BT800 Hardware Integration Guide
Version 0.2
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/bluetooth
31
CONN-GUIDE-BT800_v0_2
13.1.2
USB dongle design example using BT800
Figure 19: USB Dongle Design Schematic
13.1.3
DC power supply options for using BT800 module
Using USB bus power (5V+/-10%)
Apply USB bus power (5V +/-10%) directly to the Pin-7 (VREG_IN_USB) and pull-high on Pin-8
(VREG_EN_RST#) to turn on the internal regulator. The BT800 module will generate 3.3V/1.8V
output on Pin-9 (VREG_IN_HV)/Pin-10 (VREG_OUT_HV) that can supply to the other DC pin of the
board.
Using DC power 3.3V
Leave the Pin-7 (VREG_IN_USB) no connection, power the on Pin-9 (VREG_IN_HV) with 3.3V and
pull-high on Pin-8 (VREG_EN_RST#) to turn on the internal regulator. The BT800 module will
generate 1.8V output on Pin-10 (VREG_OUT_HV) which can supply to the other DC pin of the
board.
