TLV431BIDBZR

Overview

The TLV431BIDBZR is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 1.24 V to 36 V and features an initial accuracy of ±0.5%. The device supports a maximum cathode current of 100 mA and functions across a temperature range of -40°C to +85°C. Packaged in a surface-mount SOT-23-3 case, it serves as a high-performance reference for power management applications.

Feature Summary

• Provides adjustable precision voltage regulation with ±0.5% initial accuracy
• Operates over a wide output voltage range from 1.24 V to 36 V
• Supports high cathode current capability up to 100 mA
• Designed for low-voltage applications with extended industrial temperature stability

Applications

• Precision voltage references in power supply circuits
• Feedback control loops in switching regulators
• Battery charging systems requiring accurate voltage monitoring
• Industrial instrumentation signal conditioning

Procurement Notes

Verify the specific suffix 'IDBZR' corresponds to the SOT-23-3 package and ±0.5% accuracy grade. Confirm RoHS compliance status and check for any recent Product Change Notifications (PCN) regarding packaging or manufacturing site changes. Ensure the ordering part number matches the required tolerance and thermal specifications for the target application environment.

Selection Notes

Select this component when high accuracy is required in low-voltage environments. The ±0.5% tolerance offers superior performance compared to standard 1% variants. Consider the 100 mA current drive capability for driving heavier loads directly. Verify that the SOT-23-3 footprint fits the PCB layout constraints and that the operating temperature range meets system requirements.

Part Context

This device belongs to the TLV431 family of adjustable shunt regulators. It shares functional similarities with the TL431 but is optimized for lower voltage operation. The 'B' designation indicates the ±0.5% accuracy grade, while 'I' denotes the industrial temperature range. It is widely used as a replacement for discrete zener diodes in feedback networks.

Replacement Considerations

Direct pin-compatible alternatives include the TLV431AIDBZR for 1% accuracy or the TLVH431BIDBZR for wider operating current ranges. Verify electrical parameters such as cathode current limits and temperature coefficients before substitution to ensure circuit stability.