NCV431BVDMR2G

Overview

The NCV431BVDMR2G is a three-terminal programmable shunt regulator diode from onsemi, part of the NCV series designed for automotive and high-reliability applications. It operates as a low temperature coefficient zener reference, programmable from Vref to 36 V using two external resistors. The device features a wide operating current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 Ω. It offers a voltage reference tolerance of ±0.4% at 25°C and an equivalent full-range temperature coefficient of 50 ppm/°C. The component is AEC-Q100 qualified and PPAP capable.

Feature Summary

• Automotive-grade qualification with AEC-Q100 standards and PPAP capability
• Temperature compensated operation across the full rated industrial and extended temperature range
• Low output noise voltage for precision reference applications
• Internally modified Micro8 package design enhancing power dissipation capability

Applications

• Feedback control for driving optocouplers in switching power supplies
• Voltage monitoring circuits requiring precise threshold detection
• Constant current sources and sinks for LED or battery management
• Series pass regulators and adjustable linear regulators

Procurement Notes

Verify that the specific ordering suffix DMR2G corresponds to the Micro8 package (CASE 846A) and tape & reel shipping configuration. Confirm the NCV prefix indicates compliance with unique site and control change requirements mandated by automotive customers. Ensure the BV designation matches the required ±0.4% voltage reference tolerance specification for the target application.

Selection Notes

Select this component when an extended operating temperature range up to +125°C is required alongside strict automotive quality standards. The Micro8 package is suitable for space-constrained designs where improved thermal performance over standard SOIC-8 is needed. Consider the ±0.4% tolerance if tighter accuracy than the standard TL431B is necessary for the reference circuit.

Part Context

This device belongs to the TL431 family of programmable precision references manufactured by onsemi. The NCV prefix specifically denotes parts intended for automotive and other applications requiring rigorous supply chain controls and unique site verification. It serves as a direct replacement for standard TL431 devices in designs needing higher reliability and wider temperature operation.

Replacement Considerations

NCV431BVDR2G (SOIC-8 package)

FAQ

What is the maximum operating ambient temperature for the NCV431BVDMR2G?

The NCV431BVDMR2G supports an operating ambient temperature range from -40°C to +125°C.

How does the Micro8 package differ electrically from the standard SOIC-8?

The Micro8 package is an internally modified SOIC-8 where pins 2, 3, 6, and 7 are electrically common to the die attach flag, which increases power dissipation capability when mounted on a printed circuit board.