MAX20003
MAX20003 2A/3A Fully Integrated Step-Down Converter by Maxim Integrated (TQFN 20 Pin Type ( 5mm x 5mm )): datasheet PDF, pinout and specifications.
Maxim Integrated was a San Jose analog semiconductor company known for interface ICs like the MAX232, power management, sensors and 1-Wire devices such as the DS18B20 (from its Dallas Semiconductor acquisition). It was acquired by Analog Devices in 2021.

MAX20003 2A/3A Fully Integrated Step-Down Converter by Maxim Integrated (TQFN 20 Pin Type ( 5mm x 5mm )): datasheet PDF, pinout and specifications.
MAX125 2×4-Channel / Simultaneous-Sampling 14-Bit DAS by Maxim Integrated (SSOP 36 Pin Type): datasheet PDF, pinout and specifications.
MAX250 +5V Powered Isolated RS-232 Drivers/Receivers by Maxim Integrated (DIP, SO 14 Pin Type): datasheet PDF, pinout and specifications.
MAX6675 MODULE + K TYPE Thermocouple Sensor by Maxim Integrated: datasheet PDF, pinout and specifications.
MAX7219 8x8 Dot LED Matrix MCU Control Display Module by Maxim Integrated (DIP): datasheet PDF, pinout and specifications.
RS485 TTL To RS-485 MAX485CSA Converter Transceiver Module by Maxim Integrated (DIP, SOT-23): datasheet PDF, pinout and specifications.
MAX3232 Serial Port Mini RS232 To TTL Converter Adaptor Module Board by Maxim Integrated (DIP, TSSOP, SSOP): datasheet PDF, pinout and specifications.
MAX30102 SPO2 Blood Oxygen Concentration Sensor by Maxim Integrated: datasheet PDF, pinout and specifications.