ST NUCLEO-H745ZI-Q, User Manual

Page: 20 / 45

Hardware layout and configuration UM2408
20/45 UM2408 Rev 1
Figure 9. Power supply input from V
IN
(7-11 V, 800 mA max)
Note: Please see Section 6.4.6 about debugging when using an external power supply.
6.4.3 External power supply input 5V_EXT (5 V, 500 mA max)
When STM32H7 Nucleo-144 board is power supplied by EXT (see Table 6 & Figure 10 ), the
jumper configuration must be the following: Jumper JP2 on pin 5-6 "EXT"
Note: Please see 6.4.6 about debugging when using an external power supply.
Table 5. External power sources: V
IN
(7-11 V)
Input power
name
Connector pins Voltage range Max current Limitation
V
IN
CN8 pin 15
CN11 pin 24
7 V to 11 V 800 mA
From 7 V to 11 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
<11 V
Table 6. External power sources: 5V_EXT
Input power name Connector pins Voltage range Max current
EXT CN11 pin 6
4.75 V to
5.25 V
500 mA