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TPS65023: PMIC Recommendation

JH Shin
Guru 10390 points
Part Number: TPS65023

Tool/software:

Hello,

My customer is looking for a PMIC that can best support the following conditions:

  - VIN : 5V

  - DC/DC 1CH (0.9V, 1A or higher) & LDO 2 CH (3.3V, 1.8V, 300mA)

Could you please recommend the most compatible TI PMIC?

Thank you.

JH

  • 0
    TI__Genius 14660 points

    Hi,

    What is your end application? does the PMIC has to be functional safety complaint or non-functional safety complaint? If yes, then what ASIL level is needed. 

    You mentioned you need in total 3 channels or rails and is it absolute necessary to have one buck and two LDOs ?  can not those be two bucks one LDO or even all three bucks. 

    Regards,

    Ishtiaque 

  • 0 in reply to Ishtiaque Panhwar
    Prodigy 10 points

    Hello

    I am answering below.

    The final application is a USB MIC, such as the ZOOM IQ5.

    The PMIC to be used requires the following functions:

    Accept 5V from the mobile phone and supply power to the DSP.

    For the DSP currently under review, three rails are needed: DC-DC 0.9V, LDO 3.3V, and LDO 1.8V.
    Support I2C connection to the DSP.

    Optionally, a PMIC with a mode function to reduce power consumption as needed. (This is not a strict requirement.)

    Thank you.

  • 0 in reply to chang gyun Yoo
    TI__Expert 7135 points

    Hi Chang Gyun and JH, 

    I would suggest looking at the TPS650061 PMIC:

    • Accepts 5V VIN
    • LDO1 = 3.3 V, 300 mA
    • LDO2 = 1.8 V, 300 mA
    • DC-DC output voltage is adjustable by using a resistor divider network. Can be configured to 0.9V, 1A
    • Has low-power PFM mode to reduce power consumption at light loads.

    For PMIC that supports I2C connection, LP873244-Q1 may be a better choice:

    • Technical Reference Manual for LP873244-Q1
    • Accepts 5V VIN
    • LDO0 = 1.8 V, 300 mA
    • LDO1 = 3.3 V, 300 mA
    • BUCK0 = 0.9 V, 2 A
    • (BUCK1 not used)

    Let me know if there are any other concerns or questions. 

    Best Regards, 
    Sarah