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TLV733P: Better PSRR LDO

Ian Wang
Mastermind 29750 points
Part Number: TLV733P
Other Parts Discussed in Thread: TLV702-Q1, LP5907-Q1, LP5912-Q1

Dear Sir,

May customer using TLV73333P-Q1 and  TLV73318P-Q1 but looking for better PSRR LDO with same spec..

Do you have suggest what we can promote?

Thanks, Ian.

  • 0
    TI__Guru 55940 points
    Hi Ian,

    For higher PSRR please consider TLV702-Q1; however, it is important to note that these devices are not pin to pin compatible.

    For part suggestions, keep in mind that the more information you can give us about how you are planning to use the LDO or requirements you have for the LDO, the better our suggestions can be. If TLV702-Q1 will not fit your application, please help us better understand your application requirements such as pinout, Vin, Iout, accuracy, etc.

    Very Respectfully,
    Ryan
  • 0 in reply to Ryan Eslinger
    TI__Mastermind 29750 points
    Dear Ryan,
    Thanks, customer looking for 2 LDOs,
    1. 5V-3.3V
    2. 5V-1.8V
    Need to have Q-grade and High PSRR, > 65dB(min)@1KHz~3KHz ; >55 dB(min)@3KHz~30KHz
    Thanks, Ian.
  • 0 in reply to Ian Wang
    TI__Mastermind 29750 points
    Dear Ryan,
    Pls have your comments for these 2 LDOs, thanks.
    Thanks, Ian.
  • 0 in reply to Ian Wang
    TI__Guru 55940 points
    Hi Ian,

    Please consider LP5907-Q1 or LP5912-Q1. Both of these LDOs were originally released by the former National Semiconductor team so the ratio used to generate the PSRR curves is inverted from how TI normally shows PSRR. The result is that the PSRR curves show negative numbers rather than positive numbers so keep this in mind when reviewing the devices.

    Very Respectfully,
    Ryan