8.2 External power supply input from VIN (7 to 12 V, 800 mA maximum)
When the STM32H5 Nucleo-144 board is power supplied by VIN (refer to Table 7 and Figure 9, the JP2 jumper
must be fitted on [3-4] (VIN 5V).
The STM32H5 Nucleo-144 board and its shield boards can be powered in three different ways from the VIN
external power supply, depending on the used voltage. The three power sources are summarized in Table 7.
Table 7. External power sources VIN (7 to 12 V)
Input
power
name
Connector pins Voltage
Maximum
current
Limitation
VIN
CN8 pin 15
CN11 pin 24
7 to 12 V 800 mA
From 7 to 12 V only and input current capability is
linked to input voltage:
• 800 mA input current when VIN = 7 V
• 450 mA input current when 7 V < VIN < 9 V
• 250 mA input current when 9 V < VIN < 12 V
Figure 9. Power supply input from VIN (7 to 12 V, 800 mA maximum)
DT59065V1
5V
3V3
VIN < 12V
8.3 External power supply input 5V_EXT (5 V, 1.3 A maximum)
When the STM32H5 Nucleo-144 board is power supplied by 5V_EXT (refer to Figure 10 and Table 8, the JP2
jumper must be fitted on [5-6] (E5V).
Table 8. Power supply input from 5V_EXT (5 V, 1.3 A)
Input power
name
Connector pins Voltage Maximum current
5V_EXT CN11 pin 6 4.75 to 5.25 V 1.3 A
Note: Refer to Using an external debug tool to program and debug the on-board STM32 about debugging when using
an external power supply.
UM3115
External power supply input from VIN (7 to 12 V, 800 mA maximum)
UM3115 - Rev 2
page 15/44
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