Product Info

ABLUE TECHNOLOGY
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6
USB Power: The USB interface on the Module can be used when the module is in either Normal /Low
Voltage (LV) or High Voltage (HV) mode. The Module USB PHY is powered by a dedicated, internal LDO
regulator that is fed by the VBUS pin (Pin43). This means that applying power to only the VBUS pin will not
power the rest of the module. In order for the USB PHY to operate, VBUS must be externally powered.
Reference circuitry:
In this section there are 3 reference circuits to show how to design an application circuit with this module.
Reference Circuit configuration 1
Configurations summary for reference circuit 1
Config no.
Main Supply
EXT Supply Output
USB
VDDH
VDD
Config.1
Battery/Ext.regulator
N/A
Yes
Yes
Explanation of symbols in reference circuit 1 schematic
Symbol
Parameter
Min.
Typ.
Max.
Units
V
DDH
Main supply voltage in high voltage mode
2.5
3.7
5.5
V
V
BUS
Supply voltage on VBUS pin
4.35
5
5.5
V
V
EXT
Voltage output on VDD when supplied from internal
regulator (REG0). V
DDH
is the input to REG0.
1.8
3.3
V