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          SGM66055A

           

          2.2MHz, Fixed Output Synchronous Tiny Step-Up Converter with a 3A Switch
           
          2.2MHz, Fixed Output Synchronous Tiny Step-Up Converter with a 3A Switch
          GENERAL DESCRIPTION

          The SGM66055A is an internally compensated, 2.2MHz switching frequency, current mode, synchronous step-up switching regulator. Even below the minimum system battery voltage, the device maintains the output voltage regulation for a minimum output load current of 0.7A. This device turns into power-save mode to maintain high efficiency by lowering switching frequency. With its anti-ringing circuitry damping the charge in parasitic capacitor, it reduces EMI interference significantly.

          In addition, the SGM66055A device can also support the pass-through mode by pulling EN to low. In this mode, the output voltage follows the input voltage with a voltage drop by the resistance of the inductor and high-side FET.

          The SGM66055A-5.0 and SGM66055A-5.4 are preset for outputting 5.0V and 5.4V.

          The device is available in a Green WLCSP-1.21×1.21-9B package and operates over an ambient temperature range of -40 to +85℃.

          PIN CONFIGURATIONS

          66055A.png

          FEATURES
          • 93% Efficient Synchronous Boost Converter

          • Device Quiescent Current: 23μA (TYP)

          • Operating Input Voltage Range: 2.5V to 4.5V

          • Fixed Output Voltages: 5.0V and 5.4V

          • Output Voltage Clamping: 5.7V

          • Power-Save Mode for Improved Efficiency at Low Output Power

          • Pass-through Mode by Pulling EN Low

          • Low Reverse Leakage Current when VOUT > VIN

          • Over-Temperature Protection

          • Available in a Green WLCSP-1.21×1.21-9B Package

          • -40 to +85 Operating Temperature Range

          APPLICATIONS

          Class-D Audio Amplifier and USB OTG Supply

          Boost for Low-Voltage Li-Ion Batteries

          Smart Phones, Tablets, Portable Devices, Wearables

          ORDERING INFORMATION
          Part NumberStatusPackagePinsPb-FreeTemp Range
          SGM66055A-5.4YG/TRProductionWLCSP-1.21×1.21-9B9Y-40℃ to +85℃
          SGM66055A-5.0YG/TRProductionWLCSP-1.21×1.21-9B9Y-40℃ to +85℃

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