LP38852S-ADJ Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP38852S-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 compact TO-263 (DDPAK-7) surface mount package. The regulator features adjustable output voltage ranging from 0.8V to 1.8V with integrated protection mechanisms including over-current, over-temperature, short-circuit, and under-voltage lockout (UVLO) protection.

The LP38852S-ADJ is classified as obsolete, making identification of equivalent substitute parts essential for ongoing production, maintenance, and design continuity. Active alternatives with identical electrical and mechanical specifications ensure seamless integration into existing designs without circuit modification.

Substiute Parts

LP38852S-ADJ

Texas InstrumentsIn Stock: 1128LP38852S-ADJ Datasheet

Current PartRFQ

LP38852S-ADJ/NOPB

Texas InstrumentsIn Stock: 1091LP38852S-ADJ/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP38852S-ADJ are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

Primary Matching Parameters:

• Output Configuration: Positive
• Output Type: Adjustable
• Voltage - Input (Max): 5.5V
• Voltage - Output (Min/Fixed): 0.8V
• Voltage - Output (Max): 1.8V
• Current - Output: 1.5A
• Voltage Dropout (Max): 0.18V @ 1.5A
• Package / Case: TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
• Supplier Device Package: TO-263 (DDPAK-7)

Secondary Matching Parameters:

• Control Features: Enable, Soft Start
• Protection Features: Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount

All substitute parts must maintain identical electrical performance characteristics and physical package dimensions to ensure direct replacement capability without circuit redesign or PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

The LP38852S-ADJ/NOPB is the direct active substitute for the obsolete LP38852S-ADJ. Both parts are manufactured by Texas Instruments and share identical electrical specifications and physical packaging.

The primary distinction between these parts is product status and regulatory compliance. The LP38852S-ADJ/NOPB carries Active product status, ensuring ongoing availability and manufacturer support. Additionally, the LP38852S-ADJ/NOPB meets ROHS3 compliance requirements, whereas the original LP38852S-ADJ is RoHS non-compliant.

For new designs, production continuity, and applications requiring RoHS compliance, the LP38852S-ADJ/NOPB is the appropriate selection. Both parts maintain identical electrical performance, thermal characteristics, and mechanical compatibility, enabling direct substitution without circuit modification or PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can LP38852S-ADJ/NOPB replace LP38852S-ADJ in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The LP38852S-ADJ/NOPB is the active equivalent with identical output voltage range (0.8V to 1.8V), output current (1.5A), dropout voltage (0.18V @ 1.5A), and protection features. Direct substitution is possible without circuit modification.

Q: What is the difference between LP38852S-ADJ and LP38852S-ADJ/NOPB?

A: The primary differences are product status and RoHS compliance. LP38852S-ADJ is classified as Obsolete and RoHS non-compliant. LP38852S-ADJ/NOPB is Active and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Are the packages identical between these parts?

A: Yes. Both parts use the TO-263 (DDPAK-7) package with 7 leads plus tab. PCB footprints and mounting requirements are identical.

Q: What is the MSL rating for these regulators?

A: Both LP38852S-ADJ and LP38852S-ADJ/NOPB have Moisture Sensitivity Level (MSL) 3 with a floor life of 168 hours. Standard moisture control procedures apply during storage and handling.

Q: Are there any compliance differences between these parts?

A: LP38852S-ADJ/NOPB meets ROHS3 compliance, while LP38852S-ADJ does not. Both parts are REACH Unaffected. For applications requiring RoHS compliance, LP38852S-ADJ/NOPB is the appropriate selection.

Q: What control and protection features are included?

A: Both parts include Enable and Soft Start control features. Protection mechanisms include Over Current, Over Temperature, Short Circuit, and Under Voltage Lockout (UVLO) protection.