the ht71xx series is a set of three-terminal
low power high voltage regulators implemented
in cmos technology. they allow input voltages
as high as 24v. they are available with several
fixed output voltages ranging from 3.0v to
5.0v. cmos technology ensures low voltage
drop and low quiescent current.

selection table
part no. output voltage tolerance
ht7130 3.0v 5%
ht7133 3.3v 5%
ht7136 3.6v 5%
ht7144 4.4v 5%
ht7150 5.0v 5%