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Diodes makes the AP63205 with a 1.1MHz switching frequency in a similar package. You can use it with ceramic caps. Linky: https://www.digikey.com/en/products/detail/diodes-incorporated/ap63205wu-7/9858424

The benefits of using a faster switching frequency are less ripple (less capacitance needed) and lower value inductor (less I^R losses). Both serve to improve efficiency and footprint. And yes, efficiency is actually improved despite some increased parasitic loss due to the higher switching rate.

Your 5V regulator can use a couple of ceramic 22uF caps and 4.7uH inductor - resulting in a much, much smaller design than you could achieve with a 150kHz switcher.

As far as tantalum caps, besides their physical and electrical issues, there’s another reason to not use them: tantalum is a conflict mineral.

POSCAPs are a good option if you really need a large value in a small volume, which you don’t if you upgrade your switcher.

Finally, if you’re really hurting for space, MPS, TI and others make regulators with integrated inductors.

tl;dr: forget tantalum, update your regulator to a better one.

Diodes makes the AP63205 with a 1.1MHz switching frequency in a smaller (SOT23-6) package. You can use it with ceramic caps. Linky: https://www.digikey.com/en/products/detail/diodes-incorporated/ap63205wu-7/9858424

The benefits of using a faster switching frequency are less ripple (less capacitance needed) and lower value inductor (less I^R losses). Both serve to improve efficiency and footprint. And yes, efficiency is actually improved despite some increased parasitic loss due to the higher switching rate.

Your 5V regulator can use a couple of ceramic 22uF caps and 4.7uH inductor - resulting in a much, much smaller design than you could achieve with a 150kHz switcher.

As far as tantalum caps, besides their physical and electrical issues, there’s another reason to not use them: tantalum is a conflict mineral.

POSCAPs are a good option if you really need a large value in a small volume, which you don’t if you upgrade your switcher.

Finally, if you’re really hurting for space, MPS, TI and others make regulators with integrated inductors.

Diodes makes the AP63205 with a 1.1MHz switching frequency in a similar package. You can use it with ceramic caps. Linky: https://www.digikey.com/en/products/detail/diodes-incorporated/ap63205wu-7/9858424

The benefits of using a faster switching frequency are less ripple (less capacitance needed) and lower value inductor (less I^R losses). Both serve to improve efficiency and footprint. And yes, efficiency is actually improved despite some increased parasitic loss due to the higher switching rate.

Your 5V regulator can use a couple of ceramic 22uF caps and 4.7uH inductor - resulting in a much, much smaller design than you could achieve with a 150kHz switcher.

As far as tantalum caps, besides their physical and electrical issues, there’s another reason to not use them: tantalum is a conflict mineral.

POSCAPs are a good option if you really need a large value in a small volume, which you don’t if you upgrade your switcher.

Diodes makes the AP63205 with a 1.1MHz switching frequency in a similar package. You can use it with ceramic caps. Linky: https://www.digikey.com/en/products/detail/diodes-incorporated/ap63205wu-7/9858424

The benefits of using a faster switching frequency are less ripple (less capacitance needed) and lower value inductor (less I^R losses). Both serve to improve efficiency and footprint. And yes, efficiency is actually improved despite some increased parasitic loss due to the higher switching rate.

Your 5V regulator can use a couple of ceramic 22uF caps and 4.7uH inductor - resulting in a much, much smaller design than you could achieve with a 150kHz switcher.

As far as tantalum caps, besides their physical and electrical issues, there’s another reason to not use them: tantalum is a conflict mineral.

POSCAPs are a good option if you really need a large value in a small volume, which you don’t if you upgrade your switcher.

Finally, if you’re really hurting for space, MPS, TI and others make regulators with integrated inductors.

Diodes makes the AP63205 with a 1.1MHz switching frequency in a similar package. You can use it with ceramic caps. Linky: https://www.digikey.com/en/products/detail/diodes-incorporated/ap63205wu-7/9858424

Besides their physical and electrical issues, there’s another reason to not use tantalum caps: tantalum is a conflict mineral.

Diodes makes the AP63205 with a 1.1MHz switching frequency in a similar package. You can use it with ceramic caps. Linky: https://www.digikey.com/en/products/detail/diodes-incorporated/ap63205wu-7/9858424

The benefits of using a faster switching frequency are less ripple (less capacitance needed) and lower value inductor (less I^R losses). Both serve to improve efficiency and footprint. And yes, efficiency is actually improved despite some increased parasitic loss due to the higher switching rate.

Your 5V regulator can use a couple of ceramic 22uF caps and 4.7uH inductor - resulting in a much, much smaller design than you could achieve with a 150kHz switcher.

As far as tantalum caps, besides their physical and electrical issues, there’s another reason to not use them: tantalum is a conflict mineral.

POSCAPs are a good option if you really need a large value in a small volume, which you don’t if you upgrade your switcher.