3.3MHz, Fast Transient 1.5A Step-Down Converter in 2mm x 2mm Package

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Manufacturer Skyworks


Description :

The AAT2113B SwitchReg™ is a 1.5A step-down converter with a typical input voltage of 3.3V and a fixed output voltage of 1.2V or an adjustable output. The 3.3MHz switching frequency enables the use of small external components. The ultra-small 2mm x 2mm footprint and high efficiency make the AAT2113B an ideal choice for portable applications. The AAT2113B delivers 1.5A maximum output current while consuming only 55μA no-load quiescent current. Low RDS(ON) integrated MOSFETs and 100% duty cycle operation make the AAT2113B the ideal choice for high output voltage, high current applications which require a low dropout threshold. The AAT2113B provides excellent transient response and output accuracy across the operating range. No external compensation is required. The AAT2113B maintains high efficiency throughout the load range. The unique low-noise architecture reduces ripple and spectral noise. The AAT2113B automatically optimizes efficiency during Light Load mode (LL) and maintains constant frequency and low output ripple during PWM mode. Over-temperature and short circuit protection safeguard the AAT2113B and system components from damage. The AAT2113B is available in a Pb-free, ultra-small, low profile, 8-pin 2mm x 2mm FTDFN package. The product is rated over a temperature range of -40°C to 85°C.

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    • 5mm x 5mm Total Solution Size
    • 1.5A Maximum Output Current
    • Tiny 0.47μH Chip Inductor
    • Excellent Transient Response
    • Input Voltage: 2.7V to 5.5V
    • Ultra-small, Low Profile 8-pin 2mm x 2mm FTDFN Package
    • Fixed or Adjustable Output Voltage Options:
    • Fixed Output Voltage: 1.2V
    • Adjustable Output Voltage: 1.0V to 2.5V
    • High Efficiency, Low Noise Architecture
    • 3.3MHz Switching Frequency
    • No External Compensation Required
    • 55μA No Load Quiescent Current
    • 100% Duty Cycle Low-Dropout Operation
    • Internal Soft Start
    • Over-Temperature and Current Limit Protection
    • <1μA Shutdown Current
    • -40°C to 85°C Temperature Range

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Features Similar products
Control scheme Peak Current Mode Control  

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Switching frequency (kHz) 3300  
Max Input Voltage (V) 2.7 to 5.5  
Output Voltage (V) 2.5  
Typ. Active Current (µA) 55  
Typ. Dropout Voltage @ Max. lout (mV) 200  
Output Capacitor Type 10 to 22 μF, X5R or X7R Ceramic Capacitor  
Output Current (mA) 1500  
Operating Temperature (°C) -40 to +85  
Package FTDFN22-8