PMIC MMPF0100 Vin Vs Vout

[mrudangshelat]

Hi, I am making design based on i.MX6D and I have used PMIC as MMPF0100A. As per datasheet of MMPF0100A, it shows Vin range between 2.8V to 4.5V for 14 Output (Switchers and LDOs). What will be the output voltage of all Switcher and LDOs, if the Vin is below 2.8V? What will be the output voltage of all Switcher and LDOs, if the Vin is below 3.0V? Regards, Mrudang

[igorpadykov · Accepted solution]

Hi Mrudang

when Vin is below 2.8V output voltage will follow input provided conditions

mentioned in MMPF0100 Datasheet Table 63. SW2 Electrical Characteristics :

Footnote 46. "When output is set to > 2.6 V the output will follow the input down when VIN gets near 2.8 V."

and Table 104. VGEN3 Electrical Characteristics

Footnote 63. "When the LDO Output voltage is set above 2.6 V, the minimum

allowed input voltage needs to be at least the output voltage plus 0.25 V, for proper

regulation due to the dropout voltage generated through the internal LDO transistor."

http://cache.freescale.com/files/analog/doc/data_sheet/MMPF0100.pdf

That is for normal operation switcher should has 0.2V and LDO 0.25V difference

between input and output voltages

Best regards

igor

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[mrudangshelat]

Hi Igor,

What will be the output voltage of all Switchers and all LDOs, if the Vin =2.8V,  3.0V  and 3.3V?

Regards,

Mrudang

[mrudangshelat]

Hi Igor,

Thanks for your reply.

As you said "That is for normal operation switcher should has 0.2V and LDO 0.25V difference between input and output voltages".

Does it applicable for all 6 Switcher and 6 LDO Output of PMIC?

Regards,

Mrudang

[igorpadykov]

Hi Mrudang

yes for all

Best regards

igor