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LDO with dual output

Ranjith Kumar Mani
Prodigy 20 points

Hi, we are using two LDO's TPS73701DCQR and TLV70033DDCR for 4V and 3.3V conversion, already we are using boost IC from TI as well for 4V to 4.4V conversion. we are looking for a solution where we can have a single IC as LDO with both 4V and 3.3V as output with the same cost. Kindly let me know if anything is available in this category. 

  • 0
    TI__Expert 6410 points

    Hi Ranjith,

    What are the load currents in each rail? This will help offer you the correct dual LDO.

    Regards,

    Andres

  • 0 in reply to Andres Sagredo
    Prodigy 20 points

    1A on 4V and 3.3V has 200mA. 

  • +1 in reply to Ranjith Kumar Mani
    TI__Expert 6410 points

    Hi Ranjith,

    Thank you for providing that information. We have TLV75201PDSQR as an adjustable dual LDO which each rail can handle up to 1A , and each rail is independently set. This dual LDO is adjustable with high PSRR and comes in a small package:

      TLV75201PDSQR TPS73701DCQR TLV70033DDCR
    Iout(Max)(A) 1 1 0.2
    Vin(Max)(V) 6 5.5 5.5
    Vin(Min)(V) 1.5 2.2 2
    Vout(Max)(V) 5.5 5.4 3.6
    Vout(Min)(V) 0.55 1.2 1.2
    Fixed output options(V) ADJ ADJ 3.3
    PSRR @ 100
    KHz(dB)    		 45 33 51
    Noise(uVrms) 53 48 48
    Accuracy(%) 1.5 3 2.5
    Dropout voltage
    (Vdo)(Typ)(mV)    		 225 130 175
    Iq(Typ)
    (mA)    		 0.025 0.4 0.03
    Output capacitor type      Ceramic Ceramic Ceramic
    Thermal resistance
    θJA(°C/W)    		 74.6 50 236
    Operating temperature
    range(C)    		 -40 to 125 -40 to 125 -40 to 125, -40 to 85
    Package size: mm2 4 mm2: 2 x 2 (WSON|10) 9 mm2: 3 x 3 (SON|8) 8 mm2: 2.8 x 2.9 (SOT-23-THIN|5)

    Regards,

    Andres