BUY LT1081 https://www.utsource.net/itm/p/799061.html
Advanced Low-Power 5-V Dual EIA-232 Driver/Receiver
Package: SOP-8 Manufacturer: Linear Technology Description: The LT1081 is a high performance, low power, low dropout, three-terminal adjustable regulator. Features: - Output voltage adjustable from 1.2V to 37V - Output current up to 1.5A - Dropout voltage of 0.5V at 1A - Low quiescent current of 1mA - Thermal shutdown and current limiting - Internal frequency compensation Applications: - Battery-powered systems - Automotive systems - Industrial systems - Portable devices - Telecommunications systems (For reference only)