HT70XXA-1
TinyPower
TM
Voltage Detector
Features
·
Low power consumption
·
Low temperature coefficient
·
High input voltage range (up to 24V)
·
Output voltage accuracy: tolerance
±
3%
·
Built-in hysteresis characteristic
·
TO-92, SOT-89 and SOT-25 package
Applications
·
Battery checkers
·
Level selectors
·
Power failure detectors
·
Microcomputer reset
·
Battery memory backup
·
Non-volatile RAM signal storage protectors
General Description
The HT70XXA-1 series devices area set of three terminal
low power voltage detectors implemented in CMOS
technology. Each voltage detector in the series detects a
particular fixed voltage ranging from 2.2V to 5V. The
voltage detectors consist of a high-precision and low
power consumption standard voltage source as well as a
comparator, hysteresis circuit, and an output driver.
CMOS technology ensures low power consumption.
Although designed primarily as fixed voltage detectors,
these devices can be used with external components to
detect user specified threshold voltages.
Selection Table
Part No.
HT7022A-1
HT7024A-1
HT7027A-1
HT7033A-1
HT7039A-1
HT7044A-1
HT7050A-1
Note:
Detectable
Voltage
2.2V
2.4V
2.7V
3.3V
3.9V
4.4V
5.0V
Hysteresis
Width
0.11V
0.12V
0.135V
0.165V
0.195V
0.22V
0.25V
Tolerance
±3%
±3%
±3%
±3%
±3%
±3%
±3%
TO-92
SOT-89
SOT-25
70XXA-1 (for TO-92)
70XXA-1 (for SOT-89)
0XXA (for SOT-25)
Package
Marking
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-89 &
SOT-25 packages will add a
²#²
mark at the end of the marking.
Rev. 1.40
1
January 26, 2006
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
