identify the component of LNK2 and 0R_0603_ULO

[Rayan]

hi,
I'm currently designing a custom board using the STM32MP157F MPU, and I'm referencing the schematic of the STM32MP157F-DK2 evaluation board. I'm stuck on identifying a specific component with a 0603 footprint. Is it a 0-ohm resistor? Additionally, what does 'ULO' mean at the end of the footprint? Lastly, what is the component labeled LNK2?

 

[PatrickF]

Hi, @Rayan 

LNKx is not a real component, it is a trick to force feedback voltage connection to STPMIC in a star manner (i.e. no currnet must flow in this branch). There is probably different ways to ensure that, depending on your PCB tool.

 

For the resistor, you will get the part number in the associated board BOM file or by clicking on the component.

Here it is ROHM PMR03EZPJ00 https://www.rohm.com/products/resistors/high-reliability-resistors/ultra-low-ohmic-chip-jumper/pmr03ezpj000-product

it is simply a 0 ohms jumper (ULO stand for Ultra Low Ohmic) which could be replaced by a small value resistor shunt to allows current measurement.

On a final product, this could be omitted.

Regards.