The SGM66055A is an internally compensated, 2.2MHz switching frequency, current mode, synchronous step-up switching regulator. 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 FET.
The SGM66055A-5.0 and SGM66055A-5.4 are preset for outputting 5.0V and 5.4V.
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℃.
93% Efficient Synchronous Boost Converter
Device Quiescent Current: 23μA (TYP)
Operating Input Voltage Range: 2.5V to 4.5V
Fixed Output Voltages: 5.0V and 5.4V
Output Voltage Clamping: 5.7V
Power-Save Mode for Improved Efficiency at Low Output Power
Pass-through Mode by Pulling EN Low
Low Reverse Leakage Current when VOUT > VIN
Over-Temperature Protection
Available in a Green WLCSP-1.21×1.21-9B Package
-40℃ to +85℃ Operating Temperature Range
Class-D Audio Amplifier and USB OTG Supply
Boost for Low-Voltage Li-Ion Batteries
Smart Phones, Tablets, Portable Devices, Wearables
| Part Number | Status | Package | Pins | Pb-Free | Temp Range |
| SGM66055A-5.4YG/TR | Production | WLCSP-1.21×1.21-9B | 9 | Y | -40℃ to +85℃ |
| SGM66055A-5.0YG/TR | Production | WLCSP-1.21×1.21-9B | 9 | Y | -40℃ to +85℃ |
