LDO configuration on DA9053

[IvoKamalis]

Hi!

We are working on i.mx53 device similar to sabre. I want to ask about power supply. We chose DA9053. How and when the LDO output voltages are being configured. Do we need to program PMIC before or it is being configured from software running on i.mx53 SoC?I tried to find useful information on site but did not get the picture.

Thank you!

[JorgeRama_rezRi · Accepted solution]

Hi Ivo,

The PMIC startup defaults are configured in the factory. When you purchase it, you have to specify these values so Dialog customize the ICs for you.

Best regards.

Jorge.

[IvoKamalis]

Thank you Jorge for your answer!

This sounds reasonable.

OK than one way is to order ic's with right voltages. I read in documentation that there is some way of programming voltage levels by programming OTP on this power chip. Does anyone have tried procedure like this and what equipment/software is needed?

[kishan]

Hi,

you don't need any equipment for that. You need to change appropriate register values to change voltage levels.

You can refer da9053 datasheet for such information.

Regards,

Kishan