Figure 11. Power Diagram - STMicroelectronics B-G474E-DPOW1 Manual

CN2
USB
Type-C
®
USBPD_VBUS
=> 5V to 15 V
nominal voltage
=> up to 3 A
CN9
Up to 1.5 A
LTC3114
5V Converter
Up to 1.5 A
Double
switch
380 mA / 520 mA / 810 mA / 950 mA
VIN JP1
JP2/JP3
Speaker
BUCKBOOST
Option
VOUT
embedded
For detailed BUCK-BOOST limits,
resistor
refer to dedicated application note
LOADs
Figure 11. Power diagram
POWER
DIAGRAM
5V_OUT 3V3_OUT
CN3
3 3
USB
2 2
STLINK
p p
i i
n n 5V_USB_CHGR
5V nominal voltage
=> up to 1.5 A
E E
X X
T T
CN8
5V_VIN
Up to 500 mA
5V nominal voltage
Up to 0.5 A
=> up to 1.5 A
STMPS2151
Up to 1.5 A
5V_USBPD Up to 950 mA
Up to 1.5 A
VOUT
CN7
CNx
TEXT
=> 3V to 16 V
Up to 500 mA
(externally)
=> Up to 500 mA
=> Up to 250 mA
=> Up to 500 mA
LD39050
5V_SEL
5V_USB_STLK
=> Up to 10 mA
5V_VIN
5V VREF
power
5V_USBPD
5V_USB_CHGR
JP5
=> Up to 150 mA
SB31 ON
Connector
Power voltage
and/or current
consumption
SB38 ON
5V_OUT
BUCKS
+ RGB
R133
V_LED
POWER
LED
30 mA
USER LEDs /
JOYSTICK
SB30 ON
100 mA
3V3_OUT
VBAT
3V3 VDD
VDD
370 mA
STM32G4
VDDA
JP4
VREF+
10 mA
SB18 OFF
T_NRST
JP7
STLINK /
3V3_STLK
LD3985
V3E
150 mA