LP38693SD-2.5 Equivalent & Substitute Parts

Part Overview

The LP38693SD-2.5 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 2.5V output at 500mA in a 6-WSON (3x3) surface mount package. This automotive-grade component features integrated over-temperature protection and enable control functionality. The main part number LP38693SD-2.5 carries an obsolete product status, making identification of active equivalent alternatives essential for ongoing production and design continuity.

Substiute Parts

LP38693SD-2.5

Texas InstrumentsIn Stock: 1991LP38693SD-2.5 Datasheet

Current PartRFQ

LP38693QSD-2.5/NOPB

Texas InstrumentsIn Stock: 10193LP38693QSD-2.5/NOPB Datasheet

Parametric EquivalentRFQ

LP38693QSDX-2.5/NOPB

Texas InstrumentsIn Stock: 2157LP38693QSDX-2.5/NOPB Datasheet

Parametric EquivalentRFQ

LP38693SD-2.5/NOPB

Texas InstrumentsIn Stock: 1089LP38693SD-2.5/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP38693SD-2.5 is determined by strict equivalence across the following parameters: output voltage (2.5V fixed), output current (500mA), input voltage maximum (10V), voltage dropout specification (0.73V @ 500mA), quiescent current (55 µA), PSRR (55dB at 120Hz), package type (6-WSON 3x3), automotive qualification (AEC-Q100), and operating temperature range (-40°C to 125°C). All identified substitutes maintain identical electrical performance and mechanical compatibility. Packaging format (Tape & Reel versus bulk) and RoHS compliance status represent the primary differentiators among equivalent parts.

Parameter Comparison

Engineering Selection Recommendations

All three substitute part numbers—LP38693QSD-2.5/NOPB, LP38693QSDX-2.5/NOPB, and LP38693SD-2.5/NOPB—provide direct parametric equivalence to the obsolete LP38693SD-2.5. The primary selection criteria are product status and regulatory compliance. LP38693QSD-2.5/NOPB, LP38693QSDX-2.5/NOPB, and LP38693SD-2.5/NOPB all carry active product status and ROHS3 compliance, making them suitable for new designs and ongoing production requiring current component availability. The choice between these three active alternatives depends on packaging requirements (Tape & Reel format) and inventory availability. All maintain AEC-Q100 automotive qualification and identical electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can LP38693QSD-2.5/NOPB directly replace LP38693SD-2.5? A: Yes. Both parts are parametrically equivalent across all electrical specifications, output voltage, current rating, dropout voltage, and package type. The primary difference is product status (active versus obsolete) and RoHS compliance level.

Q: What is the difference between LP38693QSD-2.5/NOPB and LP38693QSDX-2.5/NOPB? A: Both are parametrically identical in electrical performance and package configuration. The difference lies in the HTSUS code classification (8542.39.0001 versus 8542.39.0060), which reflects tariff and trade classification distinctions. Electrical and mechanical compatibility is identical.

Q: Does packaging format (Tape & Reel versus bulk) affect electrical performance? A: No. Tape & Reel packaging is a delivery and handling format only. It does not alter the electrical characteristics, performance, or reliability of the LP38693 linear regulator IC.

Q: Are all substitutes AEC-Q100 qualified? A: Yes. LP38693QSD-2.5/NOPB, LP38693QSDX-2.5/NOPB, and LP38693SD-2.5/NOPB all maintain AEC-Q100 automotive qualification, matching the original part's certification level.

Q: Why is the original LP38693SD-2.5 marked as obsolete? A: The original part carries obsolete status, indicating it is no longer in active production. The active equivalents (QSD and QSDX variants) represent the current manufacturing alternatives from Texas Instruments.