Product details

VO (V) 1.3 Reference voltage 1.3 Initial accuracy (Max) (%) 0.40 Rating Catalog Temp coeff (Max) (ppm/ degree C) 44 Operating temperature range (C) 0 to 70
VO (V) 1.3 Reference voltage 1.3 Initial accuracy (Max) (%) 0.40 Rating Catalog Temp coeff (Max) (ppm/ degree C) 44 Operating temperature range (C) 0 to 70
PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (D) 8 19 mm² 3.91 x 4.9
  • Programmable Transconductance for Optimum Current Drive
  • Accessible 1.3V Precision Reference
  • Both Error Amplifier Inputs Available
  • 0.7% Overall Reference Tolerance
  • 0.4% Initial Accuracy
  • 2.2V to 36.0V 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 (0.50mA Typ)
  • Programmable Transconductance for Optimum Current Drive
  • Accessible 1.3V Precision Reference
  • Both Error Amplifier Inputs Available
  • 0.7% Overall Reference Tolerance
  • 0.4% Initial Accuracy
  • 2.2V to 36.0V 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 (0.50mA Typ)

The UC39432 is an adjustable precision analog controller with 100mA 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 UC39431 adjustable shunt regulator, has an on-board resistor network providing six preprogrammed voltage levels, as well as external programming capability.

The UC39432 is an adjustable precision analog controller with 100mA 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 UC39431 adjustable shunt regulator, has an on-board resistor network providing six preprogrammed voltage levels, as well as external programming capability.

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Technical documentation

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Type Title Date
* Data sheet Precision Analog Controller datasheet (Rev. A) 05 Dec 2008
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Application note DN-52 Adjustable Electronic Load for Low Voltage DC Applications 05 Sep 1999

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

UC39432 TINA-TI Reference Design

SLUM427.ZIP (82 KB) - TINA-TI Reference Design
Simulation model

UC39432 TINA-TI Spice Model

SLUM428.ZIP (22 KB) - TINA-TI Spice Model
Simulation model

UC39432 PSpice Average and Transient Model (Rev. A)

SLVJ010A.ZIP (218 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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PDIP (P) 8 View options
SOIC (D) 8 View options

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