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TLV752: Resistor values for Vout = 1.8V and 3.3V

Seong Kim
Mastermind 39580 points
Part Number: TLV752

Hello,

I am planning to use 5V for the TLV752 input.

For Vout_1 to be 3.3V, I am planning to use the following:

  • R1 = 6k ohms
  • R2 = 1k ohms

For Vout_2 to be 1.8V, I am planning to use the following:

  • R1 = 2.48k ohms
  • R2 = 750 ohms

Could you please confirm if these resistors values are okay to use to yield 3.3V and 1.8V at the outputs?

Thanks and best regards,

Seong

  • +1
    TI__Genius 12040 points

    Hello Seong,

                        The voltage at the output pin is set by the equation VOUT = 0.55* (1 + (RFB TOP/RFB BOT)). With RFB TOP = 6KΩ and RFB BOT = 1KΩ , VOUT1 will not equal 3.3V. With RFB TOP = 2.48KΩ and RFB BOT = 750Ω VOUT2 will not equal 1.8V.

                         I recommend the following resistor values for VOUT = 3.3V : RFB TOP = 48.7KΩ and RFB BOT = 9.76KΩ. For VOUT = 1.8V : RFB TOP = 48.7KΩ and RFB BOT = 21.5KΩ. Thanks!

    Regards,

    Srikanth