Data Sheet

HSBT3007 module_datasheet
CONFIDENTIAL Version2.0– Jul. 13
th
HANSONG ( NANJING) TECHNOLOGY CO.,LTD
16
5 Power supply
The system have two power supply mode:
Mode1: Single 3.3V only supply.
For improving the noise, recommend adding one 220Uf capacitor on the power supply
pin
If the HSBT3007 is powered with an external 3.3 V supply connected to the VBAT line, Power_EN must
be driven high after the IC has powered up otherwise the device may not initialise properly. 
Mode2. Single 5V only supply.
A USB dongle is only powered when it is plugged into a USB port and does not need a switch to control
the power.
POWER_EN should be left unconnected as the USB supply connected to the VCHG input will enable the
IC correctly.
HANSONG