Hardware layout and configuration UM1974
22/82 DocID028599 Rev 7
6.4.2 External power supply inputs
The Nucleo-144 board and its shield boards can be powered in three different ways from an
external power supply, depending on the voltage used. The three power sources are
summarized in the
Table 7.
When STM32 Nucleo-144 board is power supplied by V
IN
or E5V, the jumper configuration
must be the following:
• Jumper JP3 on pin 1 and pin 2 for E5V or jumper JP3 on pin 5 and pin 6 for V
IN
• Jumper JP1 OFF
The 5 V power source is selected by the jumper JP3 as shown in Table 8.
Table 7. External power sources
Input power
name
Connector
pins
Voltage
range
Max current Limitation
V
IN
CN8 pin 15
CN11 pin 24
7 V to 12 V 800 mA
From 7 V to 12 V only and input
current capability is linked to input
voltage:
800 mA input current when V
IN
=7 V
450 mA input current when
7 V<V
IN
<9 V
250 mA input current when
9 V<V
IN
<12 V
E5V CN11 pin 6
4.75 V to
5.25 V
500 mA -
+3.3 V
CN8 pin 7
CN11 pin 16
3 V to 3.6 V -
Two possibilities:
ST-LINK PCB is cut
SB3 and SB111 OFF (ST-LINK not
powered)
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