Low Noise, Fast Transient 1A Step-Down Converter

Manufacturer's part number :


NATO number :


Manufacturer Skyworks


Description :

The AAT2148 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 AAT2148 incorporates a unique low noise architecture which reduces ripple and spectral noise. The AAT2148 is available in fixed voltage versions with internal feedback and a programmable version with external feedback resistors. It can deliver 1A 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 AAT2148 is designed to maintain high efficiency throughout the operating range, which is critical for portable applications. The AAT2148 is available in the Pb-free, thermally enhanced 3x3mm QFN-16 package and is rated over the -40°C to +85°C temperature range.

View our wide range of Analogue / Mixed signal products

View our portfolio of Semiconductors

See all products from our supplier Skyworks



  • Quote and availability


    • 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
    • 1A 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
    • QFN33-16 Package
    • Temperature Range: -40°C to +85°C

    How wireless works

Features Similar products
Control scheme Slope Compensated Peak Current Mode Control  

  similar products found

Search similar products
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) 1000  
Operating Temperature (°C) -40 to +85  
Package QFN33-16