LM79L05ACM Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM79L05ACM is a linear voltage regulator IC manufactured by Texas Instruments, designed to provide a fixed negative 5V output at 100mA. This Surface Mount device in 8-SOIC packaging is classified as Last Time Buy, indicating limited availability from the original manufacturer. Identifying equivalent and substitute parts ensures design continuity and supply chain flexibility for applications requiring negative voltage regulation in this performance class.

Substiute Parts

LM79L05ACM

Texas InstrumentsIn Stock: 8410LM79L05ACM Datasheet

Current PartRFQ

LM79L05ACM/NOPB

Texas InstrumentsIn Stock: 1268LM79L05ACM/NOPB Datasheet

DirectRFQ

L79L05ABD13TR

STMicroelectronicsIn Stock: 16597L79L05ABD13TR Datasheet

MFR RecommendedRFQ

L79L05ACD13TR

STMicroelectronicsIn Stock: 78520L79L05ACD13TR Datasheet

MFR RecommendedRFQ

MC79L05ABDR2G

onsemiIn Stock: 3772MC79L05ABDR2G Datasheet

MFR RecommendedRFQ

MC79L05ACDR2G

onsemiIn Stock: 3780MC79L05ACDR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM79L05ACM is determined by the following critical parameters:

• Output voltage specification: -5V fixed
• Output current capability: 100mA minimum
• Package type: 8-SOIC form factor
• Mounting configuration: Surface Mount
• Protection features: Over Temperature and Short Circuit protection
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected

Substitute parts must maintain identical output voltage and current ratings, use the same package footprint, and provide equivalent protection mechanisms. Variations in input voltage maximum ratings, quiescent current, PSRR specifications, and operating temperature ranges are permissible when the core functional requirements are met.

Parameter Comparison

Engineering Selection Recommendations

LM79L05ACM/NOPB (Texas Instruments) — Direct equivalent with identical electrical specifications and Active product status. Recommended for designs requiring continuity with the original part specification and Texas Instruments sourcing preference.

L79L05ACD13TR (STMicroelectronics) — Functionally equivalent with extended operating temperature range (0°C ~ 125°C) and improved quiescent current performance (5.5 mA). Suitable for applications requiring wider temperature operation within the specified 0°C minimum threshold. Higher inventory availability supports supply chain continuity.

L79L05ABD13TR (STMicroelectronics) — Functionally equivalent with extended operating temperature range (-40°C ~ 125°C) and improved quiescent current performance (5.5 mA). Recommended for applications requiring operation below 0°C or in extreme temperature environments. Highest inventory availability among STMicroelectronics options.

MC79L05ACDR2G (onsemi) — Functionally equivalent with extended operating temperature range (0°C ~ 125°C). Specified dropout voltage of 1.7V @ 40mA provides additional design margin information. Suitable for applications requiring onsemi sourcing or alternative supply chain diversification.

MC79L05ABDR2G (onsemi) — Functionally equivalent with extended operating temperature range (-40°C ~ 125°C) and specified dropout voltage of 1.7V @ 40mA. Recommended for applications requiring operation below 0°C or maximum temperature flexibility with onsemi component sourcing.

Frequently Asked Questions (FAQ)

Q: Can I use L79L05ACD13TR as a direct replacement for LM79L05ACM?

A: Yes. Both parts provide -5V fixed output at 100mA in 8-SOIC packaging with identical protection features and RoHS3 compliance. The L79L05ACD13TR operates across 0°C ~ 125°C versus the original 0°C ~ 70°C range, making it suitable for the specified operating window and beyond.

Q: What is the difference between L79L05ABD13TR and L79L05ACD13TR?

A: Both are STMicroelectronics parts with identical electrical performance. The primary difference is operating temperature range: L79L05ABD13TR supports -40°C ~ 125°C, while L79L05ACD13TR supports 0°C ~ 125°C. Select based on minimum operating temperature requirements.

Q: Are onsemi MC79L05 parts compatible with the Texas Instruments LM79L05ACM?

A: Yes. MC79L05ACDR2G and MC79L05ABDR2G provide identical -5V, 100mA output in 8-SOIC packaging with equivalent protection features. Both are ROHS3 compliant and suitable for direct substitution. The MC79L05ABDR2G offers extended low-temperature operation (-40°C minimum).

Q: Does the input voltage maximum difference (-35V vs -30V) affect substitution?

A: The LM79L05ACM specifies -35V maximum input, while STMicroelectronics and onsemi substitutes specify -30V maximum. If your application requires input voltages between -30V and -35V, the original LM79L05ACM or LM79L05ACM/NOPB must be used. For applications within -30V maximum input, all listed substitutes are suitable.

Q: What packaging options are available for these substitute parts?

A: All substitute parts use 8-SOIC (0.154", 3.90mm Width) Surface Mount packaging, identical to the LM79L05ACM. Packaging format variations (Tube, Cut Tape, Digi-Reel, Tape & Reel) do not affect electrical compatibility or PCB footprint.

Q: Are all listed parts RoHS3 compliant?

A: Yes. The LM79L05ACM and all substitute parts listed are ROHS3 Compliant with MSL Rating 1 (Unlimited) and REACH Unaffected status, meeting current environmental and regulatory requirements.