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TPS7A47-Q1: Linear Regulator

Part Number: TPS7A47-Q1
Other Parts Discussed in Thread: TPS7A47, TPS7A33, LM337-N


I need a negative voltage regulator with input voltage -35V output current 1A with the same noise parameters such as the TPS7A47  Voltage Noise: 4.2 μV RMS (10 Hz–100 kHz). Do you have?

Best regards,


  • Hi Sergey,

    Unfortunately we do not have any automotive qualified negative regulators that can meet your input voltage and current requirements.  Our closest fit to your application is TPS7A33 which has a typical noise of 16 uVrms.  TPS7A33 is commonly used in applications with TPS7A47 when a negative and positive LDO are required.

    Our parametric search is a useful tool for quickly identifying the best LDOs for a given application.  I have filled in the parametric search with your input voltage and output current requirements.  These two requirements narrowed our portfolio to 7 parts.  You can find the results here.  If you look at the noise column, you can see that the lowest noise devices remaining are TPS7A33 at 16 uVrms and LM337-N at 38 uVrms.

    Very Respectfully,