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LP2985-N:

IOANNIS KALTSIDIS
Prodigy 20 points
Part Number: LP2985-N
Other Parts Discussed in Thread: LP2985, , LP2985A, TPS7A49, TLV767, TPS7A24, TPS709

Hello TI Team,

I would like to know the difference between parts LP2985AIM5-2.7/NOPB and LP2985IM5-2.7/NOPB.

In addition since these parts are obsolete or end of life, do you have a new design Active and what's the part number? I found some new parts belonging to the LP2985 family i.e. LP2985-28DBVR but i can't find one with 2.7V of output voltage and the characteristics differ from the LP2985-N series.

Thanks for your help,

Stelios

  • 0
    TI__Expert 4791 points

    Hey Stelios, 

    Thank you for your question! The LP2985AIM5-2.7/NOPB (LP2985A) has a tighter accuracy spec of 3% in comparison to the LP2985IM5-2.7/NOPB (LP2985-nonA) with an accuracy of 5%. The TPS70927DBVR is a great alternative, it is a fixed voltage option and is p2p compatible. There are also quite of few adjustable devices with similar specs, I would recommend looking at the TPS7A24 if more similar performance. If you need better noise performance, I recommend the TLV767 and the TPS7A49. 

      LP2985A LP2985 TPS709 TPS7A24 TLV767 TPS7A49
    AEC Q100 NO NO NO NO NO NO
    Output Options Fixed Output Fixed Output Fixed Output Adjustable Output, Fixed Output Adjustable Output, Fixed Output Adjustable Output
    Iout (Max) (A) 0.15 0.15 0.15 0.2 1 0.15
    Vin (Max) (V) 16 16 30 18 16 36
    Vin (Min) (V) 2.2 2.2 2.7 2.4 2.5 3
    Vout (Max) (V) 10 10 6 17.75 14.5 33
    Vout (Min) (V) 1.8 1.8 1.2 1.24 0.8 1.2
    Fixed Output Options (V) 1.8, 2.5, 2.8, 2.9, 3, 3.3, 5, 10 1.8, 2.5, 2.8, 2.9, 3, 3.3, 5, 10 1.2, 1.35, 1.5, 1.6, 1.8, 1.9, 2.5, 2.7, 2.8, 3, 3.3, 3.6, 3.8, 3.9, 5, 6 1.25, 1.8, 2.5, 3, 3.3, 3.6, 5 0.8, 1.8, 2.5, 2.8, 3.3, 5, 8 -
    Enable NO YES YES YES YES YES
    Power Good NO NO NO NO NO NO
    Output Capacitor Type Ceramic, Non-Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic
    PSRR @ 100KHz (dB) 40 40 26 22 53 54
    Noise (uVrms) 30 30 190 300 60 15
    Accuracy (%) 3 5 2 2 1 2.5
    Vdo (Typ) (mV) 280 280 300 160 900 260
    Iq (Typ) (mA) 0.065 0.065 0.001 0.002 0.05 0.06
    Thermal Resistance θJA (°C/W) 206 206 73 167.8 60.1 48
    Min Package Area (mm2) 4.64 4.64 4 4.64 4 9
    Package Type SOT-23 SOT-23 SOT-23, WSON SOT-23 HVSSOP, SOT-23, WSON HVSSOP, SON

    Thanks, 

    McKyla