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Synchronous Step-Up Converter with Ultra Low Quiescent Current
SGM66099 SGM66099.pdf

No.10805

FEATURES
? Operating Input Voltage Range: 0.9V to 5.2V
? Ultra Low Quiescent Current
     0.6μA Ultra Low IQ into VOUT Pin
     0.05μA Ultra Low IQ into VIN Pin
? 1.2MHz Fixed Frequency Operation
? Adjustable Output Voltage from 2.5V to 5.2V
? Fixed Output Voltage Versions Available
? Power-Save Mode for Improved Efficiency at Low 
  Output Power
? Regulated Output Voltage in Down Mode
? True Disconnection During Shutdown
? Up to 75% Efficiency at 10μA Load with Fixed
  Output Voltage Version
? Up to 93% Efficiency from 10mA to 300mA Load
? Operating Ambient Temperature Ranges
     Temperature Grade Y: -40℃ to +85℃
     Temperature Grade X: -40℃ to +125℃
? Available in Green WLCSP-1.22×0.83-6B and
  TDFN-2×2-6AL Packages
DESCRIPTION

The SGM66099 is a synchronous step-up converter with 0.65μA ultra low quiescent current. It is designed for products powered by alkaline battery, NiMH rechargeable battery, Li-Mn battery or rechargeable Li-Ion battery, for which high efficiency under light load condition is critical to achieve long battery life operation.

The SGM66099 step-up converter only consumes 0.65μA quiescent current under light load condition and can achieve up to 75% efficiency at 10μA load with fixed output voltage version. It can also support up to 300mA output current from 3.3V to 5V conversion, and achieve up to 93% efficiency at 200mA load.

The SGM66099 also offers both down mode and pass-through operation for different applications. In down mode, the output voltage can still be regulated at target value even when input voltage is higher than output voltage. In pass-through mode, the output voltage follows input voltage. The SGM66099 exits down mode and enters into pass-through mode when VIN > VOUT + 0.3V.

The SGM66099 supports true shutdown function when it is disabled, which disconnects the load from the input supply to reduce the current consumption.

APPLICATION CIRCUIT
PIN CONFIGUTION
網站地圖
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