HT73XX
Low Power Consumption LDO
Features
·
Ultra low quiescent current: 4mA (typ.)
·
High input voltage (up to 12V)
·
Output voltage:
·
Maximum output current: 250mA
·
Low dropout voltage
·
Low temperature coefficient
·
TO-92, SOT-89 package
1.8V, 2.5V, 2.7V, 3.0V, 3.3V, 3.5V, 5.0V
·
Output voltage accuracy: tolerance
±3%
Applications
·
Battery-powered equipment
·
Voltage regulator for microprocessor
·
Voltage regulator for LAN cards
·
Wireless Communication equipment
·
Audio/Video equipment
General Description
The 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 4mA. They allow input voltages as
high as 12V. The device provides large current with a
significantly small dropout voltage.
The HT73XX consists of a high-precision voltage refer-
ence, an error correction circuit, and a current limited
output driver. They are available with several fixed out-
put voltages ranging from 1.8V to 5.0V. CMOS technol-
ogy ensures low dropout voltage and low current
consumption. Although designed primarily as fixed volt-
age regulators, these devices can be used with external
components to generate variable voltages and currents.
Selection Table
Part No.
HT7318
HT7325
HT7327
HT7330
HT7333
HT7335
HT7350
Output Voltage
1.8V
2.5V
2.7V
3.0V
3.3V
3.5V
5.0V
Tolerance
±3%
±3%
±3%
±3%
±3%
±3%
±3%
TO-92-A
TO-92-B
SOT-89-A
73XX-A (for TO-92-A)
73XX-B (for TO-92-B)
73XX-A (for SOT-89)
Package
Marking
Note:
²XX²
stands for output voltages
Rev. 1.10
1
July 30, 2004
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
