LM2931Z-5.0RPG Equivalent & Substitute Parts

Part Overview

The LM2931Z-5.0RPG is a linear voltage regulator IC from onsemi, delivering a fixed 5V output at 100mA in a TO-92-3 through-hole package. This device is classified as a Power Management PMIC with active product status and full ROHS3 compliance. Finding equivalent and substitute parts is necessary to address supply chain flexibility, inventory availability, and design optimization across manufacturing batches and procurement cycles.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	5V
Output Current	100mA
Input Voltage (Max)	26V
Voltage Dropout (Max)	0.6V @ 100mA
Quiescent Current	1 mA
Operating Temperature Range	-40°C ~ 125°C
Package Type	TO-92-3 (TO-226)
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LM2931Z-5.0RPG is determined by the following critical parameters:

Fixed output voltage of 5V
Output current capability of 100mA or greater
Maximum input voltage of 26V or higher
Through-hole TO-92-3 package compatibility
Operating temperature range that meets or exceeds -40°C ~ 125°C
ROHS3 compliance and active or equivalent product status

Parts are grouped into two categories: parametric equivalents (identical specifications) and similar alternatives (enhanced or comparable performance with minor deviations).

Parameter Comparison

Part Number	Manufacturer	Output Current	Voltage Dropout (Max)	Quiescent Current	Operating Temp Range	Product Status	Inventory
LM2931Z-5.0RPG	onsemi	100mA	0.6V @ 100mA	1 mA	-40°C ~ 125°C	Active	2993 Pcs
LM2931AZ-5.0RPG	onsemi	100mA	0.6V @ 100mA	1 mA	-40°C ~ 125°C	Active	12900 Pcs
LM2931Z-5.0/NOPB	Texas Instruments	100mA	0.3V @ 100mA	1 mA	-40°C ~ 85°C	Last Time Buy	17800 Pcs
TL750L05CLPRE3	Texas Instruments	150mA	0.6V @ 150mA	2 mA	0°C ~ 125°C	Active	2601 Pcs

Engineering Selection Recommendations

LM2931AZ-5.0RPG (onsemi): This part is a parametric equivalent with identical electrical specifications and active product status. It offers superior inventory availability (12900 Pcs) compared to the main part. Selection is appropriate for direct substitution without design modification.

LM2931Z-5.0/NOPB (Texas Instruments): This part meets core substitution criteria with identical output current and voltage specifications. However, it carries Last Time Buy status, indicating discontinued production. The operating temperature range is limited to -40°C ~ 85°C, which does not cover the full upper temperature requirement of 125°C. Selection requires verification that the reduced temperature range is acceptable for the application. Inventory availability is high at 17800 Pcs.

TL750L05CLPRE3 (Texas Instruments): This part provides enhanced output current capability (150mA versus 100mA) and active product status. The operating temperature range is 0°C ~ 125°C, which does not extend to the lower -40°C specification. Quiescent current is elevated to 2 mA. Selection is suitable only for applications where the reduced lower temperature limit and increased quiescent current are acceptable.

Frequently Asked Questions (FAQ)

Q: Can LM2931AZ-5.0RPG replace LM2931Z-5.0RPG without any circuit modifications?

A: Yes. The LM2931AZ-5.0RPG is a parametric equivalent with identical output voltage, current, dropout voltage, quiescent current, and operating temperature range. Direct substitution is valid.

Q: Why is LM2931Z-5.0/NOPB marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued this part number. While inventory is currently available, future procurement may not be possible. This status does not affect immediate substitution eligibility but should be considered for long-term supply chain planning.

Q: Can TL750L05CLPRE3 be used in applications requiring -40°C operation?

A: No. The TL750L05CLPRE3 operating temperature range begins at 0°C, not -40°C. Applications requiring operation below 0°C must use LM2931Z-5.0RPG or LM2931AZ-5.0RPG.

Q: What is the advantage of TL750L05CLPRE3 over the main part?

A: The TL750L05CLPRE3 provides 150mA output current capacity, compared to 100mA for the LM2931Z-5.0RPG. This higher current capability may eliminate the need for external current amplification in designs requiring up to 150mA at 5V output.

Q: Are all substitute parts in the same TO-92-3 package?

A: Yes. All listed parts use the TO-92-3 (TO-226) through-hole package, ensuring mechanical and pin compatibility.

Q: Do all parts meet RoHS3 compliance?

A: Yes. LM2931Z-5.0RPG, LM2931AZ-5.0RPG, LM2931Z-5.0/NOPB, and TL750L05CLPRE3 are all ROHS3 compliant.

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