TPR433B-3STR-S

Overview

The TPR433B-3STR-S is a precision programmable shunt voltage reference in an SOT23G-3 package. It features a typical reference voltage of 2.495 V with a tolerance of 0.5% at 25°C. The output voltage is adjustable from VREF to 36 V using external feedback resistors. It supports a cathode current range of 1 mA to 80 mA and offers a low dynamic output impedance of 0.2 Ω. The device operates within a temperature range of −40°C to +125°C.

Feature Summary

• Adjustable output voltage settable between VREF and 36 V via external resistor network
• Low dynamic output impedance for stable regulation
• Wide operating temperature range suitable for industrial environments
• Capable of functioning as both a closed-loop regulator and open-loop comparator

Applications

• Power modules
• LED lighting systems
• Current sensing circuits
• Precision instrumentation
• Industrial control equipment

Procurement Notes

Verify the specific pin configuration required for the design, as the TPR433 and TPR434 share identical electrical characteristics but utilize different pin orders within the same SOT23G-3 package. Confirm that the application circuit provides a minimum cathode current of 0.4 mA to ensure proper regulation and stability during operation.

Selection Notes

Select this component when a high-precision, adjustable shunt reference is needed to replace standard Zener diodes. Ensure the design accommodates the specific pinout of the TPR433 variant versus the TPR434. Consider the 0.2 Ω output impedance for applications requiring tight voltage regulation under varying load currents up to 80 mA.

Part Context

This part belongs to the TPR43x series of precision programmable shunt voltage references manufactured by 3PEAK. The series includes variants like the TPR433 and TPR434, which offer identical performance metrics but differ in pin arrangement. These devices are designed for applications demanding accurate voltage referencing in compact surface-mount packages.

Replacement Considerations

TPR434B-3STR-S

FAQ

What is the difference between TPR433 and TPR434?

Both devices have identical electrical performance and package types. The only difference is the pin order; specifically, the positions of the CATHODE and REF pins are swapped between the two models.

Can this device be used as a comparator?

Yes, when operated in an open-loop configuration without feedback to the REF pin, the device acts as a comparator with high gain, provided a sufficient cathode current is applied.