LM317HVT/NOPB Equivalent & Substitute Parts

Part Overview

The LM317HVT/NOPB is a linear voltage regulator IC manufactured by Texas Instruments, designed for positive adjustable output applications. This TO-220-3 packaged component delivers 1.5A output current with input voltage capability up to 60V and adjustable output voltage ranging from 1.25V to 57V. The device is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent functional performance can be maintained within the allowed electrical and mechanical parameter ranges for this power management category.

Substiute Parts

LM317HVT/NOPB

Texas InstrumentsIn Stock: 3367LM317HVT/NOPB Datasheet

Current PartRFQ

LM317MTG

onsemiIn Stock: 9739LM317MTG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM317HVT/NOPB is determined by the following critical parameters: output configuration (positive adjustable), package type (TO-220-3), base product series (LM317), protection features (over current, over temperature, short circuit), and compliance certifications (RoHS3, REACH unaffected).

The LM317MTG manufactured by onsemi qualifies as a substitute based on matching output configuration, identical package designation, shared base product number, equivalent protection feature set, and identical compliance status. However, the LM317MTG operates within reduced electrical specifications: maximum input voltage of 40V versus 60V, maximum output voltage of 37V versus 57V, and output current of 500mA versus 1.5A. These parameter reductions establish the substitution boundary—the LM317MTG is suitable only for applications requiring lower voltage and current ratings within the specified ranges.

Parameter Comparison

Engineering Selection Recommendations

Both the LM317HVT/NOPB and LM317MTG maintain Active product status with identical RoHS3 compliance and REACH unaffected designation, ensuring regulatory continuity in component selection. The LM317MTG substitution is valid for applications operating within its specified electrical envelope: input voltages not exceeding 40V, output voltages not exceeding 37V, and load currents not exceeding 500mA. Applications requiring the full 60V input capability, 57V output range, or 1.5A output current must utilize the LM317HVT/NOPB. Both devices share identical package footprint (TO-220-3), protection feature architecture, and thermal operating range, enabling direct PCB layout compatibility when electrical requirements permit substitution.

Frequently Asked Questions (FAQ)

Q: Can the LM317MTG replace the LM317HVT/NOPB in all applications?

A: No. The LM317MTG operates within reduced electrical specifications. Substitution is valid only when application requirements fall within the LM317MTG limits: maximum input voltage 40V, maximum output voltage 37V, and maximum output current 500mA.

Q: Are the packages physically identical?

A: Yes. Both devices use TO-220-3 package designation, providing identical pin configuration and PCB footprint compatibility.

Q: What are the key electrical differences?

A: The LM317HVT/NOPB supports 60V maximum input and 1.5A output current. The LM317MTG supports 40V maximum input and 500mA output current. Output voltage ranges differ: 1.25V to 57V versus 1.2V to 37V respectively.

Q: Do both parts have equivalent protection features?

A: Yes. Both devices include over current, over temperature, and short circuit protection with identical PSRR specifications of 80dB to 65dB at 120Hz.

Q: Are compliance certifications identical?

A: Yes. Both parts are RoHS3 compliant and REACH unaffected, maintaining equivalent regulatory status.

Q: What is the quiescent current difference?

A: The LM317HVT/NOPB draws 12mA quiescent current while the LM317MTG draws 10mA, a 2mA difference with negligible impact on most applications.