UC19432-SP Precision Analog Controller | TI.com


Precision Analog Controller

Precision Analog Controller - UC19432-SP


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.


  • 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)

(1) Radiation tolerance is a typical value based upon initial device qualification. Radiation Lot Acceptance Testing is available – contact factory for details.

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Parametrics Compare all products in Offline and Isolated DC/DC Controller and Converter

Control Method
Vin (Min) (V)
Vin (Max) (V)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
-55 to 125    
See datasheet (CDIP)