TLVH431QDBVR,125

Overview

The TLVH431QDBVR,125 is a low voltage three-terminal adjustable precision shunt regulator manufactured by NXP USA Inc. It operates within a cathode-anode voltage range of 1 to 18 V and supports a sink current capability from 0.08 mA to 70 mA. The device features a standard reference voltage tolerance of 1.5%, with a typical temperature drift of 4 mV across the -40 °C to +125 °C operating range. Packaged in an SOT753 (SC-74A) surface-mount format, it is qualified under AEC-Q100 Grade 1 standards for automotive reliability.

Feature Summary

• Programmable output voltage set via two external resistors
• Low dynamic output impedance for stable regulation
• Active output circuitry providing sharp turn-on characteristics
• Qualified for extended automotive temperature ranges

Applications

• Shunt regulator circuits
• Precision current limiter designs
• Precision constant current sinks
• Isolated feedback loops for Switch Mode Power Supplies

Procurement Notes

Verify the specific suffix '125' against official NXP documentation to confirm manufacturing site or tape-and-reel specifications. Ensure the ordering code matches the required SOT753 package variant. Confirm that the standard grade tolerance aligns with system requirements before finalizing procurement orders.

Selection Notes

Select this component when an adjustable shunt regulator with automotive qualification is required. The SOT753 package offers a compact footprint suitable for space-constrained PCB layouts. Verify that the application load capacitance falls within the stability boundaries defined in the datasheet to prevent oscillation during operation.

Part Context

This part belongs to the TLVH431 family of low voltage adjustable precision shunt regulators. The family includes variants with different reference voltage tolerances and temperature grades. The Q-series designation indicates compliance with AEC-Q100 standards, distinguishing it from commercial-grade counterparts while maintaining identical electrical pinouts and functional behaviors.

Replacement Considerations

Compatible substitutes include other parts within the TLVH431 family such as TLVH431AQDBVR or TLVH431DQDBVR, provided the reference voltage tolerance and temperature range meet the design specifications. Ensure any replacement maintains the SOT753 package outline for direct board compatibility.