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AIC3420

2.5A Io Synchronous Step-Up Converter

FEATURES
  • VIN Start Up Voltage: 0.9V
  • Output Voltage Range: from 2.5V to 5.5V.
  • Up to 94% Efficiency
  • Up to 2.5A Continuous Output Current
  • Allow EN pin be Floating
  • Built-in current mode compensation
  • Built-in Protection: Over Current, Over Voltage, Over Temperature
  • Optional Active High/Low EN pin
  • Logic Controlled Shutdown: < 1uA
  • Output Disconnect by Shutdown Function
  • Built-in Soft Start
APPLICATIONS
  • Li-Ion Type Battery Operated Products
  • Power Bank
  • Handheld Devices
  • Portable Products
DESCRIPTION
The AIC3420 is a high efficiency, step-up DC/DC con-verter with high light load efficiency. The true output disconnect function eliminates inrush current and al-lows Vout to go to zero during shutdown.
The AIC3420 is suited for high current boost application such as battery backup supplies or wireless devices powered by one Li-Ion battery or two Alkaline, Ni-Cd, Ni-MH battery.
The device includes a 50mΩ N-Ch MOSFET switch and a 60mΩ P-Ch MOSFET switch; it can provide high efficiency at 2.5A continuous output current. High effi-ciency is achieved at light load when PSM Mode oper-ation is entered, where the IC’s quiescent current is lower than 20μA on Vout.
The AIC3420 is available in DFN-10 (3x3x0.75-0.5) and SOP-8 Exposed Pad package.
TYPICAL APPLICATION


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