NXP Semiconductors
UM12036
MCX-N9XX-EVK Board User Manual
The P5V0 supply is an input power supply for the onboard PCA9420 PMIC (U2) and ADM172 3.3 V regulator
(U54), which provides secondary power supplies. The P5V0 supply also powers up the energy monitoring
analog circuits, FS / HS USB VBUS controllers, and CAN driver.
Many power supplies in the MCX-N9XX-EVK board are connected through jumpers, which can be used to
configure their respective power supplies. This configuration includes enabling/disabling a power supply and
changing the input power source for a power supply.
5 V power sources and selection
The following table describes the 5 V input power sources and their output power supplies.
Part identifier Device / power source Output power supply Description
J5 MCU-Link USB micro-B
connector
P5V_MCU_LINK_USB • One of the sources of P5V0 (5 V) supply
(default option)
• USB regulator input power supply for MCU-
Link microcontroller LPC55S69
J28 FS USB connector VREG_IN_USB0 One of the sources for P5V0 (5 V) supply
J27 HS USB connector VREG_IN_USB1 One of the sources for P5V0 (5 V) supply
J23 5 V power regulator
populated at J23
P5V_HDR_IN One of the sources for P5V0 (5 V) supply
J3 (pin 10) Arduino shield
compatible header
P5V0 • Power supply for:
– Onboard PCA9420 PMIC (U2)
– ADM172 3.3 V regulator (U54)
– mikroBUS connector (J22)
– HS and FS USB connectors power
switches (U24 and U26)
– FlexCAN transceiver TJA1057 (U39)
• Power source for:
– P5VA analog power supply
Table 6. 5 V power sources
A 10-pin jumper (J26) is provided on the board to make the 5 V power source selection. By default, the jumper
is set to select a 5 V supply from the MCU-Link USB micro-B connector (J5). For the J26 jumper details, see
Section 1.6. The D7 LED indicates that the 5 V power is available on the board. For the D7 LED details, see
Section 1.8.
Section 2.1 shows the 5 V power selection on the MCX-N9XX-EVK board.
UM12036 All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved.
User manual Rev. 1 — 20 January 2024
14 / 51
To Next Page
Loading...
