HT70XXA-1
TinyPowerTM Voltage Detector
Features
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Low power consumption
Output voltage accuracy: tolerance ± 3%
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Low temperature coefficient
Built-in hysteresis characteristic
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High input voltage range (up to 24V)
TO-92, SOT-89 and SOT-25 package
Applications
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Battery checkers
Microcomputer reset
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Level selectors
Battery memory backup
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Power failure detectors
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
Detectable
Voltage
Hysteresis
Width
Part No.
Tolerance
Package
Marking
HT7022A-1
HT7024A-1
HT7027A-1
HT7033A-1
HT7039A-1
HT7044A-1
HT7050A-1
2.2V
2.4V
2.7V
3.3V
3.9V
4.4V
5.0V
0.11V
0.12V
±3%
±3%
±3%
±3%
±3%
±3%
±3%
0.135V
0.165V
0.195V
0.22V
TO-92
70XXA-1 (for TO-92)
70XXA-1 (for SOT-89)
0XXA (for SOT-25)
SOT-89
SOT-25
0.25V
Note:
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