LM2936MP-5.0 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM2936MP-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output at 50mA in SOT-223-4 surface mount packaging. This device is classified as Last Time Buy, indicating end-of-life status. The regulator provides over temperature, reverse polarity, and short circuit protection across an operating temperature range of -40°C to 125°C with a maximum input voltage of 40V and dropout voltage of 0.4V at 50mA.

Alternative equivalent and substitute parts are necessary due to the Last Time Buy status of the main part number. Equivalent variants with Active product status and substitute regulators with higher current ratings or enhanced specifications are available to ensure design continuity and long-term supply chain reliability.

Key Parameters

Parameter	LM2936MP-5.0
Manufacturer	Texas Instruments
Output Voltage (Fixed)	5V
Output Current	50mA
Input Voltage (Max)	40V
Dropout Voltage (Max)	0.4V @ 50mA
Quiescent Current	9 µA
PSRR	60dB (120Hz)
Protection Features	Over Temperature, Reverse Polarity, Short Circuit
Operating Temperature	-40°C ~ 125°C
Package	SOT-223-4
RoHS Status	ROHS3 Compliant
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitute parts are organized into two categories based on substitution logic:

Category 1: Direct Parametric Equivalents (Texas Instruments LM2936 Series) These parts maintain identical electrical specifications to the main part number while differing only in packaging configuration (Cut Tape vs. Tape & Reel) or qualification grade. All share the same 5V output, 50mA current rating, 40V maximum input voltage, and 0.4V dropout voltage. These parts are suitable for direct replacement in applications where the main part number is no longer available.

Key matching parameters: Output voltage (5V), output current (50mA), input voltage rating (40V), dropout voltage (0.4V @ 50mA), quiescent current (9 µA), PSRR (60dB @ 120Hz), protection features (Over Temperature, Reverse Polarity, Short Circuit), operating temperature range (-40°C ~ 125°C), SOT-223-4 package.

Category 2: Functional Substitutes (Higher Current Rating or Enhanced Specifications) These parts provide 5V fixed output in SOT-223 packaging but with higher current ratings (100mA to 150mA) or enhanced protection features. These are suitable for applications where the 50mA output current of the main part is insufficient or where additional performance margins are required.

Key matching parameters: Output voltage (5V), output configuration (Positive Fixed), package family (SOT-223), surface mount mounting type, RoHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage (Max)	Quiescent Current	PSRR	Package	Product Status	Packaging Type
LM2936MP-5.0	Texas Instruments	5V	50mA	40V	0.4V @ 50mA	9 µA	60dB (120Hz)	SOT-223-4	Last Time Buy	Cut Tape
LM2936MP-5.0/NOPB	Texas Instruments	5V	50mA	40V	0.4V @ 50mA	9 µA	60dB (120Hz)	SOT-223-4	Active	Cut Tape
LM2936MPX-5.0/NOPB	Texas Instruments	5V	50mA	40V	0.4V @ 50mA	9 µA	60dB (120Hz)	SOT-223-4	Active	Cut Tape
LM2936QMP-5.0/NOPB	Texas Instruments	5V	50mA	40V	0.4V @ 50mA	9 µA	60dB (120Hz)	SOT-223-4	Active	Tape & Reel
LM2936QMPX-5.0/NOPB	Texas Instruments	5V	50mA	40V	0.4V @ 50mA	9 µA	60dB (120Hz)	SOT-223-4	Active	Tape & Reel
TLE42644GHTSA3	Infineon Technologies	5V	100mA	40V	0.5V @ 100mA	60 µA	68dB (100Hz)	SOT-223-4	Active	Tape & Reel
NCV2931AST-5T3G	onsemi	5V	100mA	26V	0.6V @ 100mA	1 mA	90dB (120Hz)	SOT-223	Active	Cut Tape
NCV8664CST50T3G	onsemi	5V	150mA	45V	0.6V @ 150mA	29 µA	67dB (100Hz)	SOT-223	Active	Cut Tape
L5150BNTR	STMicroelectronics	5V	150mA	40V	0.5V @ 150mA	80 µA	48dB (100Hz)	SOT-223	Active	Cut Tape
MC78LC30NTRG	onsemi	3V	80mA	12V	0.06V @ 1mA	3.6 µA	—	SOT-23-5	Active	Tape & Reel

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select LM2936MP-5.0/NOPB, LM2936MPX-5.0/NOPB, LM2936QMP-5.0/NOPB, or LM2936QMPX-5.0/NOPB. All maintain identical electrical performance to the main part number. The /NOPB suffix indicates lead-free RoHS3 compliance. Choose between Cut Tape and Tape & Reel packaging based on assembly requirements. The QMP variants include AEC-Q100 automotive qualification for applications requiring automotive-grade components.

For Higher Current Applications (100mA Output): TLE42644GHTSA3 from Infineon Technologies provides 100mA output current while maintaining 40V maximum input voltage and 0.4V dropout voltage specification. This part includes AEC-Q100 automotive qualification and enhanced PSRR of 68dB at 100Hz. NCV2931AST-5T3G from onsemi also provides 100mA output with AEC-Q100 qualification but operates at a lower maximum input voltage of 26V and higher dropout voltage of 0.6V at 100mA.

For Higher Current Applications (150mA Output): NCV8664CST50T3G from onsemi and L5150BNTR from STMicroelectronics both provide 150mA output current in SOT-223 packaging. NCV8664CST50T3G supports 45V maximum input voltage with 0.6V dropout at 150mA and includes comprehensive protection features (Over Current, Over Temperature, Reverse Polarity, Short Circuit). L5150BNTR supports 40V maximum input voltage with 0.5V dropout at 150mA. Both include AEC-Q100 automotive qualification.

Not Recommended for Direct Substitution: MC78LC30NTRG is not suitable as a substitute for the LM2936MP-5.0. This part provides 3V fixed output (not 5V), operates at a maximum input voltage of only 12V (versus 40V), and uses SOT-23-5 packaging rather than SOT-223-4. The electrical specifications are fundamentally incompatible with the main part number.

Frequently Asked Questions (FAQ)

Q: Can I use LM2936QMP-5.0/NOPB as a direct replacement for LM2936MP-5.0? A: Yes. Both parts have identical electrical specifications (5V output, 50mA current, 40V input, 0.4V dropout). The difference is packaging: LM2936MP-5.0 uses Cut Tape while LM2936QMP-5.0/NOPB uses Tape & Reel. The QMP variant also includes AEC-Q100 automotive qualification. Select based on your assembly process requirements.

Q: What is the difference between the /NOPB suffix variants? A: The /NOPB suffix indicates lead-free RoHS3 compliant packaging. All LM2936 variants with /NOPB designation meet the same electrical specifications as the main part number. The suffix reflects manufacturing and environmental compliance standards rather than functional differences.

Q: Can I substitute a 100mA regulator for the 50mA LM2936MP-5.0? A: Yes, if your application requires higher current capacity. TLE42644GHTSA3 and NCV2931AST-5T3G both provide 100mA output while maintaining 5V fixed output and SOT-223 packaging. However, verify that your circuit design can accommodate the different quiescent current and dropout voltage specifications of the substitute part.

Q: Why is MC78LC30NTRG listed but not recommended? A: MC78LC30NTRG provides 3V output, not 5V, and operates at a maximum input voltage of 12V instead of 40V. These fundamental differences make it unsuitable for applications designed for the LM2936MP-5.0. It is included in the reference data but should not be selected as a substitute.

Q: What does AEC-Q100 qualification mean? A: AEC-Q100 is an automotive electronics qualification standard. Parts with this qualification have undergone additional testing and reliability validation for automotive applications. If your design requires automotive-grade components, select LM2936QMP-5.0/NOPB, LM2936QMPX-5.0/NOPB, TLE42644GHTSA3, NCV2931AST-5T3G, NCV8664CST50T3G, or L5150BNTR.

Q: How do I choose between Cut Tape and Tape & Reel packaging? A: Cut Tape packaging is suitable for manual assembly or small-volume production. Tape & Reel packaging is designed for automated pick-and-place assembly equipment used in high-volume manufacturing. Select based on your production process and volume requirements.

Q: What is the significance of the Last Time Buy status on the main part number? A: Last Time Buy indicates that the manufacturer will no longer produce the LM2936MP-5.0 after a specified date. Existing inventory may be available, but long-term supply cannot be guaranteed. For new designs or long-term production, select an Active status equivalent such as LM2936MP-5.0/NOPB or LM2936QMP-5.0/NOPB.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All parts listed in this reference are RoHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing and restricted substance limitations.

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