Electronic battery charging chip, Battery charger, voltage reference - tatanh1983/conchodom GitHub Wiki LM317 Series 1.2 V 1.5 A Positive Adjustable Voltage Regulator - D2PAK https://www.futureelectronics.com/p/semiconductors--analog--regulators-reference--linear-regulators/lm317d2t-tr-stmicroelectronics-3412715