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TPS56528: Externally loading VREG5

ArdWar
Prodigy 230 points
Part Number: TPS56528
Other Parts Discussed in Thread: TPS7A53,

I just noticed that unlike most other parts with internal aux regulator, there's no explicit prohibition not to load the VREG5. There's even IO_VREG5 specified. Is it allowed to load it? For example to bias TPS7A53 (a <3.5mA load)

  • 0
    TI__Genius 9280 points

    Hi Ardwar,

    VREG5 is the internal LDO output , as the internal power supply 5.5V. So it has the loading capbility. You can find the spec of this VREG in EC table as below.

    Pls note larger loading may make the VREG drop and if lower than UVLO threshold voltage, the TPS56528 will shut off.

    BRs,

    YZ