2.5A Low Noise Step-Down Converter

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Manufacturer Skyworks


Description :

The AAT2153 SwitchReg is a 2.5A step-down converter with an input voltage range of 2.7V to 5.5V and an adjustable output voltage from 0.6V to VIN. The 1.4MHz switching frequency enables the use of small external components. The small footprint and high efficiency make the AAT2153 an ideal choice for portable applications. The AAT2153 delivers 2.5A maximum output current while consuming only 42μA of no-load quiescent current. Ultra-low RDS(ON) integrated MOSFETs and 100% duty cycle operation make the AAT2153 an ideal choice for high output voltage, high current applications which require a low dropout threshold. The AAT2153 provides excellent transient response and high output accuracy across the operating range. No external compensation components are required. The AAT2153 maintains high efficiency throughout the load range. The AAT2153's unique architecture produces reduced ripple and spectral noise. Over-temperature and short-circuit protection safeguard the AAT2153 and system components from damage. The AAT2153 is available in a Pb-free, space-saving 16-pin 3x3mm QFN package. The product is rated over an operating temperature range of -40°C to +85°C.

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    • 2.5A Maximum Output Current
    • Input Voltage: 2.7V to 5.5V
    • Output Voltage: 0.6V to VIN
    • Up to 95% Efficiency
    • Low Noise Light Load Mode
    • 42μA No Load Quiescent Current
    • No External Compensation Required
    • 1.4MHz Switching Frequency
    • 100% Duty Cycle Low-Dropout Operation
    • Internal Soft Start
    • Over-Temperature and Current Limit Protection
    • <1μA Shutdown Current
    • 16-Pin 3x3mm QFN Package
    • Temperature Range: -40°C to +85°C

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Features Similar products
Control scheme Peak Current Mode  

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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) 42  
Typ. Dropout Voltage @ Max. lout (mV) 200  
Output Capacitor Type 10 to 22 μF, X5R or X7R Ceramic Capacitor  
Output Current (mA) 2500  
Operating Temperature (°C) -40 to +85  
Package QFN33-16