HT70xxA-3
TinyPowerTM Voltage Detector
Features
General Description
•ꢀ Lowꢀpowerꢀconsumption
TheꢀHT70xxA-3ꢀseriesꢀdevicesꢀareaꢀsetꢀofꢀthreeꢀ
terminalꢀlowꢀpowerꢀvoltageꢀdetectorsꢀimplementedꢀinꢀ
CMOSꢀtechnology.ꢀEachꢀvoltageꢀdetectorꢀinꢀtheꢀseriesꢀ
detectsꢀaꢀparticularꢀfixedꢀvoltageꢀrangingꢀfromꢀ2.2Vꢀtoꢀ
8.2V.ꢀTheꢀvoltageꢀdetectorsꢀconsistꢀofꢀaꢀhigh-precisionꢀ
andꢀlowꢀpowerꢀconsumptionꢀstandardꢀvoltageꢀsourceꢀ
asꢀwellꢀasꢀaꢀcomparator,ꢀhysteresisꢀcircuit,ꢀandꢀanꢀ
outputꢀdriver.ꢀCMOSꢀtechnologyꢀensuresꢀlowꢀpowerꢀ
consumption.
•ꢀ Lowꢀtemperatureꢀcoefficient
•ꢀ Highꢀinputꢀvoltageꢀrangeꢀ(upꢀtoꢀ30V)
•ꢀ Quiescentꢀcurrentꢀ1μA
•ꢀ Outputꢀvoltageꢀaccuracy:ꢀtoleranceꢀ±2%
•ꢀ Built-inꢀhysteresisꢀcharacteristic
•ꢀ TO92,ꢀSOT89ꢀandꢀSOT23-5ꢀpackage
Althoughꢀ designedꢀ primarilyꢀ asꢀ fixedꢀ voltageꢀ
detectors,ꢀtheseꢀdevicesꢀcanꢀbeꢀusedꢀwithꢀexternalꢀ
componentsꢀtoꢀdetectꢀuserꢀspecifiedꢀthresholdꢀvoltages.
Applications
•ꢀ Batteryꢀcheckers
•ꢀ Levelꢀselectors
•ꢀ Powerꢀfailureꢀdetectors
•ꢀ Microcomputerꢀreset
•ꢀ Batteryꢀmemoryꢀbackup
•ꢀ Non-volatileꢀRAMꢀsignalꢀstorageꢀprotectors
Selection Table
Detectable Hysteresis
Part No.
Tolerance
Package
Marking
Voltage
2.2V
2.4V
2.7V
3.3V
3.9V
4.4V
5.0V
8.2V
Width
0.110V
0.120V
0.135V
0.165V
0.195V
0.220V
0.250V
0.410V
HT7022A-3
HT7024A-3
HT7027A-3
HT7033A-3
HT7039A-3
HT7044A-3
HT7050A-3
HT7082A-3
TO92
SOT89
SOT23-5
70xxA-3 (for TO92)
70xxA-3 (for SOT89)
xxA3 (for SOT23-5)
±2%
Note:ꢀ″xx″ꢀstandsꢀforꢀoutputꢀvoltages.
Rev. 1.00
1
April 18, 2013