Texas Instruments LP3470A Bruksanvisning
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V
CC
(V)
I
CC
(µA)
12345678910
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0.55
0.6
Iq_v
25°C
-40°C
125°C
LP3470A
VCC
GND
RESET
Microcontroller
VCC
RESET
LDOIN OUT
SRT
VCC1
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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
LP3470A
SNVSBF5C–JULY2019–REVISEDMAY2020
LP3470AUltraLowPowerVoltageSupervisorWithProgrammableDelayand1%Reset
Threshold
1
1Features
1
•Pin-to-pincompatiblewithLP3470
•5-PinSOT-23package
•Open-drainRESEToutput
•Programmableresettime-outperiodusingan
externalcapacitor
•ImmunetoshortVCCtransients
•±1%Resetthresholdaccuracy(typical)
•Ultra-lowquiescentcurrent(0.3µAtypical)
•RESETvaliddowntoVCC=0.95V
2Applications
•CriticalµPandµCpowermonitoring
•Intelligentinstruments
•Computers
•Portableandbattery-poweredequipment
•Buildingautomation:buildingsecuritysystem,
videosurveillance
•Factoryautomation:fieldtransmitters,position
andproximitysensors
•Motordrives
3Description
TheLP3470Adeviceisamicropowervoltage
supervisorycircuitdesignedtomonitorvoltages
within1%ofresetthresholdovertemperatureandis
pin-to-pincompatiblewithexistingTIdeviceLP3470.
TheLP3470Adeviceprovidesaccurate,nano-power
voltagemonitoringwithprogrammabledelay.
TheLP3470Aassertsaresetsignalwheneverthe
VCCsupplyvoltagefallsbelowaresetthreshold.The
resettime-outperiodisadjustableusinganexternal
capacitor.Resetremainsassertedforaninterval
(programmedbyanexternalcapacitor)afterVCChas
risenabovethethresholdvoltageplushysteresis.
Forinformationonavailableresetthresholdvoltage
options,seeMechanical,Packaging,andOrderable
Information.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
LP3470ASOT-23(5)1.60mm×2.90mm
(1)Forallavailablepackages,seethePackageOption
Addendumattheendofthedatasheet.
BasicOperatingCircuitTypicalSupplyCurrentforLP3470A
Produktspecifikationer
| Varumärke: | Texas Instruments |
| Kategori: | ej kategoriserat |
| Modell: | LP3470A |
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