LP38690SDX-2.5 Equivalent & Substitute Parts

Part Overview

The LP38690SDX-2.5 is a linear voltage regulator IC from Texas Instruments, designed for positive fixed 1 output at 1A in a 6-WSON (3x3) surface mount package. This part delivers a fixed 2.5V output with a maximum dropout voltage of 1.3V at 1A and operates across the temperature range of -40°C to 125°C. The device is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity.

Substiute Parts

LP38690SDX-2.5

Texas InstrumentsIn Stock: 985LP38690SDX-2.5 Datasheet

Current PartRFQ

LP38690SD-2.5/NOPB

Texas InstrumentsIn Stock: 3950LP38690SD-2.5/NOPB Datasheet

Parametric EquivalentRFQ

LP38692SD-2.5/NOPB

National SemiconductorIn Stock: 1445LP38692SD-2.5/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP38690SDX-2.5 are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Output voltage: 2.5V fixed
• Output current capability: 1A
• Maximum input voltage: 10V
• Voltage dropout: 1.3V @ 1A
• Quiescent current: 55 µA
• PSRR: 55dB (120Hz)
• Package type: 6-WDFN Exposed Pad (6-WSON 3x3)
• Operating temperature range: -40°C ~ 125°C
• Protection features: Over Temperature

All identified substitutes maintain identical electrical specifications and physical packaging, ensuring direct functional replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

LP38690SD-2.5/NOPB is the primary substitute for the obsolete LP38690SDX-2.5. This part is manufactured by Texas Instruments and maintains active product status, ensuring long-term availability and supply chain continuity. The LP38690SD-2.5/NOPB is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements. Packaging is supplied in Tape & Reel format with 3925 units currently in stock.

LP38692SD-2.5/NOPB is a secondary equivalent manufactured by National Semiconductor. This part matches all critical electrical and mechanical parameters and maintains active product status. The device is supplied in bulk packaging with 1391 units in stock. Selection between the two substitutes should be based on supply chain preference, packaging requirements, and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can LP38690SD-2.5/NOPB directly replace LP38690SDX-2.5 in existing designs?

A: Yes. Both parts share identical electrical specifications, output voltage, current rating, dropout voltage, quiescent current, PSRR, operating temperature range, and 6-WDFN package configuration. No circuit modifications are required.

Q: What is the difference between LP38690SD-2.5/NOPB and LP38692SD-2.5/NOPB?

A: Both parts are parametric equivalents with identical electrical performance and package type. The primary differences are manufacturer (Texas Instruments vs. National Semiconductor) and packaging format (Tape & Reel vs. Bulk). Electrical functionality and pin compatibility are equivalent.

Q: Why is the original LP38690SDX-2.5 listed as obsolete?

A: The LP38690SDX-2.5 has reached end-of-life status. Active equivalents LP38690SD-2.5/NOPB and LP38692SD-2.5/NOPB provide continued design support and production availability.

Q: Are there any compliance differences between the substitutes?

A: LP38690SD-2.5/NOPB is RoHS3 compliant. Both substitutes are REACH unaffected and carry EAR99 ECCN classification. Verify compliance requirements for your specific application.

Q: Can these parts be used interchangeably in production?

A: Yes, provided packaging and supply chain requirements are met. Both substitutes maintain the same 6-WDFN Exposed Pad package and surface mount configuration, allowing direct PCB placement without design changes.