UC29431D ,Precision Adjustable Shunt RegulatorMAXIMUM RATINGSSupply Voltage: V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36VDIL-8 ..
UC29431D ,Precision Adjustable Shunt RegulatorFEATURES DESCRIPTION• Multiple On-Chip Programmable The UC39431 is an adjustable shunt voltage regu ..
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UC29431D
Precision Adjustable Shunt Regulator
UC19431
UC29431
UC39431
UC39431B
DESCRIPTIONThe UC39431isan adjustable shunt voltage regulator with 100mA sink ca-
pability. The architecture, comprised of an error amplifier and
transconductance amplifier, gives the user separate controlof the small
signal error voltage frequency response along witha fixed linear
transconductance.A minimum 3MHz gain bandwidth product for both the
error and transconductance amplifiers assures fast response.In additionto
external programming, theIC has three internal resistors that can be con-
nectedin six different configurationsto provide regulated voltagesof 2.82V,
3.12V, 5.1V, 7.8V, 10.42V, and 12.24V.A sister device (UC39432) provides
accessto the non-inverting error ampilifer input and reference, while elimi-
nating the three internal resistors.
Precision Adjustable Shunt Regulator
FEATURES Multiple On-Chip Programmable
Reference Voltages 0.4% Initial Accuracy 0.7% Overall Reference Tolerance 2.2V to 36.0V Operating Supply
Voltage and User Programmable
Reference 36.0V Operating Supply Voltage Reference Accuracy Maintained For
Entire Range of Supply Voltage Superior Accuracy and Easier
Compensation for Optoisolator
Application Improved Architecture Provides a
Known Linear Transconductance with
a +5% Typical Tolerance
BLOCK DIAGRAM
