GENERAL DEscriptION
The SGM66055 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 0.9A. This device turns into power-saving 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. Its output is disconnected by the rectifier circuit during shutdown with no input to output leakage.
The SGM66055-4.5 is available in the Green WLCSP-1.21×1.21-9B package; the SGM66055-5.0 is available in the Green WLCSP-1.21×1.21-9B and TDFN-2×3-8BL packages.
FEATURES
Operating Input Voltage Range: 2.5V to 4.5V
Fixed Output Voltages: 4.5V and 5.0V
Output Voltage Clamping: 5.7V
Up to 93% Efficieny
Quiescent Current: 23μA (TYP)
Shutdown Current: 1μA (MAX)
Improved Light Load Efficiency with Power-Save Mode (PSM)
Load Disconnect During Shutdown
Low Reverse Leakage Current when VOUT > VIN
Thermal Shutdown
-40℃ to +85℃ Operating Temperature Range
Available in Green WLCSP-1.21×1.21-9B and TDFN-2×3-8BL Packages
APPLICATIONS
USB OTG
Class-D Audio Amplifier
Smart Phones and Tablets
Portable and Wearable Devices