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TPS7A05: Need higher Vin version with Active Output Discharge

Alfred Logico
Expert 5060 points
Part Number: TPS7A05
Other Parts Discussed in Thread: TLV767

Hi Team,

I received an inquiry from a customer where they need a higher Vin version of our TPS7A05 with the same Active output discharge feature. Below are their requirements:

  1. active output discharge function
  2. Max VIN>=12V,
  3. Fix Vout 3.3V
  4. SOT23-5
  5. I out>=50mA

From checking initially, it seems all our low Vin LDOs are the only ones that have this feature. Customer needs this since for some applications, they will need fast discharge of the output of the LDO. They do have a 10uF cap at the output of the LDO, which causes delays in the output to shut down for their current solution. They want to try a solution with the active output discharge to be able to meet the fast discharge requirement of some of their applications. 

Do let me know if we have a possible solution.

Thanks! 

BR,

Alfred 

  • +1
    TI__Expert 5596 points

    Hello Alfred,

    You are right about not having higher Vin LDO's with active output discharge function in SOT-23 package. We are currently working on TLV767 device in SOT-23 package and should meet your requirements. However, this device is expected to release end of this year and currently we only have them in HVSSOP and WSON packages.

      TPS7A05 TLV767
    AEC Q100 NO NO
    Output Options Fixed Output Adjustable Output, Fixed Output
    Iout (Max) (A) 0.2 1
    Vin (Max) (V) 5.5 16
    Vin (Min) (V) 1.4 2.5
    Vout (Max) (V) 3.3 14.5
    Vout (Min) (V) 0.8 0.8
    Fixed Output Options (V) 0.8, 1, 1.2, 1.5, 1.8, 1.825, 2, 2.2, 2.5, 2.7, 2.8, 2.85, 3, 3.1, 3.3 0.8, 1.8, 2.8, 3.3, 5
    Enable YES YES
    Power Good NO NO
    Output Capacitor Type Ceramic Ceramic
    PSRR @ 100KHz (dB) 15.4 53
    Noise (uVrms) 180 60
    Accuracy (%) 2 1
    Vdo (Typ) (mV) 204 900
    Iq (Typ) (mA) 0.001 0.05
    Thermal Resistance θJA (°C/W) 144.1 60.1
    Min Package Area (mm2) 0.49 4
    Package Type DSBGA, SOT-23, SOT-23, X2SON HVSSOP, WSON

    Regards,

    Prakash L

  • 0 in reply to Prakash Lakhit
    TI__Expert 5060 points

    Hi Prakash,

    Thanks for the feedback! Shared it with customer and  they are now discussing if they will change their layout or wait for the SOT23-5 version of the package. Customer does have some additional questions though. Do you have any details for the capability of this Active discharge function? For example how fast vs the Vout vs Cout, such kind of data?

    Thanks!

    BR,

    Alfred 

  • 0 in reply to Alfred Logico
    TI__Expert 5596 points

    Alfred,

    It is output pulldown current in the TLV767’s EC table.

     There is plot of variation also  (Fig 31 in this datasheet)

     Regards,

    Prakash L