LA431NHPA

Description：IC VREF SHUNT ADJ TO92
Series：-
Mfr：Diodes Incorporated
Package：Tape & Reel (TR)

SKU:40ba0bda0b93 Category: Voltage Reference Brand: Diodes Incorporated

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Product introduction

Product Detailed Parameters

Description：IC VREF SHUNT ADJ TO92
Series：-
Mfr：Diodes Incorporated
Package：Tape & Reel (TR)
Output Type：Adjustable
Voltage - Output (Min/Fixed)：2.495V
Voltage - Output (Max)：36 V
Current - Output：100 mA
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Through Hole
Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
Supplier Device Package：TO-92
Grade：-
Qualification：-

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LA431NHPA

Overview

The LA431NHPA is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It features a reference voltage of 2.495V with a tolerance of ±1.0%. The device supports an adjustable output voltage range from VREF to 36V and provides a sink current capability of 120mA. It operates within a cathode voltage range of VREF to 36V and maintains a typical minimum cathode current for regulation of 0.1mA. The component is housed in a TO-92-3L package, offers a low dynamic output impedance of 0.2Ω (typical), and functions reliably across an operating temperature range of -40°C to 125°C.

Feature Summary

Provides a precise reference voltage of 2.495V with guaranteed thermal stability over applicable temperature ranges.
Features active output circuitry that delivers sharp turn-on characteristics, serving as an effective replacement for Zener diodes.
Offers adjustable output voltage programmable between the reference voltage and 36V using two external resistors.

Applications

Switching Mode Power Supply
Voltage Reference Application

Procurement Notes

Verify the specific ordering suffix 'HPA' corresponds to the TO-92-3L package configuration and RoHS/Halogen-free taping format. Confirm the 'N' designation indicates the 1.0% reference voltage tolerance grade required for the design. Ensure compliance with the manufacturer's standard terms and conditions regarding product selection and application suitability.

Selection Notes

Select this component when a low-voltage, high-precision shunt regulator is needed to replace discrete Zener diodes. The LA431NHPA is suitable for applications requiring a stable reference voltage with tight tolerance. Consider the 120mA sink current limit and the 0.2Ω dynamic output impedance for load regulation requirements. Verify that the TO-92-3L package meets the mechanical constraints of the target PCB layout.

Part Context

The LA431 series consists of low-voltage three-terminal adjustable shunt regulators designed for high precision and thermal stability. The LA431NHPA specifically denotes the variant with 1.0% reference voltage tolerance packaged in TO-92-3L. This family is engineered to provide superior performance over standard Zener diodes, particularly in applications demanding accurate voltage referencing and fast response times.