over-Temperature Protection
    • Current Limit Protection
    • 100% Duty Cycle Low-Dropout Operation
    • <1μA Shutdown Current
    • SC70JW-8 Package
    • Temperature Range: -40°C to +85°C

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Features Similar products
Control scheme Slope Compensated Peak Current Mode Control  

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Switching frequency (kHz) 2000  
Max Input Voltage (V) 2.7 to 5.5  
Output Voltage (V) 0.6 to 5.5  
Typ. Active Current (µA) 37  
Output Capacitor Type 4.7 to 10 μF, X5R or X7R Ceramic Capacitor  
Output Current (mA) 600  
Operating Temperature (°C) -40 to +85  
Package SC70JW-8