Fast Transient 800mA Step-Down Converter

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Manufacturer Skyworks


Description :

The AAT1110 SwitchReg™ is a member of Skyworks' Total Power Management IC™ (TPMIC™) product family. It is a 1.4MHz step-down converter with an input voltage range of 2.7V to 5.5V and output as low as 0.6V. Its low supply current, small size, and high switching frequency make the AAT1110 the ideal choice for portable applications. The AAT1110 is available in either a fixed version with internal feedback or a programmable version with external feedback resistors. It can deliver up to 800mA of load current while maintaining a low 27μA no load quiescent current. The 1.4MHz switching frequency minimizes the size of external components while keeping switching losses low. The AAT1110 feedback and control delivers excellent load regulation and transient response with a small output inductor and capacitor. The AAT1110 is designed to maintain high efficiency throughout the operating range and provides fast turn-on time. The AAT1110 is available in a 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
    • VOUT Fixed or Adjustable from 0.6V to VIN
    • 27μA No Load Quiescent Current
    • Output Current Up to 800mA
    • 1.4MHz Switching Frequency
    • 120μs Soft Start
    • Fast Load Transient
    • Over-Temperature Protection
    • Current Limit Protection
    • 100% Duty Cycle Low-Dropout Operation
    • <1μA of 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) 1400  
Max Input Voltage (V) 2.7 to 5.5  
Output Voltage (V) 0.6 to 5.5  
Typ. Active Current (µA) 27  
Output Capacitor Type 4.7 to 22 μF, X5R or X7R Ceramic Capacitor  
Output Current (mA) 800  
Operating Temperature (°C) -40 to +85  
Package SC70JW-8