TLVH431AIDBVR

Overview

The TLVH431AIDBVR is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a voltage range of 1.24 V to 18 V and features an initial accuracy of 1.5%. The device supports a maximum cathode current of 70 mA and maintains a typical dynamic impedance of 0.22 Ω. It functions reliably across an operating temperature range from -40 °C to +85 °C, with a maximum temperature coefficient of 161 ppm/°C. The component is housed in a 5-pin SOT-23 surface-mount package.

Feature Summary

• Adjustable output voltage capability spanning from 1.24 V to 18 V via external resistor dividers
• High sink current capacity up to 70 mA for robust load handling
• Low dynamic impedance ensuring stable regulation under varying load conditions
• Wide operating current range supporting power-constrained designs

Applications

• Secondary side regulation in flyback switch-mode power supplies
• Battery-operated equipment requiring precise voltage monitoring
• Data acquisition systems needing stable reference voltages
• Voltage supervision circuits in industrial control systems

Procurement Notes

Verify the specific suffix 'DBVR' corresponds to the SOT-23-5 package and reel packaging configuration. Confirm the 1.5% accuracy grade matches design requirements, as other grades like 0.5% or 1% may exist under different suffixes. Ensure the -40°C to +85°C industrial temperature range aligns with environmental specifications. Cross-reference the datasheet revision date to ensure compliance with current RoHS standards and material declarations.

Selection Notes

Select this component when a low-voltage adjustable reference is required with higher current drive than standard TLV431 variants. The 1.5% accuracy offers a balance between cost and performance for general-purpose applications. Consider the SOT-23-5 footprint for space-constrained PCB layouts. Evaluate the 161 ppm/°C temperature coefficient against thermal stability needs in high-precision circuits where tighter tolerances might necessitate alternative packages or higher-grade devices.

Part Context

This part belongs to the TLVH431 family of low-voltage adjustable precision shunt regulators. It serves as a modern replacement for traditional Zener diodes and older TL431 series components in low-voltage environments. The family emphasizes low operating currents and wide dynamic ranges, making it suitable for battery-powered and energy-efficient electronic designs requiring reliable voltage referencing.

Replacement Considerations

TLVH431AIDBVT is a direct pin-compatible substitute with identical electrical characteristics but potentially different packaging options.