LP38852T-ADJ Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP38852T-ADJ is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This device delivers 1.5A output current in a TO-220-7 package and is classified as obsolete. The LP38852T-ADJ features adjustable output voltage regulation with integrated protection mechanisms including over-current, over-temperature, and short-circuit protection. Due to its obsolete status, identifying functionally equivalent active alternatives is essential for design continuity and procurement planning.

Substiute Parts

LP38852T-ADJ

Texas InstrumentsIn Stock: 1165LP38852T-ADJ Datasheet

Current PartRFQ

LP38852T-ADJ/NOPB

Texas InstrumentsIn Stock: 1266LP38852T-ADJ/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP38852T-ADJ is determined by electrical and mechanical parameter equivalence across the following critical criteria:

Electrical Equivalence Parameters:

• Output configuration (Positive)
• Output type (Adjustable)
• Number of regulators (1)
• Maximum input voltage (5.5V)
• Output voltage range (0.8V to 1.8V)
• Output current capability (1.5A)
• Dropout voltage performance (0.18V @ 1.5A)
• Control features (Enable, Soft Start)
• Protection features (Over Current, Over Temperature, Short Circuit, UVLO)
• Operating temperature range (-40°C to 125°C)

Mechanical Equivalence Parameters:

• Package type (TO-220-7 Formed Leads)
• Mounting type (Through Hole)

The LP38852T-ADJ/NOPB variant maintains identical electrical specifications and mechanical packaging while offering active product status and improved compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The LP38852T-ADJ/NOPB is the direct substitute for the obsolete LP38852T-ADJ. Both parts share identical electrical performance specifications and mechanical packaging. The primary distinction is product status: LP38852T-ADJ/NOPB maintains active availability from Texas Instruments, ensuring continued supply chain access and manufacturing support.

The LP38852T-ADJ/NOPB offers improved compliance posture with ROHS3 certification, whereas the original LP38852T-ADJ is RoHS non-compliant. For new designs or procurement requiring regulatory compliance, the LP38852T-ADJ/NOPB is the appropriate selection. Both parts maintain equivalent REACH and ECCN classifications.

Frequently Asked Questions (FAQ)

Q: Can LP38852T-ADJ/NOPB directly replace LP38852T-ADJ in existing designs?

A: Yes. The LP38852T-ADJ/NOPB provides identical electrical specifications, output voltage range, current delivery, protection features, and TO-220-7 package configuration. No circuit modifications are required for direct substitution.

Q: What is the difference between LP38852T-ADJ and LP38852T-ADJ/NOPB?

A: The primary differences are product status and compliance. LP38852T-ADJ is obsolete with RoHS non-compliant status. LP38852T-ADJ/NOPB is active with ROHS3 compliance and supplied in Tube packaging. Electrical and mechanical specifications are identical.

Q: Why is the original LP38852T-ADJ marked as obsolete?

A: Obsolete status indicates Texas Instruments has discontinued active manufacturing and support for this specific part number variant. The LP38852T-ADJ/NOPB variant remains in active production.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts maintain identical thermal operating range (-40°C to 125°C), dropout voltage performance (0.18V @ 1.5A), quiescent current (300 µA), and PSRR characteristics (80dB ~ 65dB across 120Hz ~ 1kHz).

Q: What does the "/NOPB" suffix indicate?

A: The "/NOPB" suffix designates "No Plumbum" (lead-free) packaging, indicating compliance with RoHS directives and lead-free manufacturing processes.

Q: Is the TO-220-7 package compatible with existing PCB layouts?

A: Yes. Both LP38852T-ADJ and LP38852T-ADJ/NOPB use identical TO-220-7 Formed Leads packaging with through-hole mounting. PCB footprints and thermal management designs require no modification.