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 fre 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

• 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