Precision Adjustable Shunt Regulator UC19431
UC29431
UC39431
UC39431B FEATURES DESCRIPTION Multiple On-Chip Programmable
Reference Voltages The UC39431 is an adjustable shunt voltage regulator with 100mA sink capability. The architecture, comprised of an error amplifier and
transconductance amplifier, gives the user separate control of the small
signal error voltage frequency response along with a fixed linear
transconductance. A minimum 3MHz gain bandwidth product for both the
error and transconductance amplifiers assures fast response. In addition to
external programming, the IC has three internal resistors that can be connected in six different configurations to provide regulated voltages of 2.82V,
3.12V, 5.1V, 7.8V, 10.42V, and 12.24V. A sister device (UC39432) provides
access to the non-inverting error ampilifer input and reference, while eliminating the three internal resistors. 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 UDG-95087 04/99 UC19431
UC29431
UC39431
UC39431B CONNECTION DIAGRAM ABSOLUTE MAXIMUM RATINGS
Supply Voltage: V . 36V …
