LM79L12ACM Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The LM79L12ACM is a linear voltage regulator IC manufactured by Texas Instruments, designed for negative fixed output applications. This Surface Mount device delivers -12V at 100mA output current and is housed in an 8-SOIC package. The part is currently in Last Time Buy status, making identification of equivalent and substitute parts essential for design continuity and procurement planning. Substitute parts are necessary to ensure supply chain flexibility and long-term component availability.

Substiute Parts

LM79L12ACM

Texas InstrumentsIn Stock: 2004LM79L12ACM Datasheet

Current PartRFQ

LM79L12ACM/NOPB

Texas InstrumentsIn Stock: 1308LM79L12ACM/NOPB Datasheet

DirectRFQ

L79L12ACD13TR

STMicroelectronicsIn Stock: 10249L79L12ACD13TR Datasheet

MFR RecommendedRFQ

MC79L12ABDR2G

onsemiIn Stock: 5267MC79L12ABDR2G Datasheet

MFR RecommendedRFQ

MC79L12ACDR2G

onsemiIn Stock: 5199MC79L12ACDR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM79L12ACM is determined by strict equivalence across the following critical parameters:

• Output Configuration: Negative
• Output Type: Fixed
• Output Voltage: -12V
• Output Current: 100mA minimum
• Package / Case: 8-SOIC form factor
• Input Voltage Rating: -35V maximum
• Protection Features: Over Temperature and Short Circuit protection
• RoHS Compliance: ROHS3 Compliant

All substitute parts listed maintain identical electrical specifications for output voltage, output current, input voltage rating, and package form factor. Variations in operating temperature range, quiescent current, and PSRR do not affect functional substitution for this negative linear regulator application.

Parameter Comparison

Engineering Selection Recommendations

The LM79L12ACM/NOPB from Texas Instruments is the direct equivalent part with identical electrical and thermal specifications. This part maintains Active product status and is recommended as the primary substitute for the Last Time Buy LM79L12ACM.

The L79L12ACD13TR from STMicroelectronics and both MC79L12 variants from onsemi are functionally equivalent substitutes. All three alternative manufacturers' parts meet the core electrical requirements: -12V output, 100mA current capacity, -35V maximum input voltage, and 8-SOIC packaging. These parts are in Active product status and provide supply chain alternatives.

The onsemi MC79L12ABDR2G offers the widest operating temperature range (-40°C to 125°C), suitable for applications requiring extended temperature performance. The MC79L12ACDR2G operates from 0°C to 125°C. The STMicroelectronics L79L12ACD13TR operates from 0°C to 125°C.

All substitute parts carry ROHS3 compliance and identical protection features. Selection among substitutes should be based on availability, packaging format preference (Cut Tape vs. Tube), and application temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can I use LM79L12ACM/NOPB as a direct replacement for LM79L12ACM?

A: Yes. The LM79L12ACM/NOPB is a direct equivalent with identical electrical specifications, output voltage (-12V), output current (100mA), input voltage rating (-35V), and 8-SOIC package. The only difference is product status (Active vs. Last Time Buy).

Q: What is the difference between the Texas Instruments and STMicroelectronics versions?

A: Both deliver -12V at 100mA in 8-SOIC packaging. The Texas Instruments LM79L12ACM/NOPB operates 0°C to 70°C with 52dB PSRR. The STMicroelectronics L79L12ACD13TR operates 0°C to 125°C with 42dB PSRR. Both are functionally interchangeable for the specified electrical performance.

Q: Are the onsemi MC79L12 parts compatible with the original LM79L12ACM?

A: Yes. Both MC79L12ACDR2G and MC79L12ABDR2G deliver -12V at 100mA in 8-SOIC packages with identical input voltage ratings and protection features. The MC79L12ABDR2G supports -40°C to 125°C operation, while the MC79L12ACDR2G supports 0°C to 125°C.

Q: Does packaging format affect substitution?

A: No. All listed parts use the same 8-SOIC (0.154", 3.90mm Width) package form factor. Packaging format differences (Tube vs. Cut Tape) relate to supply and handling only, not electrical or mechanical compatibility.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute should I choose for extended temperature applications?

A: The onsemi MC79L12ABDR2G supports the widest operating range (-40°C to 125°C). For applications requiring 0°C to 125°C operation, both the STMicroelectronics L79L12ACD13TR and onsemi MC79L12ACDR2G are suitable.