TLVH431DQDBVR,125

Overview

The TLVH431DQDBVR is a low voltage three-terminal shunt regulator from the NXP TLVH431 family, housed in an SOT753 (SC-74A) surface-mount package. It features D-Grade reference voltage tolerance of 0.75%, with a typical Vref of 1240 mV at 25 °C and a range of 1231 mV to 1249 mV. The device operates within a temperature range of -40 °C to +125 °C, supporting an output voltage range between Vref and 18 V set by external resistors. It offers a sink current capability from 0.08 mA to 70 mA and is AEC-Q100 Grade 1 qualified.

Feature Summary

• Programmable output voltage adjustable up to 18 V using two external resistors
• D-Grade precision with 0.75% reference voltage tolerance for high accuracy
• Low output noise and low dynamic cathode-anode impedance
• Automotive grade qualification compliant with AEC-Q100 standards

Applications

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

Procurement Notes

Verify the specific suffix DBVR indicates the SOT753 package configuration before procurement. Confirm that the D-Grade designation aligns with required reference voltage tolerances for the design. Ensure the operating environment falls within the specified -40 °C to +125 °C ambient temperature range. Check for any recent product status updates or end-of-life notices on the manufacturer's official website.

Selection Notes

Select this component when high precision is required due to its 0.75% D-Grade tolerance compared to standard grades. Choose the SOT753 package if space constraints or pinout requirements differ from the SOT23 option. Verify that the application requires automotive reliability certification, as this part is AEC-Q100 qualified. Consider the thermal resistance characteristics if power dissipation limits are critical in the PCB layout.

Part Context

This device belongs to the TLVH431 family of low voltage adjustable precision shunt regulators manufactured by NXP Semiconductors. The family includes various packages and temperature grades, with the DQDBVR variant specifically offering the highest precision tolerance and extended automotive temperature range in the compact SOT753 footprint.

Replacement Considerations

Other variants within the TLVH431 family may serve as substitutes if package or tolerance differences are acceptable. For example, TLVH431AQDBVR offers 1% tolerance, while TLVH431CDBZR provides 1.5% tolerance in an SOT23 package. Pin compatibility must be verified when switching between SOT23 and SOT753 packages.