TS3431CIZ

Overview

The TS3431CIZ is a programmable shunt voltage reference manufactured by STMicroelectronics, housed in a TO-92 plastic package. It provides an adjustable output voltage ranging from 1.24 V to 24 V using an external resistor bridge. The device features a reference input voltage of 1.24 V with ±2% precision at 25°C and operates within an industrial temperature range of -40°C to +125°C. It supports a cathode operating current between 0.5 mA and 100 mA, with a maximum cathode-to-anode voltage of 25 V.

Feature Summary

• Adjustable output voltage settable between 1.24 V and 24 V via external resistors
• Guaranteed temperature stability across the full industrial operating range
• High sink current capability supporting loads up to 100 mA

Applications

• Computers
• Instrumentation
• Battery chargers
• Switch mode power supplies
• Battery operated equipment

Procurement Notes

Verify the specific suffix 'CIZ' corresponds to the required ±2% accuracy level and TO-92 through-hole packaging configuration. Confirm that the component meets the necessary thermal dissipation requirements for the intended application environment. Ensure compatibility with existing circuit designs regarding pinout orientation and lead spacing specifications.

Selection Notes

Select this component when a robust, low-cost shunt reference is needed for general-purpose regulation tasks. The TO-92 package facilitates easy prototyping and manual assembly compared to surface-mount alternatives. Consider the ±2% initial accuracy sufficient for applications where tighter tolerances are not critical or can be calibrated out during system testing.

Part Context

This part belongs to the TS3431 family of programmable shunt voltage references designed as industry-standard replacements for similar legacy components. The series offers multiple precision grades and packaging options to suit diverse design constraints. The TS3431CIZ specifically targets cost-sensitive applications requiring reliable performance in standard through-hole layouts.

Replacement Considerations

TS3431AILT

FAQ

What is the minimum operating current for the TS3431CIZ?

The minimum operating current (IKMIN) is specified as 0.4 mA at 25°C and increases to 0.5 mA across the extended temperature range of -40°C to +125°C.

How is the output voltage adjusted on this device?

The output voltage is programmed to any value between 1.24 V and 24 V by connecting an external resistor bridge network to the reference input pin.