TL431BVDMR2

Overview

The TL431BVDMR2 is a three-terminal programmable shunt regulator diode from onsemi, utilizing the Micro8 (DM) package. It operates as a low temperature coefficient zener reference, programmable from Vref to 36 V using two external resistors. The device supports a cathode current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 Ω. It features a voltage reference tolerance of ±0.4% at 25°C and an equivalent full-range temperature coefficient of 50 ppm/°C. The component is designed for operation over an ambient temperature range of -40°C to +125°C.

Feature Summary

• Programmable output voltage capability up to 36 V
• High precision voltage reference with ±0.4% tolerance
• Extended industrial and automotive operating temperature range
• Low dynamic output impedance for stable regulation

Applications

• Feedback control for driving optocouplers in power supplies
• Voltage monitoring circuits
• Constant current sources and sinks
• Series pass regulators

Procurement Notes

Verify the specific suffix 'DMR2' corresponds to the Micro8 tape and reel packaging configuration. Confirm that the 'B' designation aligns with the required ±0.4% tolerance specification for your design. Ensure the thermal management strategy accounts for the junction-to-ambient resistance characteristics of the DM package within the intended application environment.

Selection Notes

Select this component when a high-precision, wide-temperature range shunt regulator is required in a compact surface-mount footprint. The Micro8 package offers internal lead frame modifications to increase power dissipation capability compared to standard SOIC-8 variants. Verify stability boundary conditions regarding load capacitance and cathode current to ensure loop stability in the target circuit topology.

Part Context

This part belongs to the TL431, A, B series family of programmable precision references manufactured by onsemi. The 'BV' designation indicates the extended temperature grade (-40°C to +125°C) and tighter tolerance class. The 'DMR2' suffix specifies the Micro8 plastic package with tape and reel shipping. This family serves as a versatile replacement for traditional Zener diodes in various analog and power management applications.

Replacement Considerations

NCV431BVDMR2G