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PAM2841GR Diodes Incorporated | Integrated Circuits (ICs) | DigiKey (boost → $1.20)
https://www.digikey.ca/en/products/detail/diodes-incorporated/AL8843QSP-13/10668306 (probably using this one)
General op-amp
OPA 2197 OPA2197QDGKRQ1 Texas Instruments | Integrated Circuits (ICs) | DigiKey (old, out of stock)
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