NJM431M

Description：IC VREF SHUNT ADJ 2.2% 8DMP
Series：-
Mfr：Nisshinbo Micro Devices Inc.
Package：Tube

SKU:4ea2f2bf905a Category: Voltage Reference Brand: Nisshinbo Micro Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC VREF SHUNT ADJ 2.2% 8DMP
Series：-
Mfr：Nisshinbo Micro Devices Inc.
Package：Tube
Output Type：Adjustable
Voltage - Output (Min/Fixed)：2.495V
Voltage - Output (Max)：36 V
Current - Output：100 mA
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.209", 5.30mm Width)
Supplier Device Package：8-DMP
Grade：-
Qualification：-

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NJM431M

Overview

The NJM431M is a three-terminal adjustable precision shunt regulator manufactured by Nisshinbo Micro Devices Inc. utilizing bipolar technology. It operates within a cathode voltage range of VREF to 36V, with a typical reference voltage of 2.495V. The device supports a continuous cathode current from 1mA to 100mA and features a low dynamic output impedance of typically 0.2Ω. Designed for surface-mount applications, it is housed in an 8-pin DMP package and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

Adjustable output voltage set between approximately 2.5V and 36V using two external resistors
Fast turn-on response capability with sharp switching characteristics
Low dynamic output impedance ensuring stable regulation under varying load conditions

Applications

Shunt regulators
Series regulators for small power supplies
Isolation regulators with optocouplers
Constant current sources

Procurement Notes

Verify the specific package type against project requirements, as the NJM431 family includes DIP8, DMP8, TO-92, and SOT-89 variants. Confirm that the DMP8 package aligns with PCB footprint constraints. Ensure design margins account for the safety operating boundary to prevent oscillation during operation.

Selection Notes

Select this component when a precise, adjustable voltage reference is required in a compact surface-mount form factor. The DMP8 package offers a balance of thermal performance and board space efficiency. Consider the 100mA maximum cathode current limit when designing for higher power dissipation scenarios or heavy load regulation tasks.

Part Context

The NJM431 series belongs to Nisshinbo's lineup of precision analog control ICs. The 'M' suffix specifically denotes the 8-pin DMP (Dual Mini Plastic) surface-mount package variant. This distinguishes it from through-hole options like the DIP8 or TO-92, catering to automated assembly processes in modern electronics manufacturing.