2.5A Low-Noise Fast Transient 3MHz Step-Down Regulator

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Manufacturer Skyworks


Description :

The AAT2114A SwitchReg™ step-down converter deliv¬ers up to 2.5A to support the adjustable 1.0V to VIN output from the 2.7V to 5.5V input source. The 3MHz switching frequency allows a high-bandwidth design that minimizes the external LC component requirements. The AAT2114A high-frequency converter consumes only 70μA no-load quiescent current. The internally compen¬sated, high-frequency, current-mode control scheme pro¬vides excellent transient response, minimal output ripple, and reduced spectral noise. Additionally, the AAT2114A provides tight output accuracy across the entire load and input voltage operating ranges. The regulator maintains high efficiency by integrating the high-side and low-side MOSFETs and designing the gate drivers to minimize dead-time switching losses. The regulator also reduces the switching frequency under light load conditions, minimizing power loss over the entire load range. For system fault protection, the AAT2114A includes over-temperature and short-circuit current-limit protection to safeguard the AAT2114A and system components from overload conditions. The compact 3mm x 3mm QFN package footprint, mini¬mal LC requirements, and high efficiency make the AAT2114A an ideal choice for low-power portable applica¬tions operating from a Li-ion/polymer battery.

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    • 2.5A Maximum Output Current
    • 3MHz Switching Frequency
    • Stable With 20μF Output Capacitor
    • 2.7V to 5.5V Input Voltage Range
    • Adjustable 1.0V to VIN Output Voltage
    • Up to 95% Efficiency
    • Excellent Current-Mode Transient Response
    • Low-Noise Light-Load Architecture
    • 70μA No Load Quiescent Current
    • No External Compensation Required
    • Internal Soft Start
    • Over-Temperature and Current-Limit Protection
    • <1μA Shutdown Current
    • -40°C to +85°C Temperature Range
    • 16-Pin, 3mm x 3mm QFN Package

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Features Similar products
Control scheme Current Mode Control  

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Switching frequency (kHz) 3000  
Max Input Voltage (V) 2.7 to 5.5  
Output Voltage (V) 1 to 5.5  
Typ. Active Current (µA) 70  
Output Capacitor Type 22 μF, X5R or X7R Ceramic Capacitor  
Output Current (mA) 2500  
Operating Temperature (°C) -40 to +85  
Package QFN33-16