GENERAL DEscriptION
The SGM66055A is an internally compensated, 2.2MHz switching frequency, peak current mode, synchronous Boost switching converter. 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 MOSFET.
The SGM66055A-5.0 and SGM66055A-5.4 are preset for outputting 5.0V and 5.4V respectively.
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℃.
FEATURES
Operating Input Voltage Range: 2.5V to 4.5V
Fixed Output Voltages: 5.0V and 5.4V
Output Voltage Clamping: 5.7V
Up to 93% Efficieny
Quiescent Current: 23μA (TYP)
Improved Light Load Efficiency with Power-Save Mode (PSM)
Pass-through Mode by Pulling EN Low
Low Reverse Leakage Current when VOUT > VIN
Thermal Shutdown
Available in a Green WLCSP-1.21×1.21-9B Package
-40℃ to +85℃ Operating Temperature Range
APPLICATIONS
USB OTG
Class-D Audio Amplifier
Smart Phones and Tablets
Portable and Wearable Devices