Suggested boost converter chip for 3.??v to 5v @500mA or so

[pstemari]

My old standby boost converter chip, the LT1308, has skyrocketed in price ($8/ea at DK) and Murata discontinued the recommended inductor.

The chip Sparkfun seems to be using these days, the PAM2401, is backordered everywhere I checked.

Any suggestions for alternatives?  I basically want to boost a lipo up to 5V at ~500mA or so.  I'm fairly constrained on space: a SOT-23 or 8-SSOP would be ideal packages.  I'll be hand soldering this, so the more exotic packages with pads under the chip are not desirable.

[syau]

Many cheap lithium cell boost converter use MT3608.

https://www.olimex.com/Products/Breadboarding/BB-PWR-3608/resources/MT3608.pdf

[mariush]

$0.78 at 100pcs, $1 at 10pcs : PAM2423 seems to be in stock at Digikey, ~60k pcs : https://www.digikey.com/en/products/detail/diodes-incorporated/PAM2423AECADJR/4033258
Though it kinda requires a few components around it to work, using more space on pcb compared to others.

$1.8 at 100pcs : LM2731 (Y=600kHz , X = 1.6 Mhz) seems to be adequate for your needs : https://www.digikey.com/en/products/detail/texas-instruments/LM2731XMF-NOPB/565162

LM2621 may also work but again, requires compensation networks and extra parts and it's more expensive than lm2731.

If a maximum of around 300-400mA works for you, then MIC2250 may be worth checking out, up to 94% efficient and cheap at $0.6 : https://www.digikey.com/en/products/detail/microchip-technology/MIC2250-2YD5-TR/2764088

LMR62014 would also do 500mA and more with 3v or more, but seems to be less efficient than the ones above : https://www.digikey.com/en/products/detail/texas-instruments/LMR62014XMF-NOPB/3179256

[Terry Bites]

TPS61322