STM32MP153F datasheet(31/38 Pages) ETC

31 / 38 page

OSD32MP15x Datasheet

Rev. 7 11/30/2022

Octavo Systems LLC

7.5.3 PMIC_LDO2

PMIC_LDO2 is produced by LDO2 of the STPMIC1A. The input of LDO2 is brought out to the

PMIC_LDO25IN pin. By default, LDO2 is configured to operate at 1.8V and will not start

automatically. It can be programmed to have a voltage output from 1.7V to 3.3V.

In order to use PMIC_LDO2 or PMIC_LDO5, the PMIC_LDO25IN pin must be connected to a

power output that can supply the required voltage and current for both LDOs.

7.5.4 PMIC_LDO5

PMIC_LDO5 is produced by LDO5 of the STPMIC1A. The input of LDO is brought out to the

PMIC_LDO25IN pin. By default, LDO5 is configured to operate at 2.9V and will start

automatically

10ms after a “Turn_ON” condition. It can be programmed to have a voltage

output from 1.7V to 3.3V

The PMIC_LDO5 output is internally connected to VDDA power input pin of STM32MP15x. This

input powers the Analog domain (ADC/DAC/VREFBUF) of the STM32MP15x processor.

In order to use PMIC_LDO2 or PMIC_LDO5, the PMIC_LDO25IN pin must be connected to a

power output that can supply the required voltage and current for both LDOs.

7.5.5 PMIC_LDO6

PMIC_LDO6 is produced by LDO6 of the STPMIC1A. The input of LDO6 is tied to

PMIC_VOUT4 (Buck4 Output) internal to the OSD32MP15x. By default, LDO6 is configured to

operate at 1.0V and will not start automatically. It can be programmed to have a voltage output

from 0.9V to 3.3V.

Note that PMIC_LDO1 and PMIC_LDO6 are powered by PMIC_VOUT4. The total load on

these LDOs plus any external load on PMIC_VOUT4 must not exceed the capabilities of the

Buck4 regulator outlined in Section 8.

7.5.6 PMIC_BSTOUT

PMIC_BSTOUT is the output of the integrated Boost converter in the STPMIC1A. The input to

the Boost converter is brought out to the PMIC_BSTIN pin. The OSD32MP15x also integrates

an input inductor and capacitor so only a voltage input needs to be provided to use the boost

converter (i.e. PMIC_BSTIN is not directly connected to VLXBST).

The Boost converter has a fixed output voltage of 5.2V and is designed to power USB devices.

It also supports the BYPASS mode as described in the STPMIC datasheet.

STM32MP153F Datasheet(PDF) 31 Page - List of Unclassifed Manufacturers