TLVH431BQDBVT

Overview

The TLVH431BQDBVT is a low-voltage adjustable precision shunt regulator from the Texas Instruments TLVH431B series. It operates within a supply voltage range of 2.5 V to 20 V and provides an adjustable output voltage from 1.24 V to 18 V. The device features an initial accuracy of 0.5% and a temperature coefficient of 138 PPM/°C. It supports a maximum cathode current of 80 mA with a minimum operating current of 80 µA. The component is housed in a SOT-23-5 package and functions reliably across an extended temperature range of -40°C to +125°C.

Feature Summary

• Provides high-precision voltage regulation with 0.5% initial accuracy for stable reference applications.
• Supports wide operating current ranges, accommodating both low standby currents and higher load demands up to 80 mA.
• Designed for low-voltage systems with an input voltage capability extending up to 20 V.

Applications

• Battery-powered equipment requiring precise voltage monitoring
• Portable devices utilizing low-voltage power supplies
• Industrial control systems needing reliable shunt regulation

Procurement Notes

Verify the specific suffix 'VT' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation. Ensure the selected variant matches the required SOT-23-5 footprint for PCB layout compatibility. Cross-reference the datasheet for any recent product change notices affecting pinout or electrical characteristics.

Selection Notes

Select this component when designs require tighter initial accuracy than standard TLV431 variants. The wider operating current range makes it suitable for applications where load conditions vary significantly. Consider the SOT-23-5 package size constraints against available board space. Verify that the 20 V maximum input voltage aligns with the system's supply rails.

Part Context

This part belongs to the TLVH431B family, which offers improved performance over previous generations. It serves as a drop-in replacement for many legacy shunt regulators while providing enhanced accuracy and lower noise characteristics. The device integrates a bandgap reference and error amplifier within a compact surface-mount package.

Replacement Considerations

The TLVH431BQDBVR is a reel-packaged equivalent of the same electrical specification. For automotive applications, verify if AEC-Q100 qualified variants like TLVH431AQDBZT are required. Standard TLV431 parts may not meet the 0.5% accuracy or 80 mA current requirements.