TLVH431DQDBVR,115

Overview

The TLVH431DQDBVR,115 is a low voltage three-terminal shunt regulator from the NXP TLVH431 family. 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 D-Grade reference voltage tolerance of 0.75%, with a typical reference voltage of 1240 mV at 25 °C. It offers a typical temperature drift of 4 mV across the -40 °C to 125 °C range and maintains a typical output impedance of 0.1 Ω. Qualified under AEC-Q100 Grade 1, it utilizes an SOT753 package.

Feature Summary

• Programmable output voltage adjustable between the internal reference voltage and 18 V using external resistors
• AEC-Q100 qualified for automotive applications ensuring reliability in demanding environments
• Low output noise and high noise immunity suitable for precision regulation tasks
• Active output circuitry provides sharp turn-on characteristics for effective switching power supply feedback

Applications

• Shunt regulator circuits
• Precision constant current sink
• Isolated feedback loop for Switch Mode Power Supply (SMPS)
• Precision current limiter

Procurement Notes

Verify the specific ordering code TLVH431DQDBVR against the manufacturer's latest documentation to confirm availability and exact specifications. Ensure the selected component meets the required thermal and electrical constraints for the intended application environment. Cross-reference the package type and pinning configuration to guarantee compatibility with the printed circuit board design.

Selection Notes

Select this component when a precise, low-voltage shunt regulator with automotive qualification is required. The D-Grade tolerance ensures tight reference voltage accuracy compared to standard grades. Consider the SOT753 package dimensions and thermal resistance characteristics during layout planning. Verify that the operating current remains within the specified 0.08 mA to 70 mA range for stable performance.

Part Context

This part belongs to the TLVH431 family of low voltage adjustable precision shunt regulators manufactured by NXP Semiconductors. The family includes various grades offering different reference voltage tolerances and temperature ranges. These devices are designed as replacements for Zener diodes in on-board regulation and adjustable power supplies, providing superior stability and lower dynamic impedance.

Replacement Considerations

Compatible substitutes include other parts from the TLVH431 family such as TLVH431AQDBVR or TLVH431IDBVR, provided the reference voltage tolerance and operating temperature range requirements are met. Ensure any replacement matches the SOT753 package and pinout configuration.