ST NUCLEO-L433RC-P User Manual

Hardware layout and configuration UM2206
18/55 UM2206 Rev 3
9.5 Power supply and power selection
9.5.1 External Power supply input
The STM32 Nucleo-64-P board is designed to be powered by several DC power supply. It is
possible to supply the STM32 Nucleo-64-P board with any of the following sources:
• 5V_ST_LINK from ST-LINK USB connector
• V
IN
(7 V-12 V) from Arduino connector or ST morpho connector
• E5V from ST morpho connector
• 5V_USB_CHARGER from ST-LINK USB
• 3.3 V on Arduino connector or ST morpho connector
Note: If an external 5V DC power source is used, the Discovery board must be powered by a
power supply unit or by an auxiliary equipment complying with the standard EN-60950-1:
2006+A11/2009 and must be Safety Extra Low Voltage (SELV) with limited power capability.
The power supply capabilities are showed in Table 7.
5V_ST_LINK is a DC power with limitation from ST-LINK USB connector (USB type Micro-B
connector of ST-LINK/V2-1). In this case JP5 jumper should be on pins 1 and 2 to select
5V_STL power source on silkscreen of JP5. This is the default setting. If the USB
enumeration succeeds, the 5V_ST_LINK power is enabled, by asserting the PWR_ENn
signal (from STM32F103CBT6). This pin is connected to a power switch ST890, which
Table 7. Power supply capabilities
Input power
name
Connector
pins
Voltage
range
Max
current
Limitation
V
BUS
(5V_STLINK)
CN1 pin 1
4.75 V to
5.25 V
500 mA
Max current depends on the USB
enumeration:
– 100 mA without enumeration
– 500 mA with enumeration OK
V
IN
CN8 pin 8
CN5 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
– 300 mA input current when
10 V>V
IN
>9 V
– less than 300 mA input current when
V
IN
>10 V
E5V CN5 pin 6
4.75 V to
5.25 V
500 mA
5V_USB_CHG CN1 pin 1
4.75 V to
5.25 V
500 mA
Max current depends on the USB wall
charger used to powered the Nucleo
board
3.3V
CN8 pin 4
CN5 pin 16
JP6 pin 2
3 V to 3.6 V -
Used when ST-LINK part of PCB not
used or removed and SB13 OFF

ST NUCLEO-L433RC-P Specifications

General

Brand	ST
Model	NUCLEO-L433RC-P
Category	Motherboard
Language	English