HT73XXLow Pow er Consumption LDOSelection TablePart No.Ou tpu t VoltagePackageMarkingHT73181.8VTO-92SOT-8973XX-A (for TO-92)73XX-A (for SOT-89)HT73252.5VHT73272.7VHT73303.0VHT73333.3VHT73353.5VHT73505.0VNote:²XX² stands for output voltages.For lead free devices, TO-92 package will add a ²#² mark at the end of the date code, whereas SOT-89package will add a ²#² mark at the end of the marking.Rev. 1.401January12, 2006Featu res·Ultra low quiescent current: 3.5mA (typ.)·High input voltage (up to 12V)·Output voltage:1.8V, 2.5V, 2.7V, 3.0V, 3.3V, 3.5V, 5.0V·Output voltage accuracy: tolerance ±3%·Maximum output current: 250mA·Low dropout voltage·Low temperature coefficient·TO-92, SOT-89 packageApplications·Battery-powered equipment·Voltage regulator for microprocessor·Voltage regulator for LAN cards·Wireless Communication equipment·Audio/Video equipmentGeneral DescriptionThe HT73XX series is a set of three-terminal, low power,high voltage regulators implemented in CMOS technol-ogy. The series features extremely low quiescent cur-rent which is typically 3.5mA . T h e ya l l o wi n p u tv o l t a g e sa sh i g ha s12V. The device provides large current with asignificantly small dropout voltage.The HT73XX consists of a high-precision voltage refer-ence, an error correction circuit, and a current limitedoutput driver. Theyare available with several fixed out-put voltages ranging from 1.8V to 5.0V. CMOS technol-ogy ensures low dropout voltage and low currentconsumption.Althoughdesignedprimarilyas fixed volt-age regulators,thesedevicescan be used with externalcomponentsto generatevariablevoltagesand currents.Block DiagramPin AssignmentAbsolute Maximum RatingsSupplyVoltage ...........................V SS-0.3V to VSS+14VStorage Temperature ................
