LM3940 Fixed Voltage Regulator Digital Logic Level Systems IC Chips 4.5-5.5v to 3.3v LDO 1A

3-Pin TO-220 Package 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply. a true low dropout #regulator it can hold its 3.3-V output in regulation with input voltages as low as 4.5 V. The LM3940 is ideally suited for systems which contain both 5-V and 3.3-V #logic, with prime power provided from a 5-V bus. The minimum #output capacitance required to maintain stability is 33 µF (this value may be increased without limit). Larger values of output capacitance will give improved transient response.