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LP38690-ADJ: P2P Drop in replacement with Lower VO MIN?

Chad Crosby
Prodigy 10 points
Part Number: LP38690-ADJ
Other Parts Discussed in Thread: LP38500-ADJ, , TPS7A8101-Q1, TLV767-Q1, TPS74801-Q1, TPS7A54-Q1, TPS7A52-Q1

Hi,

I'm looking for a regulator with the same pinout as the DFN6 package of this device, but with VO at least able to handle 0.9V. Any recommendations?

Thanks!

Chad

  • 0
    TI__Expert 4736 points

    Chad,

    Unfortunately, we don't have p2p device that can meet your requirements. The closest option is LP38500-ADJ, but it's not p2p and will not meet the Vin max.

      LP38690-ADJ LP38500-ADJ
    AEC Q100 NO NO
    Output Options Adjustable Output Adjustable Output
    Iout (Max) (A) 1 1.5
    Vin (Max) (V) 10 5.5
    Vin (Min) (V) 2.7 2.7
    Vout (Max) (V) 9 5.1
    Vout (Min) (V) 1.25 0.6
    Fixed Output Options (V) - -
    Enable YES NO
    Power Good NO NO
    Output Capacitor Type Ceramic Ceramic
    PSRR @ 100KHz (dB) 45 25
    Noise (uVrms) 80 100
    Accuracy (%) 1.5 2
    Vdo (Typ) (mV) 450 220
    Iq (Typ) (mA) 0.055 2
    Thermal Resistance θJA (°C/W) 51 33
    Min Package Area (mm2) 9 7.5
    Package Type WSON DDPAK/TO-263, TO-263, WSON

    Thanks,

    Prakash L

  • 0 in reply to Prakash Lakhit
    Prodigy 10 points

    Hey Prakash,

    Thanks for getting back so quickly. I was hoping to use the LP3869-ADJ as a drop-in replacement for ST's LD39100, but that Vo min spec prevented that.

    Could you instead just recommend me a replacement to the LD39100? The footprints don't need to match, and this will be for new designs, so it'd be great if you could recommend one with adequate stocking.

    Thanks!

    Chad

  • +1 in reply to Chad Crosby
    TI__Expert 4736 points

    Chad,

    Looks like LD39100 is an Automotive device. Below are some recommendations that can work here. Please let me know if you have any other questions.

      LD39100 TPS7A8101-Q1 TLV767-Q1 TPS74801-Q1 TPS7A54-Q1 TPS7A52-Q1
    AEC Q100 YES YES YES YES YES YES
    Output Options Adjustable Output, Fixed Output Adjustable Output Fixed Output, Adjustable Output Adjustable Output Adjustable Output Adjustable Output
    Iout (Max) (A) 1 1 1 1.5 4 2
    Vin (Max) (V) 5.5 6.5 16 5.5 6.5 6.5
    Vin (Min) (V) 1.5 2.2 2.5 0.8 1.1 1.1
    Vout (Max) (V) 5.1 6 14.6 3.6 5.1 5.2
    Vout (Min) (V) 0.8 0.8 0.8 0.8 0.8 0.8
    Fixed Output Options (V) 1.2, 1.8, 2.5, 3, 3.3, ADJ - 3.3, 5, 8, 9 - - -
    Enable YES YES YES YES YES YES
    Power Good YES NO NO YES YES YES
    Output Capacitor Type Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic
    PSRR @ 100KHz (dB) 45 60 - 28 33 45
    Noise (uVrms) 30 23 60 20 4.4 4.4
    Accuracy (%) 3 3 1 2 1 1
    Vdo (Typ) (mV) 200 250 800 60 150 95
    Iq (Typ) (mA) 0.02 0.06 0.05 1 3 3
    Thermal Resistance θJA (°C/W) 55 46 52 36 40 40
    Min Package Area (mm2) 9 9 9 9 12.25 12.25
    Package Type SON SON SON VQFN, VSON VQFN VQFN, VQFN

    Thanks,

    Prakash L