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LM3671: Request for Higher Accuracy Alternative to LM3671MFX-3.3/NOPB

Conor
Guru 12235 points
Part Number: LM3671

Tool/software:

Hi,

We are currently using the LM3671MFX-3.3/NOPB in a new design. However, we are now looking for an alternative device with better output voltage accuracy (±2% or better) due to system requirements. Could you please recommend a suitable replacement that meets the following conditions?

  • Fixed 3.3V output

  • Output current: around 600mA

  • Switching frequency: approximately 1MHz

  • Package: Same as LM3671MFX-3.3/NOPB (SOT-23-5) or pin-compatible

  • Note: LDO regulators are also acceptable if they meet the above requirements

Since the PCB has already been fabricated, package and pin compatibility are critical.
Thank you for your support.

Conor

  • 0
    TI__Mastermind 22860 points

    Hello Conor,

    thanks for using E2E.

    We don't have a pin compatible alternative device.

    If you decide for a re-design then the TPS6282533DMQ would be a fixed 3.3V device for up to 2A output current in a 1.5-mm x 1.5-mm QFN package.

    If setting the output voltage with a single resistor would also be an option, then the TPS62808 or TPS628438 would be suitable 0.6A devices.

    Best regards,

    Andreas.