TL432IDBVR

Overview

The TL432IDBVR is a three-terminal adjustable precision shunt regulator manufactured by Texas Instruments. It operates within an input voltage range of 2.5 V to 36 V, with a maximum series Vref-input voltage of 37 V. The device features an initial accuracy of 2% and a temperature coefficient of 92 PPM/°C. It supports a maximum cathode current of 100 mA and maintains a minimum cathode current of 600 µA. The component is housed in a surface-mount SOT-23-5 package and functions across a temperature range from -40°C to +85°C.

Feature Summary

• Provides adjustable reference voltage functionality via external resistors
• Features low output impedance for stable regulation performance
• Offers high thermal stability across specified operating temperatures

Applications

• Board-level voltage regulators
• Adjustable power supplies
• Switching power supply feedback loops

Procurement Notes

Verify the specific suffix (DBVR) confirms the SOT-23-5 tape-and-reel packaging configuration. Ensure the order quantity aligns with distributor reel requirements. Confirm that the 2% accuracy grade meets the circuit tolerance specifications. Validate that the 85°C commercial temperature rating is sufficient for the intended application environment. Check for RoHS compliance status if required by project standards.

Selection Notes

Select this component when a compact, adjustable shunt regulator is required for space-constrained designs. The SOT-23-5 package offers a small footprint suitable for dense PCB layouts. Choose this part over fixed references when variable output voltages are necessary. Consider the 100 mA current capability for driving moderate loads or feedback networks. Verify that the 92 PPM/°C drift rate satisfies the system's long-term stability requirements.

Part Context

This device belongs to the TL432 family of adjustable precision shunt regulators. It shares electrical characteristics with the TL431 but utilizes a different pinout arrangement compatible with SOT-23-3 and SOT-23-5 packages. The TL432 series is designed to replace Zener diodes in various applications, offering superior voltage regulation and lower dynamic impedance compared to standard discrete solutions.

Replacement Considerations

The TL432IDBZT serves as a direct physical replacement using the SOT-23-3 package variant. Designers must verify pin compatibility when substituting between DBV and DBZ package types due to differing pin arrangements.