LP38692MP-ADJ Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP38692MP-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 number LP38692MP-ADJ is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

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
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LP38692MP-ADJ are identified based on strict electrical and mechanical parameter matching within the LP38692 product family. All substitute candidates maintain identical specifications across the following critical parameters:

Output configuration (Positive)
Output type (Adjustable)
Voltage ranges (Input Max: 10V, Output Min: 1.25V, Output Max: 9V)
Current rating (1A output)
Quiescent current (55 µA)
PSRR performance (55dB at 120Hz)
Protection features (Over Temperature)
Operating temperature range (-40°C ~ 125°C)
Package type (SOT-223-5)
Mounting type (Surface Mount)

Substitutes are differentiated by product status (Active vs. Obsolete), RoHS compliance level, and packaging configuration (Cut Tape & Digi-Reel vs. standard packaging).

Parameter Comparison

Parameter	LP38692MP-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
Packaging Configuration	Standard	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Both LP38692MP-ADJ/NOPB and LP38692MPX-ADJ/NOPB are direct substitutes for the obsolete LP38692MP-ADJ, with all electrical and mechanical parameters held constant. The primary differentiators are product status and regulatory compliance.

LP38692MP-ADJ/NOPB is the preferred substitute for new designs and ongoing procurement. This part carries Active product status from Texas Instruments and meets ROHS3 compliance requirements, making it suitable for applications subject to RoHS directives. The /NOPB suffix indicates lead-free plating, aligning with modern manufacturing standards.

LP38692MPX-ADJ/NOPB serves as an alternative substitute with identical electrical specifications and ROHS3 compliance. Both substitute parts are available in Cut Tape and Digi-Reel packaging configurations, supporting both manual and automated assembly workflows.

The original LP38692MP-ADJ, while electrically equivalent, carries Obsolete status and RoHS non-compliant designation. New designs should transition to either substitute part number to ensure long-term supply chain stability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can LP38692MP-ADJ/NOPB directly replace LP38692MP-ADJ in existing designs?

A: Yes. Both parts maintain identical electrical specifications across all critical parameters including output voltage range (1.25V to 9V), output current (1A), quiescent current (55 µA), PSRR (55dB at 120Hz), operating temperature range (-40°C to 125°C), and package type (SOT-223-5). The primary difference is product status and RoHS compliance level.

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

A: Both parts are parametrically equivalent with identical electrical and mechanical specifications. The difference lies in the product designation suffix (MP vs. MPX). Both carry Active product status and ROHS3 compliance. Selection between these two can be based on availability, packaging preference (Cut Tape & Digi-Reel), or supplier inventory.

Q: Why is the original LP38692MP-ADJ listed as Obsolete?

A: The original part number LP38692MP-ADJ has been superseded by newer variants with improved compliance certifications. Texas Instruments has transitioned the product line to ROHS3-compliant versions (LP38692MP-ADJ/NOPB and LP38692MPX-ADJ/NOPB) to meet current regulatory requirements.

Q: Are there any package or pinout differences between these substitute parts?

A: No. All three part numbers use the identical SOT-223-5 package with TO-261-5 and TO-261AB case designations. Pinout and mechanical dimensions are identical, ensuring direct PCB compatibility without layout modifications.

Q: What does the /NOPB suffix indicate?

A: The /NOPB suffix designates lead-free plating on the component leads, complying with RoHS directives that restrict the use of lead in electronic components. This is standard for modern manufacturing and regulatory compliance.

Q: Can I use LP38692MP-ADJ/NOPB in applications requiring RoHS compliance?

A: Yes. LP38692MP-ADJ/NOPB carries ROHS3 Compliant status and is suitable for applications subject to RoHS directives. The original LP38692MP-ADJ is RoHS non-compliant and should not be used in RoHS-regulated applications.

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 configurations, supporting both manual pick-and-place assembly and automated reel-fed production workflows.

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