External Power Supply Input From Vin (7 To 12 V, 800 Ma Maximum); External Power Supply Input 5V_Ext (5 V, 1.3 A Maximum); Table 7. External Power Sources Vin (7 To 12 V); Table 8. Power Supply Input From 5V_Ext (5 V, 1.3 A) - ST STM32H5 Nucleo-144 User Manual

Warning:
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
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
Input
power Connector pins
name
VIN
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
jumper must be fitted on [5-6] (E5V).
Input power
name
5V_EXT
Note: Refer to Using an external debug tool to program and debug the on-board STM32
an external power supply.
UM3115 - Rev 1
In case the maximum current consumption of the STM32H5 Nucleo-144 board and its shield
boards exceed 500 mA, it is mandatory to power the STM32H5 Nucleo-144 board, using an
external power supply connected to 5V_EXT, VIN, or 3V3.
Table 7. External power sources VIN (7 to 12 V)
Voltage
CN8 pin 15
7 to 12 V
CN11 pin 24
Figure 9. Power supply input from VIN (7 to 12 V, 800 mA maximum)
Table 8. Power supply input from 5V_EXT (5 V, 1.3 A)
Connector pins
CN11 pin 6
External power supply input from VIN (7 to 12 V, 800 mA maximum)
Maximum
current
From 7 to 12 V only and input current capability is
linked to input voltage:
800 mA
• 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
5V
3V3
VIN < 12V
Voltage
4.75 to 5.25 V
Table 7 and Figure 9, the JP2 jumper
Table
Limitation
Figure 10 and Table 8, the JP2
Maximum current
1.3 A
about debugging when using
UM3115
7.
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