Data Sheet

SGW111X BLE Modules Series Datasheet
Page 11 of 25
7. Module Interface
7.1. Power Management
7.1.1. Module supply input (VCC & VCCH).
The SGW111X series modules uses integrated two step-down regulators (REG0 & REG1) to
transform the supply voltage presented at the VCC & VCCH pins into a stable system voltage.
Each regulator can be programmed as Low-dropout regulator (LDO) or Buck regulator (DC/DC),
depending on the operating mode of the module. There are two operating modes for the modules,
depending on the VCC and VCCH configuration:
o Normal/Low Voltage (LV) mode configuration:
Pin No
Pin Name
Connection
70
VCC
1.7 V to 3.6 V supply source input
71
VCCH
Same as VCC
o High Voltage (HV) mode configuration:
Pin No
Pin Name
Connection
70
VCC
1.8 V to 3.3 V output voltage for module internal operating supply
71
VCCH
2.5 V to 5.5 V supply source input
REMARK:
In LV or HV mode, the GPIO logic level is determined by the VCC pin.
Table 5. Power Mode Pin Connections
7.1.2. USB Power input (VBUS)
The USB interface of the SGW111X series can be used in either Normal (LV) or High Voltage mode.
With the VBUS power, the internal LDO regulator will be turned on and provide power to the USB
transceiver.
REMARK: The internal LDO regulator provides power to the USB transceiver only. For the whole module operation, please have the
module VCC and VCCH configured as LV or HV mode.