GENERAL DEscriptION

The SGM66055B is an internally compensated, 2.2MHz switching frequency, current mode, synchronous Boost switching converter. The SGM66055B supports up to 800mA load current from a battery as low as 2.65V, and the output voltage is fixed at 5.0V. This device turns into power-save mode to maintain high efficiency at light load currents. Its output is disconnected by the rectifier circuit during shutdown with no input to output leakage.

The SGM66055B has built-in protection features such as short-circuit protection, over-current protection and thermal shutdown.

The SGM66055B is available in a Green WLCSP-1.21×1.21-9B package.

FEATURES

• 2.5V to 4.85V Operating Input Voltage Range

• 5.0V Fixed Output Voltage

• IOUT ≥ 1A at VOUT = 5V, VIN ≥ 2.7V

• Up to 97% Efficiency

• Device Current: 24μA (TYP)

• Shutdown Current: 1μA (MAX)

• Improved Light Load Efficiency with Power-Save Mode (PSM)

• Low Reverse Leakage Current when VOUT > VIN

• Load Disconnect during Shutdown

• Thermal Shutdown

• -40℃ to +85℃ Operating Temperature Range

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

APPLICATIONS

USB OTG

Single-Cell Li-Ion Battery Power Supply

Smart Phones and Tablets

Portable and Wearable Devices