TL431CDBVRE4

Overview

The TL431CDBVRE4 is a precision adjustable shunt regulator manufactured by Texas Instruments in an SOT-23-5 surface-mount package. It provides a reference voltage range from 2.495 V to 36 V with a standard tolerance of ±2%. The device supports a cathode current range of 1 mA to 100 mA and operates within a temperature range of 0°C to 70°C. It features low output impedance and is RoHS compliant.

Feature Summary

• Adjustable precise shunt regulation capability
• Wide operating voltage range up to 36 V
• Low output impedance for stable performance
• RoHS compliant construction

Applications

• Board-level voltage regulation
• Adjustable power supply circuits
• Switching power supply feedback loops
• Zener diode replacement applications

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free compliance and assembly site changes as per Texas Instruments Product Change Notices. Confirm that the SOT-23-5 package matches the design footprint requirements. Ensure the standard ±2% tolerance meets the circuit accuracy specifications before finalizing procurement orders.

Selection Notes

Select this component when a compact surface-mount solution is required for precision voltage referencing. The SOT-23-5 package offers space efficiency compared to larger through-hole options. Verify that the 0°C to 70°C commercial temperature range aligns with the operational environment constraints of the target application system.

Part Context

This part belongs to the TL431 family of programmable shunt regulators, widely used as a cost-effective alternative to Zener diodes. The 'E4' suffix typically denotes environmental compliance and manufacturing origin updates. It serves as a fundamental building block for feedback control loops in various power management architectures.

Replacement Considerations

• TL431CDBVR

FAQ

What is the minimum operating cathode current?

The device requires a minimum cathode current of 1 mA to maintain regulation.

Is the TL431CDBVRE4 suitable for high-frequency switching applications?

Yes, it features fast turn-on characteristics making it suitable for switching power supply feedback loops.