1FEATURES

• QML-V Qualified, SMD 5962-09233

• Rad Tolerant: 30 kRad(Si) TID (1)

– TID Dose Rate = 10 mRad/sec

• Programmable Transconductance for

Optimum Current Drive

• Accessible 1.3 V precision Reference

• Both Error Amplifier Inputs Available

• 0.7% Overall Reference Tolerance

• 0.4% Initial Accuracy

• 2.4-V to 24-V Operating Supply Voltage and

User Programmable Reference

• Reference Accuracy Maintained for Entire

Range of Supply Voltage

• Superior Accuracy and Easier Compensation

for Optoisolator Application

• Low Quiescent Current (0.5 mA Typ)

DESCRIPTION

The UC19432 is an adjustable precision analog controller with 100-mA sink capability if the ISET pin is

grounded. A resistor between ISET and ground will modify the transconductance while decreasing the maximum

current sink. This will add further control in the optocoupler configuration. The trimmed precision reference along

with the non-inverting error amplifier inputs are accessible for custom configuration. A sister device, the UC19431

adjustable shunt regulator, has an on-board resistor network providing six preprogrammed voltage levels, as well

as exernal programming capability.