LM4431M3X-2.5 ,Micropower Shunt Voltage ReferenceGeneral Descriptionn Fixed reverse breakdown voltage of 2.50VIdeal for space critical
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LM4431M3-2.5-LM4431M3X-2.5
Micropower Shunt Voltage Reference
LM4431
Micropower Shunt Voltage Reference
General DescriptionIdealfor space critical applications,the LM4431 voltageref-
erenceis availableinthe sub-miniature(3mmx1.3 mm)
SOT-23 surface-mount package. The LM4431’s advanced
design eliminatesthe needfor anexternal stabilizing capaci-
tor while ensuring stability with any capacitive load, thus
makingthe LM4431 easyto use. The operating current
rangeis100μAto15 mA.
The LM4431 utilizes fuseand zener-zap reverse breakdown
voltagetrim during wafersortto ensurethatthe parts have accuracyof better than ±2.0%at 25˚C. Bandgap refer-
encetemperaturedrift curvature correctionandlow dynamic
impedance ensure stable reverse breakdown voltage accu-
racy overa wide rangeof operating temperatures andcur-
rents.
Features Small package: SOT-23No output capacitor required Tolerates capacitive loads Fixed reverse breakdown voltageof 2.50V
Key Specifications Output voltage tolerance 25˚C: ±2.0% (max) Low output noise(10Hzto10 kHz):35 μVrms (typ) Wide operating current range:100μAto15mA Commercial temperature range:0˚Cto +70˚C Low temperature coefficient:30 ppm/˚C (typ)
Applications Portable, Battery-Powered Equipment Data Acquisition Systems Instrumentation Process Control Energy Management Product Testing Power Supplies
Connection Diagram
SOT-23 Package Marking InformationOnly three fieldsof markingare possibleonthe SOT-23’s small surface.The following table givesthe meaningofthe three
fields.
Part Marking Field DefinitionS2E First Field:= Reference
Second Field:= 2.500V Voltage Option
Third Field:= Initial Reverse Breakdown Voltage Toleranceof ±2.0%
SOT-23DS011374-1
*Thispinmustbe leftfloatingor connectedtopin2.
Top View
Order Number LM4431M3-2.5
SeeNS Package Number M03B
(JEDEC Registration TO-236AB)July 1998
LM4431
Micropower
Shunt
oltage
Reference©1998NationalSemiconductor Corporation DS011374
