LM9036MX-5.0 Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The LM9036MX-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output applications with 50mA current capacity in an 8-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The LM9036 series provides regulated 5V output with integrated protection features including over-temperature, reverse polarity, and short circuit protection, suitable for low-power applications requiring stable voltage regulation.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Fixed
Voltage - Output (Min/Fixed)	5V
Voltage - Input (Max)	40V
Current - Output	50mA
Voltage Dropout (Max)	0.40V @ 50mA
Current - Quiescent (Iq)	20 µA
PSRR	60dB (120Hz)
Protection Features	Over Temperature, Reverse Polarity, Short Circuit
Operating Temperature	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the LM9036MX-5.0 is determined by strict equivalence across the following critical parameters:

Output voltage: 5V fixed
Output current capacity: 50mA
Input voltage rating: 40V maximum
Voltage dropout: 0.40V @ 50mA
Package type: 8-SOIC surface mount
Protection features: Over temperature, reverse polarity, short circuit
Operating temperature range: -40°C ~ 125°C
Quiescent current: 20 µA
PSRR: 60dB (120Hz)

The LM9036MX-5.0/NOPB and LM9036QMX-5.0/NOPB meet all electrical and mechanical parameters required for direct substitution. The primary distinction between these parts relates to product status, packaging format, and compliance certifications rather than functional performance.

Parameter Comparison

Parameter	LM9036MX-5.0	LM9036MX-5.0/NOPB	LM9036QMX-5.0/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active
Output Voltage	5V	5V	5V
Output Current	50mA	50mA	50mA
Input Voltage (Max)	40V	40V	40V
Voltage Dropout (Max)	0.40V @ 50mA	0.40V @ 50mA	0.40V @ 50mA
Quiescent Current	20 µA	20 µA	20 µA
PSRR	60dB (120Hz)	60dB (120Hz)	60dB (120Hz)
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-SOIC	8-SOIC	8-SOIC
Packaging Format	Bulk	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	Standard	Standard	Automotive
Qualification	-	-	AEC-Q100
Inventory Status	2212 Pcs	10300 Pcs	2679 Pcs

Engineering Selection Recommendations

For new designs and production applications, LM9036MX-5.0/NOPB is the primary substitute for the obsolete LM9036MX-5.0. Both parts share identical electrical specifications and 8-SOIC packaging. The /NOPB variant includes ROHS3 compliance and is available in Tape & Reel packaging format suitable for automated assembly processes.

LM9036QMX-5.0/NOPB serves as an alternative substitute with automotive-grade qualification and AEC-Q100 certification. This variant is appropriate for applications requiring automotive-level reliability and compliance standards. All three parts maintain functional equivalence across voltage regulation, current capacity, dropout voltage, and protection features.

The obsolete status of LM9036MX-5.0 necessitates transition to either active substitute. Selection between LM9036MX-5.0/NOPB and LM9036QMX-5.0/NOPB depends on application requirements: standard industrial applications utilize LM9036MX-5.0/NOPB, while automotive or mission-critical applications utilize LM9036QMX-5.0/NOPB.

Frequently Asked Questions (FAQ)

Q: Can LM9036MX-5.0/NOPB directly replace LM9036MX-5.0 in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent. The /NOPB variant includes ROHS3 compliance and improved availability. Pin configuration, voltage output, current capacity, and package dimensions are identical.

Q: What is the difference between LM9036MX-5.0/NOPB and LM9036QMX-5.0/NOPB?

A: Both parts provide identical voltage regulation performance. LM9036QMX-5.0/NOPB includes automotive-grade qualification and AEC-Q100 certification, making it suitable for automotive applications. LM9036MX-5.0/NOPB is specified for standard industrial applications.

Q: Are there packaging differences between the substitute parts?

A: LM9036MX-5.0 was supplied in bulk packaging. Both active substitutes (LM9036MX-5.0/NOPB and LM9036QMX-5.0/NOPB) are supplied in Tape & Reel format, standard for automated assembly processes.

Q: Does the /NOPB designation affect electrical performance?

A: No. The /NOPB designation indicates lead-free and halogen-free compliance. Electrical specifications remain unchanged.

Q: Which substitute should be selected for new production?

A: LM9036MX-5.0/NOPB is recommended for standard applications due to active product status and higher inventory availability. LM9036QMX-5.0/NOPB is selected when automotive qualification and AEC-Q100 certification are required.

Q: Is the 8-SOIC package compatible with existing PCB layouts?

A: Yes. All three parts use identical 8-SOIC packaging (0.154" width, 3.90mm). PCB footprints and layouts require no modification.

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