LP38692MPX-3.3 Equivalent & Substitute Parts

Part Overview

The LP38692MPX-3.3 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output at 1A current capacity in a SOT-223-5 surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The part operates across an industrial temperature range of -40°C to 125°C and includes over-temperature protection features suitable for general-purpose power management applications.

Substiute Parts

LP38692MPX-3.3

Texas InstrumentsIn Stock: 1422LP38692MPX-3.3 Datasheet

Current PartRFQ

LP38692MP-3.3/NOPB

Texas InstrumentsIn Stock: 18547LP38692MP-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP38692MPX-3.3/NOPB

Texas InstrumentsIn Stock: 17124LP38692MPX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP38692MPX-3.3 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Output voltage: 3.3V fixed
• Output current capacity: 1A
• Maximum input voltage: 10V
• Voltage dropout: 1V @ 1A
• Quiescent current: 55 µA
• PSRR: 55dB (120Hz)
• Protection features: Over Temperature

Mechanical Parameters (Must Match):

• Package type: SOT-223-5
• Mounting type: Surface Mount
• Case designation: TO-261-5, TO-261AB

Compliance Parameters:

• Manufacturer: Texas Instruments
• Base product number: LP38692

The identified substitute parts maintain identical electrical and mechanical specifications, ensuring direct functional replacement without circuit redesign or board layout modification.

Parameter Comparison

Engineering Selection Recommendations

LP38692MP-3.3/NOPB and LP38692MPX-3.3/NOPB are direct parametric equivalents to the obsolete LP38692MPX-3.3. Both substitute parts are classified as active products with current manufacturing status, ensuring long-term availability and supply chain continuity.

The primary distinction between the main part and its substitutes is regulatory compliance status. Both substitute parts achieve RoHS3 compliance, whereas the original LP38692MPX-3.3 is RoHS non-compliant. This compliance improvement aligns with current environmental and regulatory requirements for electronic components in most markets.

Packaging configuration differs between the main part (Tape & Reel) and the substitutes (Cut Tape & Digi-Reel), but this distinction affects only procurement and handling logistics, not electrical or mechanical performance. All three parts share identical SOT-223-5 package geometry and surface mount characteristics.

Selection between LP38692MP-3.3/NOPB and LP38692MPX-3.3/NOPB should be based on packaging preference and inventory availability, as electrical specifications are identical.

Frequently Asked Questions (FAQ)

Q: Can LP38692MP-3.3/NOPB or LP38692MPX-3.3/NOPB be used as direct replacements for the obsolete LP38692MPX-3.3?

A: Yes. Both substitute parts maintain identical electrical specifications including output voltage (3.3V), output current (1A), input voltage rating (10V max), voltage dropout (1V @ 1A), quiescent current (55 µA), and PSRR (55dB at 120Hz). The SOT-223-5 package geometry and surface mount configuration are identical, enabling direct board-level substitution without circuit modification.

Q: What is the difference between LP38692MP-3.3/NOPB and LP38692MPX-3.3/NOPB?

A: Both parts are parametrically equivalent with identical electrical and mechanical specifications. The primary difference is packaging format: LP38692MP-3.3/NOPB is supplied in Cut Tape & Digi-Reel format, while LP38692MPX-3.3/NOPB is also supplied in Cut Tape & Digi-Reel format. Selection between these variants should be based on procurement requirements and inventory management preferences.

Q: Why is the original LP38692MPX-3.3 classified as obsolete?

A: The original part is marked obsolete by Texas Instruments. The active substitute parts LP38692MP-3.3/NOPB and LP38692MPX-3.3/NOPB provide equivalent functionality with improved RoHS3 compliance status, making them the recommended alternatives for new designs and production continuity.

Q: Are there any compliance differences between the main part and substitute parts?

A: Yes. The original LP38692MPX-3.3 is RoHS non-compliant, while both substitute parts (LP38692MP-3.3/NOPB and LP38692MPX-3.3/NOPB) are RoHS3 compliant. Both substitutes maintain REACH Unaffected status and EAR99 export classification identical to the original part. This compliance improvement is beneficial for applications subject to environmental regulations.

Q: Will the substitute parts function identically in existing circuit designs?

A: Yes. The substitute parts maintain all critical electrical parameters: fixed 3.3V output, 1A output current capacity, 1V maximum dropout at 1A, 55 µA quiescent current, and 55dB PSRR at 120Hz. Operating temperature range (-40°C to 125°C) and over-temperature protection features are identical. No circuit redesign or component value changes are required.

Q: What is the moisture sensitivity level for these parts?

A: All three parts (main and substitutes) have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements.