Figure 11.
Power diagram
USB
Type-C
®
USB
STLINK
3
2
p
i
n
E
X
T
3
2
p
i
n
E
X
T
LTC3114
5V Converter
BUCKBOOST
STMPS2151
USBPD_VBUS
=> 5V to 15 V
nominal voltage
=> up to 3 A
5V_USBPD
5V_USB_CHGR
5V nominal voltage
=> up to 1.5 A
5V_USB_CHGR
5V_USB_STLK
5V_VIN
5V_USBPD
5V_VIN
5V nominal voltage
=> up to 1.5 A
BUCKS
+ RGB
POWER
LED
5V_OUT
LD39050
STM32G4
VDD
3V3_OUT
VREF
power
LD3985
3V3_OUT
5V_OUT
VBAT
VDD
VDDA
VREF+
5V_SEL
STLINK /
V3E
3V3_STLK
POWER
DIAGRAM
=> Up to 150 mA
Up to 1.5 A
=> Up to 10 mA
=> Up to 500 mA
=> Up to 500 mA
100 mA
380 mA / 520 mA / 810 mA / 950 mA
Up to 500 mA
Double
switch
VOUT
embedded
resistor
LOADs
3V3
5V
T_NRST
Up to 1.5 A
370 mA
10 mA
Up to 1.5 A
VIN
VOUT
V_LED
R133
SB18 OFF
Up to 950 mA
Up to 0.5 A
Up to 1.5 A
SB38 ON
SB30 ON
Speaker
Option
USER LEDs /
JOYSTICK
30 mA
TEXT
Connector
=> 3V to 16 V
Up to 500 mA
(externally)
Power voltage
and/or current
consumption
SB31 ON
150 mA
CN2
CN3
CN9
CN8
For detailed BUCK-BOOST limits,
refer to dedicated application note
CNx
JP1
CN7
JP2/JP3
JP5
JP4
JP7
=> Up to 250 mA
UM2577
-
Rev 2
page 19/54
UM2577
