LP38692MPX-ADJ Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP38692MPX-ADJ is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This Surface Mount device delivers 1A output current in a compact SOT-223-5 package and operates across an input voltage range up to 10V with adjustable output from 1.25V to 9V. The main part is currently listed as Obsolete, making equivalent active alternatives necessary for ongoing production and design requirements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable
Number of Regulators	1
Voltage - Input (Max)	10V
Voltage - Output (Min/Fixed)	1.25V
Voltage - Output (Max)	9V
Current - Output	1A
Current - Quiescent (Iq)	55 µA
Current - Supply (Max)	100 µA
PSRR	55dB (120Hz)
Protection Features	Over Temperature
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-261-5, TO-261AB
Supplier Device Package	SOT-223-5
Base Product Number	LP38692

Substitute Part Grouping Explanation

Substitute parts for the LP38692MPX-ADJ are identified based on strict electrical and mechanical parameter matching within the LP38692 product family. The substitution criteria are:

Identical output configuration (Positive)
Identical output type (Adjustable)
Identical voltage specifications (Input Max: 10V, Output Min: 1.25V, Output Max: 9V)
Identical current ratings (Output: 1A, Iq: 55 µA, Supply Max: 100 µA)
Identical PSRR performance (55dB at 120Hz)
Identical protection features (Over Temperature)
Identical operating temperature range (-40°C ~ 125°C)
Identical package type (SOT-223-5)
Same base product number (LP38692)

The LP38692MP-ADJ/NOPB and LP38692MPX-ADJ/NOPB variants meet all these criteria and are direct parametric equivalents. The primary distinction is product status and compliance certification.

Parameter Comparison

Parameter	LP38692MPX-ADJ	LP38692MP-ADJ/NOPB	LP38692MPX-ADJ/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active
Output Configuration	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable
Voltage - Input (Max)	10V	10V	10V
Voltage - Output (Min/Fixed)	1.25V	1.25V	1.25V
Voltage - Output (Max)	9V	9V	9V
Current - Output	1A	1A	1A
Current - Quiescent (Iq)	55 µA	55 µA	55 µA
Current - Supply (Max)	100 µA	100 µA	100 µA
PSRR	55dB (120Hz)	55dB (120Hz)	55dB (120Hz)
Protection Features	Over Temperature	Over Temperature	Over Temperature
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-261-5, TO-261AB	TO-261-5, TO-261AB	TO-261-5, TO-261AB
Supplier Device Package	SOT-223-5	SOT-223-5	SOT-223-5
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both LP38692MP-ADJ/NOPB and LP38692MPX-ADJ/NOPB are direct parametric equivalents to the obsolete LP38692MPX-ADJ. Selection between these active alternatives should be based on the following factors:

Product Status: The LP38692MPX-ADJ is Obsolete. Both substitute parts are Active, ensuring long-term availability and supply chain continuity.

Compliance Certification: The original LP38692MPX-ADJ is RoHS non-compliant. Both substitute parts are ROHS3 Compliant, meeting current environmental and regulatory requirements for new designs and production.

Packaging and Availability: LP38692MP-ADJ/NOPB is available in Cut Tape (CT) and Digi-Reel packaging with 25,400 units in stock. LP38692MPX-ADJ/NOPB is available in Cut Tape (CT) and Digi-Reel packaging with 16,856 units in stock. Both support Tape & Reel (TR) packaging for automated assembly.

Electrical Performance: All three variants deliver identical electrical performance across all specified parameters, ensuring direct functional interchangeability in circuit applications.

For new designs and production requiring RoHS compliance and active product status, either LP38692MP-ADJ/NOPB or LP38692MPX-ADJ/NOPB is suitable. Selection may be based on packaging preference, inventory availability, or supply chain logistics.

Frequently Asked Questions (FAQ)

Q: Can LP38692MP-ADJ/NOPB or LP38692MPX-ADJ/NOPB be used as direct replacements for the obsolete LP38692MPX-ADJ?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, output configuration, voltage ratings, current ratings, and package type (SOT-223-5). They are direct functional replacements suitable for circuit-level substitution.

Q: What is the difference between LP38692MP-ADJ/NOPB and LP38692MPX-ADJ/NOPB?

A: Both parts are parametric equivalents with identical electrical performance and compliance certifications. The primary differences are packaging format and inventory availability. LP38692MP-ADJ/NOPB has higher stock levels (25,400 units), while LP38692MPX-ADJ/NOPB has 16,856 units available.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both LP38692MP-ADJ/NOPB and LP38692MPX-ADJ/NOPB are ROHS3 Compliant, whereas the original LP38692MPX-ADJ is RoHS non-compliant. This makes the substitutes suitable for applications requiring RoHS compliance.

Q: What is the package type for these regulators?

A: All three variants use the SOT-223-5 package, also designated as TO-261-5 or TO-261AB. This is a Surface Mount package suitable for automated assembly processes.

Q: Are there any electrical performance differences between the three parts?

A: No. All three variants deliver identical electrical performance: 1A output current, 1.25V to 9V adjustable output range, 10V maximum input voltage, 55 µA quiescent current, 55dB PSRR at 120Hz, and Over Temperature protection across the -40°C to 125°C operating range.

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

A: Both LP38692MP-ADJ/NOPB and LP38692MPX-ADJ/NOPB are available in Cut Tape (CT) and Digi-Reel packaging, with Tape & Reel (TR) support for high-volume automated assembly applications.

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