OSYSTEMThe HE2021A50HPBR is a Linear Voltage Regulator (LDO) ROHS manufactured by HEERMICROSYSTEM. It is a very low power on-chip regulator designed to provide a regulated constant voltage from the input. This LDO is packaged in a SOT89B-3 form factor with a maximum input voltage of 6V and a maximum output current of 50mA. It is designed to bring in features such as accurate line and load regulation, low temperature coefficient, and ripple rejection. It is ideal for applications such as telecommunication, industrial control, consumer, and computers. Other features include an output voltage accuracy of 0.5%, thermal shutdown protection, a reverse battery protection circuit, and an enable/ disable control.