600mA Step-Down Converter

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Manufacturer Skyworks


Description :

The AAT1106 is a 1.5MHz constant frequency current mode PWM step-down SwitchReg™ converter with a unique adaptive slope compensation scheme allowing the device to operate with a lower range of inductor values to optimize size and provide efficient operation. It is ideal for portable equipment powered by single-cell Lithium-ion batteries and is optimized for high efficiency, achieving levels up to 96%. The AAT1106 can supply up to 600mA load current from a 2.5V to 5.5V input voltage and the output voltage can be regulated as low as 0.6V. The device also can run at 100% duty cycle for low dropout operation, extending battery life in portable systems. In addition, light load operation provides very low output ripple for noise sensitive applications and the 1.5MHz switching frequency minimizes the size of external components while keeping switching losses low. The AAT1106 is available in a Pb-free, low-profile 5-pin TSOT23 package, and is rated over the -40°C to +85°C temperature range.

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    • VIN Range: 2.5V to 5.5V
    • VOUT: Adjustable 0.6V to VIN
    • Up to 600mA Output Current
    • Up to 96% Efficiency
    • 1.5MHz Switching Frequency
    • 100% Duty Cycle Dropout Operation
    • Adaptive Slope Compensated Current Mode Control for Excellent Line and Load Transient Response
    • <1μA Shutdown Current
    • Short-Circuit and Thermal Fault Protection
    • TSOT23-5 Package
    • -40°C to +85°C Temperature Range

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Features Similar products
Control scheme Slope Compensated Current Mode PWM Control  

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Switching frequency (kHz) 1500  
Max Input Voltage (V) 2.5 to 5.5  
Output Voltage (V) 0.6 to 5.5  
Typ. Active Current (µA) 270  
Output Capacitor Type X5R or X7R Ceramic Capacitor  
Output Current (mA) 600  
Operating Temperature (°C) -40 to +85  
Package TSOT23-5