ST STM32U5G9J-DK2 - Power Supply Options; Power Source Selection

6.5 Power supply
Figure 9. STM32U5G9J-DK2 power diagram
USB-C
®
connector
VBUS
USB-C
®
connector
Overvoltage
protection
VBUS_STLK 5V_STLK
LDO
ARDUINO
®
connector
Power
selection
5V
ST-LINK
3V3_STLK
VBUS_STLK
5V_EXT
5V_USB
5V_VEXT
5V_USB
LDO or
DC/DC
LDO
VEXT
3V3
LCD
MCU
Octo-SPI
Backlight
5V
Overvoltage
protection
DC/DC discrete
components
1V1
LEDs
6.5.1 Power source selection
The Discovery board product is designed to be powered by a 5 V DC power supply. It is possible to configure the
power source selection with the JP1 header (
Figure 10) to use any of the three sources described in Table 7.
Figure 10. 5 V power source selection
DT59223V1
Power source
header (JP1)
UM3223
Hardware layout and configuration
UM3223 - Rev 1
page 13/37