• State
  • Replies 2 replies
  • Subscribers 64 subscribers
  • Views 21 views
  • Users 0 members are here
Support feedback
Options
Options
Related

TLV742P: Ordering parts for output above 3.3V

Matthieu Maures
Prodigy 20 points
Part Number: TLV742P
Other Parts Discussed in Thread: TPS7A20, TLV755P

Tool/software:

Hello,

The datasheet for the TLV742P indicates fixed output voltages are available to order from 0.85V to 5V in 50 mV steps.

Further notes in addendum list the different parts available to order, but those are limited from 1.1V to 3.3V with various increments ranging from 100 mV to 300 mV.

These can be ordered from various retailers, which is fine for the 3.3V I'm looking for, but I also need a 4.5V output one.

Is there a way to order a 4.5V output chip ? If so, how ?

Best regards,
Matthieu

  • 0
    TI__Expert 6500 points

    Hello Matthieu,

    The 4.5V output option is not released to market for this device, however there are two other alternative devices which do offer 4.5V output in the same package option and pinout: TPS7A20 and TLV755P

    I also included below a quick spec comparison table between the three devices:

      TPS7A20 TLV755P TLV742P
    Iout(Max)(A) 0.3 0.5 0.2
    Vin(Max)(V) 6 5.5 5.5
    Vin(Min)(V) 1.6 1.45 2
    Vout(Max)(V) 5.5 3.3 5
    Vout(Min)(V) 0.8 0.7 0.85
    Fixed output options(V) 0.9, 1.05, 1.2, 1.5, 1.8, 1.825, 1.85, 2.2, 2.4, 2.5, 2.7, 2.8, 2.85, 2.9, 3, 3.1, 3.2, 3.3, 3.6, 4, 4.2, 4.5, 5, 5.5 0.7, 0.9, 1, 1.1, 1.2, 1.5, 1.8, 1.85, 1.9, 2.5, 2.8, 2.9, 3, 3.3 1.1, 1.2, 1.5, 1.8, 2.5, 2.7, 2.8, 2.9, 3.3
    PSRR @ 100
    KHz(dB)    		 60 49 40
    Noise(uVrms) 7 60 45
    Accuracy(%) 1.5 1.5 1.5
    Dropout voltage
    (Vdo)(Typ)(mV)    		 110 220 250
    Iq(Typ)
    (mA)    		 0.0065 0.025 0.025
    Output capacitor type      Ceramic Ceramic Ceramic
    Operating temperature
    range(C)    		 -40 to 125 -40 to 125 -40 to 125
    Package size: mm2 0.38 mm2: .616 x .616 (DSBGA|4), 8.12 mm2: 2.8 x 2.9 (SOT-23|5), 1 mm2: 1 x 1 (X2SON|4) 8.12 mm2: 2.8 x 2.9 (SOT-23|5), 4 mm2: 2 x 2 (WSON|6), 1 mm2: 1 x 1 (X2SON|4) 1 mm2: 1 x 1 (X2SON|4)
    Rating Catalog Catalog Catalog
    Features Enable, Output discharge Enable, Output discharge Enable, Output discharge

    Regards,

    Andres

  • 0 in reply to Andres Sagredo
    Prodigy 20 points

    Thank you very much, unfortunately, they will not fit my applications. What I'm looking for are LDOs that also feature a very fast start-up time.

    More specifically : I need the slowest LDO to reach 99% of Vout in 161 µs or less after being Enabled.

    The TLV742P seems to be fast enough (98% in 100µs), but unfortunately, the two alternatives you listed do not. A 1x1 mm² package is prefered, but 2x2 mm² will do as well. Dropout voltage should be 300 mV at most, but this should be fine, it looks like most chips fit this criteria.

    I will be looking further into TI's list of components.

    Have a great day,
    Best regards,
    Matthieu